diff --git a/erpnext/accounts/doctype/account/chart_of_accounts/verified/ae_uae_chart_template_standard.json b/erpnext/accounts/doctype/account/chart_of_accounts/verified/ae_uae_chart_template_standard.json
index cae4c3c..8856c8c 100644
--- a/erpnext/accounts/doctype/account/chart_of_accounts/verified/ae_uae_chart_template_standard.json
+++ b/erpnext/accounts/doctype/account/chart_of_accounts/verified/ae_uae_chart_template_standard.json
@@ -12,7 +12,7 @@
                         "Accrued Rebates Due from Suppliers": {
                             "account_type": "Receivable"
                         }, 
-                        "Accured Income from Suppliers": {
+                        "Accrued Income from Suppliers": {
                             "account_type": "Receivable"
                         }, 
                         "Other Debtors": {
@@ -54,7 +54,7 @@
                             }
                         }, 
                         "Petty Cash": {
-                            "Petty Cash - Admininistration": {
+                            "Petty Cash - Administration": {
                                 "account_type": "Cash"
                             }, 
                             "Petty Cash - Others": {
@@ -85,13 +85,13 @@
                         "Handling Difference in Inventory": {
                             "account_type": "Stock Adjustment"
                         }, 
-                        "Items Delivered to Customs on temprary Base": {}
+                        "Items Delivered to Customs on temporary Base": {}
                     }, 
                     "Stock in Hand": {
                         "account_type": "Stock"
                     }
                 }, 
-                "Perliminary and Preoperating Expenses": {
+                "Preliminary and Preoperating Expenses": {
                     "Preoperating Expenses": {}
                 }, 
                 "Prepayments & Deposits": {
@@ -150,16 +150,16 @@
                             "account_type": "Fixed Asset"
                         }, 
                         "Leasehold Improvement": {}, 
-                        "Motor Vehicules": {
+                        "Motor Vehicles": {
                             "account_type": "Fixed Asset"
                         }, 
-                        "Work In Progrees": {}, 
+                        "Work In Progress": {}, 
                         "account_type": "Fixed Asset"
                     }
                 }, 
                 "Intangible Assets": {
                     "Computer Card Renewal": {}, 
-                    "Dispoal of Outlets": {}, 
+                    "Disposal of Outlets": {}, 
                     "Registration of Trademarks": {}
                 }, 
                 "Intercompany Accounts": {}, 
@@ -218,7 +218,7 @@
             }, 
             "MISC Charges": {
                 "Other Charges": {
-                    "Captial Loss": {
+                    "Capital Loss": {
                         "Disposal of Business Branch": {}, 
                         "Loss On Fixed Assets Disposal": {}, 
                         "Loss on Difference on Exchange": {}
@@ -253,14 +253,14 @@
                         "Other Bank Charges": {}
                     }, 
                     "Communications": {
-                        "Courrier": {}, 
+                        "Courier": {}, 
                         "Others - Communication": {}, 
                         "Telephone": {}, 
                         "Web Site Hosting Fees": {}
                     }, 
                     "Office & Various Expenses": {
                         "Cleaning": {}, 
-                        "Convoyance Expenses": {}, 
+                        "Conveyance Expenses": {}, 
                         "Gifts & Donations": {}, 
                         "Insurance": {}, 
                         "Kitchen and Buffet Expenses": {}, 
@@ -325,7 +325,7 @@
             "Current Liabilities": {
                 "Accounts Payable": {
                     "Payables": {
-                        "Advance Paybale to Suppliers": {
+                        "Advance Payable to Suppliers": {
                             "account_type": "Payable"
                         }, 
                         "Consigned Payable": {
diff --git a/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py b/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py
index 13ed5b6..9aa2ee2 100644
--- a/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py
+++ b/erpnext/accounts/doctype/bank_guarantee/bank_guarantee.py
@@ -22,7 +22,5 @@
 
 @frappe.whitelist()
 def get_vouchar_detials(column_list, doctype, docname):
-	print (column_list, doctype, docname)
 	return frappe.db.sql(''' select {columns} from `tab{doctype}` where name=%s'''
 		.format(columns=", ".join(json.loads(column_list)), doctype=doctype), docname, as_dict=1)[0]
-
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 95d49a4..97ad0ea 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -100,6 +100,7 @@
 		self.validate_fixed_asset()
 		self.create_remarks()
 		self.set_status()
+		self.validate_purchase_receipt_if_update_stock()
 		validate_inter_company_party(self.doctype, self.supplier, self.company, self.inter_company_invoice_reference)
 
 	def validate_release_date(self):
@@ -284,7 +285,7 @@
 
 	def update_status_updater_args(self):
 		if cint(self.update_stock):
-			self.status_updater.extend([{
+			self.status_updater.append({
 				'source_dt': 'Purchase Invoice Item',
 				'target_dt': 'Purchase Order Item',
 				'join_field': 'po_detail',
@@ -292,28 +293,29 @@
 				'target_parent_dt': 'Purchase Order',
 				'target_parent_field': 'per_received',
 				'target_ref_field': 'qty',
-				'source_field': 'qty',
+				'source_field': 'received_qty',
+				'second_source_dt': 'Purchase Receipt Item',
+				'second_source_field': 'received_qty',
+				'second_join_field': 'purchase_order_item',
 				'percent_join_field':'purchase_order',
-				# 'percent_join_field': 'prevdoc_docname',
 				'overflow_type': 'receipt',
 				'extra_cond': """ and exists(select name from `tabPurchase Invoice`
 					where name=`tabPurchase Invoice Item`.parent and update_stock = 1)"""
-			},
-			{
-				'source_dt': 'Purchase Invoice Item',
-				'target_dt': 'Purchase Order Item',
-				'join_field': 'po_detail',
-				'target_field': 'returned_qty',
-				'target_parent_dt': 'Purchase Order',
-				# 'target_parent_field': 'per_received',
-				# 'target_ref_field': 'qty',
-				'source_field': '-1 * qty',
-				# 'percent_join_field': 'prevdoc_docname',
-				# 'overflow_type': 'receipt',
-				'extra_cond': """ and exists (select name from `tabPurchase Invoice`
-					where name=`tabPurchase Invoice Item`.parent and update_stock=1 and is_return=1)"""
-			}
-		])
+			})
+			if cint(self.is_return):
+				self.status_updater.append({
+					'source_dt': 'Purchase Invoice Item',
+					'target_dt': 'Purchase Order Item',
+					'join_field': 'po_detail',
+					'target_field': 'returned_qty',
+					'source_field': '-1 * qty',
+					'second_source_dt': 'Purchase Receipt Item',
+					'second_source_field': '-1 * qty',
+					'second_join_field': 'purchase_order_item',
+					'overflow_type': 'receipt',
+					'extra_cond': """ and exists (select name from `tabPurchase Invoice`
+						where name=`tabPurchase Invoice Item`.parent and update_stock=1 and is_return=1)"""
+				})
 
 	def validate_purchase_receipt_if_update_stock(self):
 		if self.update_stock:
@@ -327,13 +329,13 @@
 
 		self.check_prev_docstatus()
 		self.update_status_updater_args()
+		self.update_prevdoc_status()
 
 		frappe.get_doc('Authorization Control').validate_approving_authority(self.doctype,
 			self.company, self.base_grand_total)
 
 		if not self.is_return:
 			self.update_against_document_in_jv()
-			self.update_prevdoc_status()
 			self.update_billing_status_for_zero_amount_refdoc("Purchase Order")
 			self.update_billing_status_in_pr()
 
@@ -763,9 +765,9 @@
 		self.check_on_hold_or_closed_status()
 
 		self.update_status_updater_args()
+		self.update_prevdoc_status()
 
 		if not self.is_return:
-			self.update_prevdoc_status()
 			self.update_billing_status_for_zero_amount_refdoc("Purchase Order")
 			self.update_billing_status_in_pr()
 
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 31a9c66..dd5f8fd 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -254,7 +254,7 @@
 
 	def update_status_updater_args(self):
 		if cint(self.update_stock):
-			self.status_updater.extend([{
+			self.status_updater.append({
 				'source_dt':'Sales Invoice Item',
 				'target_dt':'Sales Order Item',
 				'target_parent_dt':'Sales Order',
@@ -272,21 +272,20 @@
 				'overflow_type': 'delivery',
 				'extra_cond': """ and exists(select name from `tabSales Invoice`
 					where name=`tabSales Invoice Item`.parent and update_stock = 1)"""
-			},
-			{
-				'source_dt': 'Sales Invoice Item',
-				'target_dt': 'Sales Order Item',
-				'join_field': 'so_detail',
-				'target_field': 'returned_qty',
-				'target_parent_dt': 'Sales Order',
-				# 'target_parent_field': 'per_delivered',
-				# 'target_ref_field': 'qty',
-				'source_field': '-1 * qty',
-				# 'percent_join_field': 'sales_order',
-				# 'overflow_type': 'delivery',
-				'extra_cond': """ and exists (select name from `tabSales Invoice` where name=`tabSales Invoice Item`.parent and update_stock=1 and is_return=1)"""
-			}
-		])
+			})
+			if cint(self.is_return):
+				self.status_updater.append({
+					'source_dt': 'Sales Invoice Item',
+					'target_dt': 'Sales Order Item',
+					'join_field': 'so_detail',
+					'target_field': 'returned_qty',
+					'target_parent_dt': 'Sales Order',
+					'source_field': '-1 * qty',
+					'second_source_dt': 'Delivery Note Item',
+					'second_source_field': '-1 * qty',
+					'second_join_field': 'so_detail',
+					'extra_cond': """ and exists (select name from `tabSales Invoice` where name=`tabSales Invoice Item`.parent and update_stock=1 and is_return=1)"""
+				})
 
 	def check_credit_limit(self):
 		from erpnext.selling.doctype.customer.customer import check_credit_limit
@@ -506,8 +505,8 @@
 		for i in dic:
 			if frappe.db.get_single_value('Selling Settings', dic[i][0]) == 'Yes':
 				for d in self.get('items'):
-					if frappe.get_cached_value('Item', d.item_code, 'is_stock_item') == 1 \
-						and not d.get(i.lower().replace(' ','_')) and not self.get(dic[i][1]):
+					if (d.item_code and frappe.get_cached_value('Item', d.item_code, 'is_stock_item') == 1
+						and not d.get(i.lower().replace(' ','_')) and not self.get(dic[i][1])):
 						msgprint(_("{0} is mandatory for Item {1}").format(i,d.item_code), raise_exception=1)
 
 
diff --git a/erpnext/accounts/report/accounts_receivable/accounts_receivable.html b/erpnext/accounts/report/accounts_receivable/accounts_receivable.html
index 1bff93c..d7aa0c0 100644
--- a/erpnext/accounts/report/accounts_receivable/accounts_receivable.html
+++ b/erpnext/accounts/report/accounts_receivable/accounts_receivable.html
@@ -111,10 +111,10 @@
 				<th style="width: 4%">{%= __("Age (Days)") %}</th>
 
 				{% if(report.report_name === "Accounts Receivable" && filters.show_sales_person_in_print) { %}
-					<th style="width: 16%">{%= __("Reference") %}</th>
+					<th style="width: 14%">{%= __("Reference") %}</th>
 					<th style="width: 10%">{%= __("Sales Person") %}</th>
 				{% } else { %}
-					<th style="width: 26%">{%= __("Reference") %}</th>
+					<th style="width: 24%">{%= __("Reference") %}</th>
 				{% } %}
 				{% if(!filters.show_pdc_in_print) { %}
 					<th style="width: 20%">{%= (filters.customer || filters.supplier) ? __("Remarks"): __("Party") %}</th>
@@ -127,7 +127,7 @@
 				<th style="width: 10%; text-align: right">{%= __("Outstanding Amount") %}</th>
 				{% if(filters.show_pdc_in_print) { %}
 					{% if(report.report_name === "Accounts Receivable") { %}
-						<th style="width: 10%">{%= __("Customer LPO No.") %}</th>
+						<th style="width: 12%">{%= __("Customer LPO No.") %}</th>
 					{% } %}
 					<th style="width: 10%">{%= __("PDC/LC Ref") %}</th>
 					<th style="width: 10%">{%= __("PDC/LC Amount") %}</th>
diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index 812aad8..820c93c 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -108,6 +108,69 @@
 		self.assertEqual(po.get("items")[0].amount, 1400)
 		self.assertEqual(get_ordered_qty(), existing_ordered_qty + 3)
 
+	def test_update_qty(self):
+		po = create_purchase_order()
+
+		make_pr_against_po(po.name, 6)
+
+		po.load_from_db()
+		self.assertEqual(po.get("items")[0].received_qty, 6)
+
+		# Check received_qty after make_purchase_invoice without update_stock checked
+		pi1 = make_purchase_invoice(po.name)
+		pi1.get("items")[0].qty = 6
+		pi1.insert()
+		pi1.submit()
+
+		po.load_from_db()
+		self.assertEqual(po.get("items")[0].received_qty, 6)
+
+		# Check received_qty after make_purchase_invoice with update_stock checked
+		pi2 = make_purchase_invoice(po.name)
+		pi2.set("update_stock", 1)
+		pi2.get("items")[0].qty = 3
+		pi2.insert()
+		pi2.submit()
+
+		po.load_from_db()
+		self.assertEqual(po.get("items")[0].received_qty, 9)
+
+	def test_return_against_purchase_order(self):
+		po = create_purchase_order()
+
+		pr = make_pr_against_po(po.name, 6)
+
+		po.load_from_db()
+		self.assertEqual(po.get("items")[0].received_qty, 6)
+
+		pi2 = make_purchase_invoice(po.name)
+		pi2.set("update_stock", 1)
+		pi2.get("items")[0].qty = 3
+		pi2.insert()
+		pi2.submit()
+
+		po.load_from_db()
+		self.assertEqual(po.get("items")[0].received_qty, 9)
+
+		# Make return purchase receipt, purchase invoice and check quantity
+		from erpnext.stock.doctype.purchase_receipt.test_purchase_receipt \
+				import make_purchase_receipt as make_purchase_receipt_return
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice \
+				import make_purchase_invoice as make_purchase_invoice_return
+
+		pr1 = make_purchase_receipt_return(is_return=1, return_against=pr.name, qty=-3, do_not_submit=True)
+		pr1.items[0].purchase_order = po.name
+		pr1.items[0].purchase_order_item = po.items[0].name
+		pr1.submit()
+
+		pi1= make_purchase_invoice_return(is_return=1, return_against=pi2.name, qty=-1, update_stock=1, do_not_submit=True)
+		pi1.items[0].purchase_order = po.name
+		pi1.items[0].po_detail = po.items[0].name
+		pi1.submit()
+
+
+		po.load_from_db()
+		self.assertEqual(po.get("items")[0].received_qty, 5)
 
 	def test_make_purchase_invoice(self):
 		po = create_purchase_order(do_not_submit=True)
@@ -510,6 +573,13 @@
 		frappe.db.set_value("Accounts Settings", "Accounts Settings",
 			"unlink_advance_payment_on_cancelation_of_order", 0)
 
+def make_pr_against_po(po, received_qty=0):
+	pr = make_purchase_receipt(po)
+	pr.get("items")[0].qty = received_qty or 5
+	pr.insert()
+	pr.submit()
+	return pr
+
 def make_subcontracted_item(item_code):
 	from erpnext.manufacturing.doctype.production_plan.test_production_plan import make_bom
 
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/__init__.py b/erpnext/buying/report/subcontracted_item_to_be_received/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/__init__.py
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.js b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.js
new file mode 100644
index 0000000..fc58b6a
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.js
@@ -0,0 +1,29 @@
+// Copyright (c) 2016, Frappe Technologies Pvt. Ltd. and contributors
+// For license information, please see license.txt
+/* eslint-disable */
+
+frappe.query_reports["Subcontracted Item To Be Received"] = {
+	"filters": [
+		{
+			fieldname: "supplier",
+			label: __("Supplier"),
+			fieldtype: "Link",
+			options: "Supplier",
+			reqd: 1
+		},
+		{
+			fieldname:"from_date",
+			label: __("From Date"),
+			fieldtype: "Date",
+			default: frappe.datetime.add_months(frappe.datetime.month_start(), -1),
+			reqd: 1
+		},
+		{
+			fieldname:"to_date",
+			label: __("To Date"),
+			fieldtype: "Date",
+			default: frappe.datetime.add_days(frappe.datetime.month_start(),-1),
+			reqd: 1
+		},
+	]
+};
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.json b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.json
new file mode 100644
index 0000000..fdf6cf7
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.json
@@ -0,0 +1,30 @@
+{
+ "add_total_row": 1,
+ "creation": "2019-05-03 11:25:03.685247",
+ "disable_prepared_report": 0,
+ "disabled": 0,
+ "docstatus": 0,
+ "doctype": "Report",
+ "idx": 0,
+ "is_standard": "Yes",
+ "modified": "2019-05-03 11:25:03.685247",
+ "modified_by": "Administrator",
+ "module": "Buying",
+ "name": "Subcontracted Item To Be Received",
+ "owner": "Administrator",
+ "prepared_report": 0,
+ "ref_doctype": "Purchase Order",
+ "report_name": "Subcontracted Item To Be Received",
+ "report_type": "Script Report",
+ "roles": [
+  {
+   "role": "Stock User"
+  },
+  {
+   "role": "Purchase Manager"
+  },
+  {
+   "role": "Purchase User"
+  }
+ ]
+}
\ No newline at end of file
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py
new file mode 100644
index 0000000..2da53d7
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/subcontracted_item_to_be_received.py
@@ -0,0 +1,104 @@
+# Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+from __future__ import unicode_literals
+import frappe
+from frappe import _
+
+def execute(filters=None):
+	if filters.from_date >= filters.to_date:
+		frappe.msgprint(_("To Date must be greater than From Date"))
+
+	data = []
+	columns = get_columns()
+	get_data(data , filters)
+	return columns, data
+
+def get_columns():
+	return [
+		{
+			"label": _("Purchase Order"),
+			"fieldtype": "Link",
+			"fieldname": "purchase_order",
+			"options": "Purchase Order",
+			"width": 150
+		},
+		{
+			"label": _("Date"),
+			"fieldtype": "Date",
+			"fieldname": "date",
+			"hidden": 1,
+			"width": 150
+		},
+		{
+			"label": _("Supplier"),
+			"fieldtype": "Link",
+			"fieldname": "supplier",
+			"options": "Supplier",
+			"width": 150
+		},
+		{
+			"label": _("Finished Good Item Code"),
+			"fieldtype": "Data",
+			"fieldname": "fg_item_code",
+			"width": 100
+		},
+		{
+			"label": _("Item name"),
+			"fieldtype": "Data",
+			"fieldname": "item_name",
+			"width": 100
+		},
+		{
+			"label": _("Required Quantity"),
+			"fieldtype": "Float",
+			"fieldname": "required_qty",
+			"width": 100
+		},
+		{
+			"label": _("Received Quantity"),
+			"fieldtype": "Float",
+			"fieldname": "received_qty",
+			"width": 100
+		},
+		{
+			"label": _("Pending Quantity"),
+			"fieldtype": "Float",
+			"fieldname": "pending_qty",
+			"width": 100
+		}
+	]
+
+def get_data(data, filters):
+	po = get_po(filters)
+	po_name = [v.name for v in po]
+	sub_items = get_purchase_order_item_supplied(po_name)
+	for item in sub_items:
+		for order in po:
+			if order.name == item.parent and item.received_qty < item.qty:
+				row ={
+					'purchase_order': item.parent,
+					'date': order.transaction_date,
+					'supplier': order.supplier,
+					'fg_item_code': item.item_code,
+					'item_name': item.item_name,
+					'required_qty': item.qty,
+					'received_qty':item.received_qty,
+					'pending_qty':item.qty - item.received_qty
+				}
+				data.append(row)
+
+def get_po(filters):
+	record_filters = [
+			["is_subcontracted", "=", "Yes"],
+			["supplier", "=", filters.supplier],
+			["transaction_date", "<=", filters.to_date],
+			["transaction_date", ">=", filters.from_date],
+			["docstatus", "=", 1]
+		]
+	return frappe.get_all("Purchase Order", filters=record_filters, fields=["name", "transaction_date", "supplier"])
+
+def get_purchase_order_item_supplied(po):
+	return frappe.get_all("Purchase Order Item", filters=[
+			('parent', 'IN', po)
+	], fields=["parent", "item_code", "item_name", "qty", "received_qty"])
diff --git a/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py b/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py
new file mode 100644
index 0000000..d8de701
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py
@@ -0,0 +1,36 @@
+# Python bytecode 2.7 (62211)
+# Embedded file name: /Users/anuragmishra/frappe-develop/apps/erpnext/erpnext/buying/report/subcontracted_item_to_be_received/test_subcontracted_item_to_be_received.py
+# Compiled at: 2019-05-06 09:51:46
+# Decompiled by https://python-decompiler.com
+from __future__ import unicode_literals
+from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+from erpnext.buying.doctype.purchase_order.purchase_order import make_purchase_receipt
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+from erpnext.buying.report.subcontracted_item_to_be_received.subcontracted_item_to_be_received import execute
+import frappe, unittest
+from pprint import pprint
+
+class TestSubcontractedItemToBeReceived(unittest.TestCase):
+
+	def test_pending_and_received_qty(self):
+		po = create_purchase_order(item_code='_Test FG Item', is_subcontracted='Yes')
+		transfer_param = []
+		make_stock_entry(item_code='_Test Item', target='_Test Warehouse 1 - _TC', qty=100, basic_rate=100)
+		make_stock_entry(item_code='_Test Item Home Desktop 100', target='_Test Warehouse 1 - _TC', qty=100, basic_rate=100)
+		make_purchase_receipt_against_po(po.name)
+		po.reload()
+		col, data = execute(filters=frappe._dict({'supplier': po.supplier,
+		   'from_date': frappe.utils.get_datetime(frappe.utils.add_to_date(po.transaction_date, days=-10)),
+		   'to_date': frappe.utils.get_datetime(frappe.utils.add_to_date(po.transaction_date, days=10))}))
+		self.assertEqual(data[0]['pending_qty'], 5)
+		self.assertEqual(data[0]['received_qty'], 5)
+		self.assertEqual(data[0]['purchase_order'], po.name)
+		self.assertEqual(data[0]['supplier'], po.supplier)
+
+
+def make_purchase_receipt_against_po(po, quantity=5):
+	pr = make_purchase_receipt(po)
+	pr.items[0].qty = quantity
+	pr.supplier_warehouse = '_Test Warehouse 1 - _TC'
+	pr.insert()
+	pr.submit()
\ No newline at end of file
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/__init__.py b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/__init__.py
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.js b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.js
new file mode 100644
index 0000000..0853afd
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.js
@@ -0,0 +1,29 @@
+// Copyright (c) 2016, Frappe Technologies Pvt. Ltd. and contributors
+// For license information, please see license.txt
+/* eslint-disable */
+
+frappe.query_reports["Subcontracted Raw Materials To Be Transferred"] = {
+	"filters": [
+		{
+			fieldname: "supplier",
+			label: __("Supplier"),
+			fieldtype: "Link",
+			options: "Supplier",
+			reqd: 1
+		},
+		{
+			fieldname:"from_date",
+			label: __("From Date"),
+			fieldtype: "Date",
+			default: frappe.datetime.add_months(frappe.datetime.month_start(), -1),
+			reqd: 1
+		},
+		{
+			fieldname:"to_date",
+			label: __("To Date"),
+			fieldtype: "Date",
+			default: frappe.datetime.add_days(frappe.datetime.month_start(),-1),
+			reqd: 1
+		},
+	]
+}
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.json b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.json
new file mode 100644
index 0000000..c7cee5e
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.json
@@ -0,0 +1,30 @@
+{
+ "add_total_row": 1,
+ "creation": "2019-05-03 12:04:14.438345",
+ "disable_prepared_report": 0,
+ "disabled": 0,
+ "docstatus": 0,
+ "doctype": "Report",
+ "idx": 0,
+ "is_standard": "Yes",
+ "modified": "2019-05-03 12:04:24.203721",
+ "modified_by": "Administrator",
+ "module": "Buying",
+ "name": "Subcontracted Raw Materials To Be Transferred",
+ "owner": "Administrator",
+ "prepared_report": 0,
+ "ref_doctype": "Purchase Order",
+ "report_name": "Subcontracted Raw Materials To Be Transferred",
+ "report_type": "Script Report",
+ "roles": [
+  {
+   "role": "Stock User"
+  },
+  {
+   "role": "Purchase Manager"
+  },
+  {
+   "role": "Purchase User"
+  }
+ ]
+}
\ No newline at end of file
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py
new file mode 100644
index 0000000..de2ae8f
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/subcontracted_raw_materials_to_be_transferred.py
@@ -0,0 +1,137 @@
+# Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+from __future__ import unicode_literals
+import frappe
+from frappe import _
+
+def execute(filters=None):
+	if filters.from_date >= filters.to_date:
+		frappe.msgprint(_("To Date must be greater than From Date"))
+
+	data = []
+	columns = get_columns()
+	get_data(data , filters)
+	return columns, data
+
+def get_columns():
+	return [
+		{
+			"label": _("Purchase Order"),
+			"fieldtype": "Link",
+			"fieldname": "purchase_order",
+			"options": "Purchase Order",
+			"width": 150
+		},
+		{
+			"label": _("Date"),
+			"fieldtype": "Date",
+			"fieldname": "date",
+			"hidden": 1,
+			"width": 150
+		},
+		{
+			"label": _("Supplier"),
+			"fieldtype": "Link",
+			"fieldname": "supplier",
+			"options": "Supplier",
+			"width": 150
+		},
+		{
+			"label": _("Item Code"),
+			"fieldtype": "Data",
+			"fieldname": "rm_item_code",
+			"width": 100
+		},
+		{
+			"label": _("Required Quantity"),
+			"fieldtype": "Float",
+			"fieldname": "r_qty",
+			"width": 100
+		},
+		{
+			"label": _("Transferred Quantity"),
+			"fieldtype": "Float",
+			"fieldname": "t_qty",
+			"width": 100
+		},
+		{
+			"label": _("Pending Quantity"),
+			"fieldtype": "Float",
+			"fieldname": "p_qty",
+			"width": 100
+		}
+	]
+
+def get_data(data, filters):
+	po = get_po(filters)
+	po_transferred_qty_map = frappe._dict(get_transferred_quantity([v.name for v in po]))
+
+	sub_items = get_purchase_order_item_supplied([v.name for v in po])
+
+	for order in po:
+		for item in sub_items:
+			if order.name == item.parent and order.name in po_transferred_qty_map and \
+				item.required_qty != po_transferred_qty_map.get(order.name).get(item.rm_item_code):
+				transferred_qty = po_transferred_qty_map.get(order.name).get(item.rm_item_code) \
+				if po_transferred_qty_map.get(order.name).get(item.rm_item_code) else 0
+				row ={
+					'purchase_order': item.parent,
+					'date': order.transaction_date,
+					'supplier': order.supplier,
+					'rm_item_code': item.rm_item_code,
+					'r_qty': item.required_qty,
+					't_qty':transferred_qty,
+					'p_qty':item.required_qty - transferred_qty
+				}
+
+				data.append(row)
+
+	return(data)
+
+def get_po(filters):
+	record_filters = [
+			["is_subcontracted", "=", "Yes"],
+			["supplier", "=", filters.supplier],
+			["transaction_date", "<=", filters.to_date],
+			["transaction_date", ">=", filters.from_date],
+			["docstatus", "=", 1]
+		]
+	return frappe.get_all("Purchase Order", filters=record_filters, fields=["name", "transaction_date", "supplier"])
+
+def get_transferred_quantity(po_name):
+	stock_entries = get_stock_entry(po_name)
+	stock_entries_detail = get_stock_entry_detail([v.name for v in stock_entries])
+	po_transferred_qty_map = {}
+
+
+	for entry in stock_entries:
+		for details in stock_entries_detail:
+			if details.parent == entry.name:
+				details["Purchase_order"] = entry.purchase_order
+				if entry.purchase_order not in po_transferred_qty_map:
+					po_transferred_qty_map[entry.purchase_order] = {}
+					po_transferred_qty_map[entry.purchase_order][details.item_code] = details.qty
+				else:
+					po_transferred_qty_map[entry.purchase_order][details.item_code] = po_transferred_qty_map[entry.purchase_order].get(details.item_code, 0) + details.qty
+
+	return po_transferred_qty_map
+
+
+def get_stock_entry(po):
+	return frappe.get_all("Stock Entry", filters=[
+			('purchase_order', 'IN', po),
+			('stock_entry_type', '=', 'Send to Subcontractor'),
+			('docstatus', '=', 1)
+	], fields=["name", "purchase_order"])
+
+def get_stock_entry_detail(se):
+	return frappe.get_all("Stock Entry Detail", filters=[
+			["parent", "in", se]
+		],
+		fields=["parent", "item_code", "qty"])
+
+def get_purchase_order_item_supplied(po):
+	return frappe.get_all("Purchase Order Item Supplied", filters=[
+			('parent', 'IN', po)
+	], fields=['parent', 'rm_item_code', 'required_qty'])
diff --git a/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py
new file mode 100644
index 0000000..6900938
--- /dev/null
+++ b/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py
@@ -0,0 +1,44 @@
+# Python bytecode 2.7 (62211)
+# Embedded file name: /Users/anuragmishra/frappe-develop/apps/erpnext/erpnext/buying/report/subcontracted_raw_materials_to_be_transferred/test_subcontracted_raw_materials_to_be_transferred.py
+# Compiled at: 2019-05-06 10:24:35
+# Decompiled by https://python-decompiler.com
+from __future__ import unicode_literals
+from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
+from erpnext.buying.doctype.purchase_order.purchase_order import make_rm_stock_entry
+from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+from erpnext.buying.report.subcontracted_raw_materials_to_be_transferred.subcontracted_raw_materials_to_be_transferred import execute
+import json, frappe, unittest
+
+class TestSubcontractedItemToBeReceived(unittest.TestCase):
+
+	def test_pending_and_received_qty(self):
+		po = create_purchase_order(item_code='_Test FG Item', is_subcontracted='Yes')
+		make_stock_entry(item_code='_Test Item', target='_Test Warehouse 1 - _TC', qty=100, basic_rate=100)
+		make_stock_entry(item_code='_Test Item Home Desktop 100', target='_Test Warehouse 1 - _TC', qty=100, basic_rate=100)
+		transfer_subcontracted_raw_materials(po.name)
+		col, data = execute(filters=frappe._dict({'supplier': po.supplier,
+		   'from_date': frappe.utils.get_datetime(frappe.utils.add_to_date(po.transaction_date, days=-10)),
+		   'to_date': frappe.utils.get_datetime(frappe.utils.add_to_date(po.transaction_date, days=10))}))
+		self.assertEqual(data[0]['purchase_order'], po.name)
+		self.assertIn(data[0]['rm_item_code'], ['_Test Item', '_Test Item Home Desktop 100'])
+		self.assertIn(data[0]['p_qty'], [9, 18])
+		self.assertIn(data[0]['t_qty'], [1, 2])
+
+		self.assertEqual(data[1]['purchase_order'], po.name)
+		self.assertIn(data[1]['rm_item_code'], ['_Test Item', '_Test Item Home Desktop 100'])
+		self.assertIn(data[1]['p_qty'], [9, 18])
+		self.assertIn(data[1]['t_qty'], [1, 2])
+
+
+def transfer_subcontracted_raw_materials(po):
+	rm_item = [
+	 {'item_code': '_Test Item', 'rm_item_code': '_Test Item', 'item_name': '_Test Item', 'qty': 1,
+		'warehouse': '_Test Warehouse - _TC', 'rate': 100, 'amount': 100, 'stock_uom': 'Nos'},
+	 {'item_code': '_Test Item Home Desktop 100', 'rm_item_code': '_Test Item Home Desktop 100', 'item_name': '_Test Item Home Desktop 100', 'qty': 2,
+		'warehouse': '_Test Warehouse - _TC', 'rate': 100, 'amount': 200, 'stock_uom': 'Nos'}]
+	rm_item_string = json.dumps(rm_item)
+	se = frappe.get_doc(make_rm_stock_entry(po, rm_item_string))
+	se.to_warehouse = '_Test Warehouse 1 - _TC'
+	se.stock_entry_type = 'Send to Subcontractor'
+	se.save()
+	se.submit()
\ No newline at end of file
diff --git a/erpnext/config/selling.py b/erpnext/config/selling.py
index 63e7ad9..9209ca9 100644
--- a/erpnext/config/selling.py
+++ b/erpnext/config/selling.py
@@ -299,6 +299,12 @@
 					"name": "Customers Without Any Sales Transactions",
 					"doctype": "Customer"
 				},
+				{
+					"type": "report",
+					"is_query_report": True,
+					"name": "Sales Partners Commission",
+					"doctype": "Customer"
+				}
 			]
 		},
 		{
diff --git a/erpnext/controllers/queries.py b/erpnext/controllers/queries.py
index 1bf03ec..2284669 100644
--- a/erpnext/controllers/queries.py
+++ b/erpnext/controllers/queries.py
@@ -253,11 +253,13 @@
 					and return_against in (select name from `tabDelivery Note` where per_billed < 100)
 				)
 			)
-			%(mcond)s order by `tabDelivery Note`.`%(key)s` asc
+			%(mcond)s order by `tabDelivery Note`.`%(key)s` asc limit %(start)s, %(page_len)s
 	""" % {
 		"key": searchfield,
 		"fcond": get_filters_cond(doctype, filters, []),
 		"mcond": get_match_cond(doctype),
+		"start": start,
+		"page_len": page_len,
 		"txt": "%(txt)s"
 	}, {"txt": ("%%%s%%" % txt)}, as_dict=as_dict)
 
diff --git a/erpnext/hr/doctype/additional_salary/additional_salary.js b/erpnext/hr/doctype/additional_salary/additional_salary.js
index a96bb94..d0f64ab 100644
--- a/erpnext/hr/doctype/additional_salary/additional_salary.js
+++ b/erpnext/hr/doctype/additional_salary/additional_salary.js
@@ -3,13 +3,8 @@
 
 frappe.ui.form.on('Additional Salary', {
 	setup: function(frm) {
-		frm.set_query("salary_component", function() {
-			return {
-				filters: {
-					is_additional_component: true
-				}
-			};
-		});
+		frm.add_fetch("salary_component", "deduct_full_tax_on_selected_payroll_date", "deduct_full_tax_on_selected_payroll_date");
+
 		frm.set_query("employee", function() {
 			return {
 				filters: {
diff --git a/erpnext/hr/doctype/additional_salary/additional_salary.json b/erpnext/hr/doctype/additional_salary/additional_salary.json
index 7f9e51b..6768b49 100644
--- a/erpnext/hr/doctype/additional_salary/additional_salary.json
+++ b/erpnext/hr/doctype/additional_salary/additional_salary.json
@@ -1,5 +1,6 @@
 {
  "allow_copy": 0, 
+ "allow_events_in_timeline": 0, 
  "allow_guest_to_view": 0, 
  "allow_import": 1, 
  "allow_rename": 0, 
@@ -21,6 +22,7 @@
    "collapsible": 0, 
    "columns": 0, 
    "default": "", 
+   "fetch_if_empty": 0, 
    "fieldname": "naming_series", 
    "fieldtype": "Select", 
    "hidden": 0, 
@@ -54,6 +56,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "employee", 
    "fieldtype": "Link", 
    "hidden": 0, 
@@ -87,6 +90,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "salary_component", 
    "fieldtype": "Link", 
    "hidden": 0, 
@@ -120,6 +124,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "amount", 
    "fieldtype": "Currency", 
    "hidden": 0, 
@@ -153,6 +158,7 @@
    "collapsible": 0, 
    "columns": 0, 
    "default": "1", 
+   "fetch_if_empty": 0, 
    "fieldname": "overwrite_salary_structure_amount", 
    "fieldtype": "Check", 
    "hidden": 0, 
@@ -185,6 +191,40 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
+   "fieldname": "deduct_full_tax_on_selected_payroll_date", 
+   "fieldtype": "Check", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Deduct Full Tax on Selected Payroll Date", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "column_break_5", 
    "fieldtype": "Column Break", 
    "hidden": 0, 
@@ -217,6 +257,8 @@
    "collapsible": 0, 
    "columns": 0, 
    "default": "", 
+   "description": "Date on which this component is applied", 
+   "fetch_if_empty": 0, 
    "fieldname": "payroll_date", 
    "fieldtype": "Date", 
    "hidden": 0, 
@@ -250,6 +292,7 @@
    "collapsible": 0, 
    "columns": 0, 
    "fetch_from": "employee.employee_name", 
+   "fetch_if_empty": 0, 
    "fieldname": "employee_name", 
    "fieldtype": "Data", 
    "hidden": 0, 
@@ -284,6 +327,7 @@
    "collapsible": 0, 
    "columns": 0, 
    "fetch_from": "employee.department", 
+   "fetch_if_empty": 0, 
    "fieldname": "department", 
    "fieldtype": "Link", 
    "hidden": 0, 
@@ -317,6 +361,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "company", 
    "fieldtype": "Link", 
    "hidden": 0, 
@@ -350,6 +395,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "salary_slip", 
    "fieldtype": "Link", 
    "hidden": 0, 
@@ -384,6 +430,7 @@
    "collapsible": 0, 
    "columns": 0, 
    "fetch_from": "salary_component.type", 
+   "fetch_if_empty": 0, 
    "fieldname": "type", 
    "fieldtype": "Data", 
    "hidden": 0, 
@@ -417,6 +464,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "amended_from", 
    "fieldtype": "Link", 
    "hidden": 0, 
@@ -453,7 +501,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2018-08-21 14:44:22.921926", 
+ "modified": "2019-05-09 19:53:37.475839", 
  "modified_by": "Administrator", 
  "module": "HR", 
  "name": "Additional Salary", 
diff --git a/erpnext/hr/doctype/additional_salary/additional_salary.py b/erpnext/hr/doctype/additional_salary/additional_salary.py
index 9ca1260..82f2a22 100644
--- a/erpnext/hr/doctype/additional_salary/additional_salary.py
+++ b/erpnext/hr/doctype/additional_salary/additional_salary.py
@@ -9,6 +9,12 @@
 from frappe.utils import getdate, date_diff
 
 class AdditionalSalary(Document):
+	def before_insert(self):
+		if frappe.db.exists("Additional Salary", {"employee": self.employee, "salary_component": self.salary_component,
+			"amount": self.amount, "payroll_date": self.payroll_date, "company": self.company}):
+
+			frappe.throw(_("Additional Salary Component Exists."))
+
 	def validate(self):
 		self.validate_dates()
 		if self.amount < 0:
@@ -35,7 +41,8 @@
 @frappe.whitelist()
 def get_additional_salary_component(employee, start_date, end_date):
 	additional_components = frappe.db.sql("""
-		select salary_component, sum(amount) as amount, overwrite_salary_structure_amount from `tabAdditional Salary`
+		select salary_component, sum(amount) as amount, overwrite_salary_structure_amount, deduct_full_tax_on_selected_payroll_date
+		from `tabAdditional Salary`
 		where employee=%(employee)s
 			and docstatus = 1
 			and payroll_date between %(from_date)s and %(to_date)s
@@ -48,16 +55,20 @@
 	}, as_dict=1)
 
 	additional_components_list = []
+	component_fields = ["depends_on_payment_days", "salary_component_abbr", "is_tax_applicable", "variable_based_on_taxable_salary", 'type']
 	for d in additional_components:
-		component = frappe.get_doc("Salary Component", d.salary_component)
-		struct_row = {'salary_component': d.salary_component}
-		for field in ["depends_on_payment_days", "abbr", "is_tax_applicable", "variable_based_on_taxable_salary", "is_additional_component"]:
-			struct_row[field] = component.get(field)
+		struct_row = frappe._dict({'salary_component': d.salary_component})
+		component = frappe.get_all("Salary Component", filters={'name': d.salary_component}, fields=component_fields)
+		if component:
+			struct_row.update(component[0])
 
-		additional_components_list.append({
+		struct_row['deduct_full_tax_on_selected_payroll_date'] = d.deduct_full_tax_on_selected_payroll_date
+		struct_row['is_additional_component'] = 1
+
+		additional_components_list.append(frappe._dict({
 			'amount': d.amount,
-			'type': component.type,
+			'type': component[0].type,
 			'struct_row': struct_row,
-			'overwrite': d.overwrite_salary_structure_amount
-		})
+			'overwrite': d.overwrite_salary_structure_amount,
+		}))
 	return additional_components_list
\ No newline at end of file
diff --git a/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.js b/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.js
index 412a08a..e71ce12 100644
--- a/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.js
+++ b/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.js
@@ -3,13 +3,18 @@
 
 frappe.ui.form.on('Employee Benefit Application', {
 	setup: function(frm) {
-		frm.set_query("earning_component", "employee_benefits", function() {
-			return {
-				query : "erpnext.hr.doctype.employee_benefit_application.employee_benefit_application.get_earning_components",
-				filters: {date: frm.doc.date, employee: frm.doc.employee}
-			};
-		});
+		if(!frm.doc.employee || !frm.doc.date) {
+			frappe.throw(__("Please select Employee and Date first"));
+		} else {
+			frm.set_query("earning_component", "employee_benefits", function() {
+				return {
+					query : "erpnext.hr.doctype.employee_benefit_application.employee_benefit_application.get_earning_components",
+					filters: {date: frm.doc.date, employee: frm.doc.employee}
+				};
+			});
+		}
 	},
+
 	employee: function(frm) {
 		var method, args;
 		if(frm.doc.employee && frm.doc.date && frm.doc.payroll_period){
diff --git a/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.py b/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.py
index 701ae24..fea4246 100644
--- a/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.py
+++ b/erpnext/hr/doctype/employee_benefit_application/employee_benefit_application.py
@@ -7,7 +7,7 @@
 from frappe import _
 from frappe.utils import date_diff, getdate, rounded, add_days, cstr, cint, flt
 from frappe.model.document import Document
-from erpnext.hr.doctype.payroll_period.payroll_period import get_payroll_period_days
+from erpnext.hr.doctype.payroll_period.payroll_period import get_payroll_period_days, get_period_factor
 from erpnext.hr.doctype.salary_structure_assignment.salary_structure_assignment import get_assigned_salary_structure
 from erpnext.hr.utils import get_sal_slip_total_benefit_given, get_holidays_for_employee, get_previous_claimed_amount
 
@@ -131,7 +131,7 @@
 					salary_component = frappe.get_doc("Salary Component", sal_struct_row.salary_component)
 					if salary_component.depends_on_payment_days == 1 and salary_component.pay_against_benefit_claim != 1:
 						have_depends_on_payment_days = True
-						benefit_amount = get_benefit_pro_rata_ratio_amount(sal_struct, salary_component.max_benefit_amount)
+						benefit_amount = get_benefit_amount_based_on_pro_rata(sal_struct, salary_component.max_benefit_amount)
 						amount_per_day = benefit_amount / payroll_period_days
 						per_day_amount_total += amount_per_day
 
@@ -167,16 +167,14 @@
 			lwp = cint(leave[0][1]) and (lwp + 0.5) or (lwp + 1)
 	return lwp
 
-def get_benefit_component_amount(employee, start_date, end_date, struct_row, sal_struct, period_length, frequency):
-	payroll_period, period_factor, actual_payroll_days = get_payroll_period_days(start_date, end_date, employee)
-
+def get_benefit_component_amount(employee, start_date, end_date, salary_component, sal_struct, payroll_frequency, payroll_period):
 	if not payroll_period:
-		frappe.msgprint(_("Start and end dates not in a valid Payroll Period, cannot calculate {0}.")
-			.format(struct_row.salary_component))
+		frappe.msgprint(_("Start and end dates not in a valid Payroll Period, cannot calculate {0}")
+			.format(salary_component))
 		return False
 
 	# Considering there is only one application for a year
-	benefit_application_name = frappe.db.sql("""
+	benefit_application = frappe.db.sql("""
 		select name
 		from `tabEmployee Benefit Application`
 		where
@@ -185,69 +183,58 @@
 			and docstatus = 1
 	""", {
 		'employee': employee,
-		'payroll_period': payroll_period
+		'payroll_period': payroll_period.name
 	})
 
-	if frappe.db.get_value("Salary Component", struct_row.salary_component, "depends_on_payment_days") != 1:
-		if frequency == "Monthly" and actual_payroll_days in range(360, 370):
-			period_length = 1
-			period_factor = 12
+	current_benefit_amount = 0.0
+	component_max_benefit, depends_on_payment_days = frappe.db.get_value("Salary Component",
+		salary_component, ["max_benefit_amount", "depends_on_payment_days"])
 
-	if period_factor:
-		# If there is application for benefit then fetch the amount from the application.
-		# else Split the max benefits to the pro-rata components with the ratio of their max_benefit_amount
-		if benefit_application_name:
-			benefit_application = frappe.get_doc("Employee Benefit Application", benefit_application_name[0][0])
-			return get_benefit_amount(benefit_application, struct_row, period_factor, period_length)
+	if benefit_application:
+		benefit_amount = frappe.db.get_value("Employee Benefit Application Detail",
+			{"parent": benefit_application[0][0], "earning_component": salary_component}, "amount")
+	elif component_max_benefit:
+		benefit_amount = get_benefit_amount_based_on_pro_rata(sal_struct, component_max_benefit)
 
-		# TODO: Check if there is benefit claim for employee then pro-rata divide the rest of amount (Late Benefit Application)
-		else:
-			component_max = frappe.db.get_value("Salary Component", struct_row.salary_component, "max_benefit_amount")
-			if component_max:
-				benefit_amount = get_benefit_pro_rata_ratio_amount(sal_struct, component_max)
-				return get_amount(period_factor, benefit_amount, period_length)
-	return False
+	current_benefit_amount = 0
+	if benefit_amount:
+		total_sub_periods = get_period_factor(employee,
+			start_date, end_date, payroll_frequency, payroll_period, depends_on_payment_days)[0]
 
-def get_benefit_pro_rata_ratio_amount(sal_struct, component_max):
-	total_pro_rata_max = 0
+		current_benefit_amount = benefit_amount / total_sub_periods
+
+	return current_benefit_amount
+
+def get_benefit_amount_based_on_pro_rata(sal_struct, component_max_benefit):
+	max_benefits_total = 0
 	benefit_amount = 0
-	for sal_struct_row in sal_struct.get("earnings"):
-		pay_against_benefit_claim, max_benefit_amount = frappe.db.get_value("Salary Component",
-			sal_struct_row.salary_component, ["pay_against_benefit_claim", "max_benefit_amount"])
-		if sal_struct_row.is_flexible_benefit == 1 and pay_against_benefit_claim != 1:
-			total_pro_rata_max += max_benefit_amount
-	if total_pro_rata_max > 0:
-		benefit_amount = component_max * sal_struct.max_benefits / total_pro_rata_max
-		if benefit_amount > component_max:
-			benefit_amount = component_max
+	for d in sal_struct.get("earnings"):
+		if d.is_flexible_benefit == 1:
+			component = frappe.db.get_value("Salary Component", d.salary_component, ["max_benefit_amount", "pay_against_benefit_claim"], as_dict=1)
+			if not component.pay_against_benefit_claim:
+				max_benefits_total += component.max_benefit_amount
+
+	if max_benefits_total > 0:
+		benefit_amount = sal_struct.max_benefits * component.max_benefit_amount / max_benefits_total
+		if benefit_amount > component_max_benefit:
+			benefit_amount = component_max_benefit
+
 	return benefit_amount
 
-def get_benefit_amount(application, struct_row, period_factor, period_length):
-	amount = 0
-	for employee_benefit in application.employee_benefits:
-		if employee_benefit.earning_component == struct_row.salary_component:
-			amount += get_amount(period_factor, employee_benefit.amount, period_length)
-	return amount if amount > 0 else False
-
-def get_amount(period_factor, amount, period_length):
-	amount_per_day = amount / period_factor
-	total_amount = amount_per_day * period_length
-	return total_amount
 
 def get_earning_components(doctype, txt, searchfield, start, page_len, filters):
 	if len(filters) < 2:
 		return {}
-	employee = filters['employee']
-	date = filters['date']
-	salary_structure = get_assigned_salary_structure(employee, date)
+
+	salary_structure = get_assigned_salary_structure(filters['employee'], filters['date'])
 
 	if salary_structure:
-		query = """select salary_component from `tabSalary Detail` where parent = '{salary_structure}'
-		and is_flexible_benefit = 1
-		order by name"""
-
-		return frappe.db.sql(query.format(**{
-			"salary_structure": salary_structure
-		}))
-
-	return {}
+		return frappe.db.sql("""
+			select salary_component
+			from `tabSalary Detail`
+			where parent = %s and is_flexible_benefit = 1
+			order by name
+		""", salary_structure)
+	else:
+		frappe.throw(_("Salary Structure not found for employee {0} and date {1}")
+			.format(filters['employee'], filters['date']))
\ No newline at end of file
diff --git a/erpnext/hr/doctype/employee_benefit_claim/employee_benefit_claim.py b/erpnext/hr/doctype/employee_benefit_claim/employee_benefit_claim.py
index 8be67a8..3a80b30 100644
--- a/erpnext/hr/doctype/employee_benefit_claim/employee_benefit_claim.py
+++ b/erpnext/hr/doctype/employee_benefit_claim/employee_benefit_claim.py
@@ -5,9 +5,11 @@
 from __future__ import unicode_literals
 import frappe
 from frappe import _
+from frappe.utils import flt
 from frappe.model.document import Document
 from erpnext.hr.doctype.employee_benefit_application.employee_benefit_application import get_max_benefits
-from erpnext.hr.utils import get_payroll_period, get_previous_claimed_amount
+from erpnext.hr.utils import get_previous_claimed_amount
+from erpnext.hr.doctype.payroll_period.payroll_period import get_payroll_period
 from erpnext.hr.doctype.salary_structure_assignment.salary_structure_assignment import get_assigned_salary_structure
 
 class EmployeeBenefitClaim(Document):
@@ -97,31 +99,28 @@
 				benefit_amount_total += benefit_amount
 	return benefit_amount_total
 
-def get_benefit_claim_amount(employee, start_date, end_date, salary_component):
-	query = """select claimed_amount from `tabEmployee Benefit Claim`
-	where employee=%(employee)s
-	and docstatus = 1 and pay_against_benefit_claim = 1
+def get_benefit_claim_amount(employee, start_date, end_date, salary_component=None):
+	query = """
+		select sum(claimed_amount)
+		from `tabEmployee Benefit Claim`
+		where
+			employee=%(employee)s
+			and docstatus = 1
+			and pay_against_benefit_claim = 1
+			and claim_date between %(start_date)s and %(end_date)s
 	"""
-	if not start_date:
-		query += "and claim_date <= %(end_date)s"
-	else:
-		query += "and (claim_date between %(start_date)s and %(end_date)s)"
 
 	if salary_component:
-		query += "and earning_component = %(earning_component)s"
+		query += " and earning_component = %(earning_component)s"
 
-	benefit_claim_details = frappe.db.sql(query, {
+	claimed_amount = flt(frappe.db.sql(query, {
 		'employee': employee,
 		'start_date': start_date,
 		'end_date': end_date,
 		'earning_component': salary_component
-	}, as_dict = True)
-	if benefit_claim_details:
-		claimed_amount = 0
-		for claim_detail in benefit_claim_details:
-			claimed_amount += claim_detail.claimed_amount
-		return claimed_amount
-	return False
+	})[0][0])
+
+	return claimed_amount
 
 def get_total_benefit_dispensed(employee, sal_struct, sal_slip_start_date, payroll_period):
 	pro_rata_amount = 0
@@ -140,11 +139,11 @@
 	else:
 		pro_rata_amount = get_benefit_pro_rata_ratio_amount(employee, sal_slip_start_date, sal_struct)
 
-	claimed_amount += get_benefit_claim_amount(employee, payroll_period.start_date, payroll_period.end_date, False)
+	claimed_amount += get_benefit_claim_amount(employee, payroll_period.start_date, payroll_period.end_date)
 
 	return claimed_amount + pro_rata_amount
 
-def get_last_payroll_period_benefits(employee, sal_slip_start_date, sal_slip_end_date, current_flexi_amount, payroll_period,  sal_struct):
+def get_last_payroll_period_benefits(employee, sal_slip_start_date, sal_slip_end_date, payroll_period,  sal_struct):
 	max_benefits = get_max_benefits(employee, payroll_period.end_date)
 	if not max_benefits:
 		max_benefits = 0
diff --git a/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json b/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json
index 8891b97..e102ff8 100644
--- a/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json
+++ b/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.json
@@ -446,6 +446,72 @@
    "set_only_once": 0, 
    "translatable": 0, 
    "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fetch_if_empty": 0, 
+   "fieldname": "other_incomes_section", 
+   "fieldtype": "Section Break", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Other Incomes", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fetch_if_empty": 0, 
+   "fieldname": "income_from_other_sources", 
+   "fieldtype": "Currency", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Income From Other Sources", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
   }
  ], 
  "has_web_view": 0, 
@@ -458,7 +524,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2019-04-25 16:38:05.847925", 
+ "modified": "2019-05-11 16:13:50.472670", 
  "modified_by": "Administrator", 
  "module": "HR", 
  "name": "Employee Tax Exemption Declaration", 
diff --git a/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py b/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py
index cbdfcf8..f2bba7a 100644
--- a/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py
+++ b/erpnext/hr/doctype/employee_tax_exemption_declaration/employee_tax_exemption_declaration.py
@@ -25,7 +25,8 @@
 			filters = {
 				"employee": self.employee,
 				"payroll_period": self.payroll_period,
-				"name": ["!=", self.name]
+				"name": ["!=", self.name],
+				"docstatus": ["!=", 2]
 			}
 		)
 		if duplicate:
diff --git a/erpnext/hr/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json b/erpnext/hr/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json
index 76c09d6..9792bd1 100644
--- a/erpnext/hr/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json
+++ b/erpnext/hr/doctype/employee_tax_exemption_proof_submission/employee_tax_exemption_proof_submission.json
@@ -456,6 +456,72 @@
    "collapsible": 0, 
    "columns": 0, 
    "fetch_if_empty": 0, 
+   "fieldname": "other_incomes_section", 
+   "fieldtype": "Section Break", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Other Incomes", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fetch_if_empty": 0, 
+   "fieldname": "income_from_other_sources", 
+   "fieldtype": "Currency", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Income From Other Sources", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "attachment_section", 
    "fieldtype": "Section Break", 
    "hidden": 0, 
@@ -558,7 +624,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2019-04-25 17:06:36.569549", 
+ "modified": "2019-05-13 12:17:18.045171", 
  "modified_by": "Administrator", 
  "module": "HR", 
  "name": "Employee Tax Exemption Proof Submission", 
diff --git a/erpnext/hr/doctype/hr_settings/hr_settings.js b/erpnext/hr/doctype/hr_settings/hr_settings.js
index 58ce422..d8be46b 100644
--- a/erpnext/hr/doctype/hr_settings/hr_settings.js
+++ b/erpnext/hr/doctype/hr_settings/hr_settings.js
@@ -13,9 +13,11 @@
 
 	validate: function(frm) {
 		let policy = frm.doc.password_policy;
-		if (policy.includes(' ') || policy.includes('--')) {
-			frappe.msgprint("Password policy cannot contain spaces or simultaneous hyphens. The format will be restructured automatically");
+		if (policy) {
+			if (policy.includes(' ') || policy.includes('--')) {
+				frappe.msgprint("Password policy cannot contain spaces or simultaneous hyphens. The format will be restructured automatically");
+			}
+			frm.set_value('password_policy', policy.split(new RegExp(" |-", 'g')).filter((token) => token).join('-'));
 		}
-		frm.set_value('password_policy', policy.split(new RegExp(" |-", 'g')).filter((token) => token).join('-'));
 	}
 });
diff --git a/erpnext/hr/doctype/payroll_entry/payroll_entry.py b/erpnext/hr/doctype/payroll_entry/payroll_entry.py
index 0961ffc..4ce2513 100644
--- a/erpnext/hr/doctype/payroll_entry/payroll_entry.py
+++ b/erpnext/hr/doctype/payroll_entry/payroll_entry.py
@@ -543,14 +543,15 @@
 
 		payroll_entry.email_salary_slip(submitted_ss)
 
-	payroll_entry.db_set("salary_slips_submitted", 1)
-	payroll_entry.notify_update()
+		payroll_entry.db_set("salary_slips_submitted", 1)
+		payroll_entry.notify_update()
 
 	if not submitted_ss and not not_submitted_ss:
 		frappe.msgprint(_("No salary slip found to submit for the above selected criteria OR salary slip already submitted"))
 
 	if not_submitted_ss:
 		frappe.msgprint(_("Could not submit some Salary Slips"))
+
 def get_payroll_entries_for_jv(doctype, txt, searchfield, start, page_len, filters):
 	return frappe.db.sql("""
 		select name from `tabPayroll Entry`
diff --git a/erpnext/hr/doctype/payroll_period/payroll_period.py b/erpnext/hr/doctype/payroll_period/payroll_period.py
index 506af99..cb4264b 100644
--- a/erpnext/hr/doctype/payroll_period/payroll_period.py
+++ b/erpnext/hr/doctype/payroll_period/payroll_period.py
@@ -5,7 +5,7 @@
 from __future__ import unicode_literals
 import frappe
 from frappe import _
-from frappe.utils import date_diff, getdate, formatdate, cint
+from frappe.utils import date_diff, getdate, formatdate, cint, month_diff, flt
 from frappe.model.document import Document
 from erpnext.hr.utils import get_holidays_for_employee
 
@@ -48,12 +48,13 @@
 def get_payroll_period_days(start_date, end_date, employee):
 	company = frappe.db.get_value("Employee", employee, "company")
 	payroll_period = frappe.db.sql("""
-	select name, start_date, end_date from `tabPayroll Period`
-	where company=%(company)s
-	and (
-		(%(start_date)s between start_date and end_date)
-		and (%(end_date)s between start_date and end_date)
-	)""", {
+		select name, start_date, end_date
+		from `tabPayroll Period`
+		where
+			company=%(company)s
+			and %(start_date)s between start_date and end_date
+			and %(end_date)s between start_date and end_date
+	""", {
 		'company': company,
 		'start_date': start_date,
 		'end_date': end_date
@@ -67,3 +68,38 @@
 			working_days -= len(holidays)
 		return payroll_period[0][0], working_days, actual_no_of_days
 	return False, False, False
+
+def get_payroll_period(from_date, to_date, company):
+	payroll_period = frappe.db.sql("""
+		select name, start_date, end_date
+		from `tabPayroll Period`
+		where start_date<=%s and end_date>= %s and company=%s
+	""", (from_date, to_date, company), as_dict=1)
+
+	return payroll_period[0] if payroll_period else None
+
+def get_period_factor(employee, start_date, end_date, payroll_frequency, payroll_period, depends_on_payment_days=0):
+	# TODO if both deduct checked update the factor to make tax consistent
+	period_start, period_end = payroll_period.start_date, payroll_period.end_date
+	joining_date, relieving_date = frappe.db.get_value("Employee", employee, ["date_of_joining", "relieving_date"])
+
+	if getdate(joining_date) > getdate(period_start):
+		period_start = joining_date
+	if relieving_date and getdate(relieving_date) < getdate(period_end):
+		period_end = relieving_date
+
+	total_sub_periods, remaining_sub_periods = 0.0, 0.0
+
+	if payroll_frequency ==  "Monthly" and not depends_on_payment_days:
+		total_sub_periods = month_diff(payroll_period.end_date, payroll_period.start_date)
+		remaining_sub_periods = month_diff(period_end, start_date)
+	else:
+		salary_days = date_diff(end_date, start_date) + 1
+
+		days_in_payroll_period = date_diff(payroll_period.end_date, payroll_period.start_date) + 1
+		total_sub_periods = flt(days_in_payroll_period) / flt(salary_days)
+
+		remaining_days_in_payroll_period = date_diff(period_end, start_date) + 1
+		remaining_sub_periods = flt(remaining_days_in_payroll_period) / flt(salary_days)
+
+	return total_sub_periods, remaining_sub_periods
\ No newline at end of file
diff --git a/erpnext/hr/doctype/salary_component/salary_component.js b/erpnext/hr/doctype/salary_component/salary_component.js
index f6afd5e..c455eb3 100644
--- a/erpnext/hr/doctype/salary_component/salary_component.js
+++ b/erpnext/hr/doctype/salary_component/salary_component.js
@@ -24,14 +24,6 @@
 	is_flexible_benefit: function(frm) {
 		if(frm.doc.is_flexible_benefit){
 			set_value_for_condition_and_formula(frm);
-			frm.set_value("is_additional_component", 0);
-			frm.set_value("formula", '');
-			frm.set_value("amount", 0);
-		}
-	},
-	is_additional_component: function(frm) {
-		if(frm.doc.is_additional_component){
-			frm.set_value("is_flexible_benefit", 0);
 			frm.set_value("formula", '');
 			frm.set_value("amount", 0);
 		}
diff --git a/erpnext/hr/doctype/salary_component/salary_component.json b/erpnext/hr/doctype/salary_component/salary_component.json
index 697d224..ca49cea 100644
--- a/erpnext/hr/doctype/salary_component/salary_component.json
+++ b/erpnext/hr/doctype/salary_component/salary_component.json
@@ -122,40 +122,6 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
-   "depends_on": "eval:doc.is_flexible_benefit != 1", 
-   "fetch_if_empty": 0, 
-   "fieldname": "is_additional_component", 
-   "fieldtype": "Check", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Is Additional Component", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
-  {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
    "default": "1", 
    "depends_on": "eval:doc.type == \"Earning\"", 
    "fetch_if_empty": 0, 
@@ -293,6 +259,39 @@
    "collapsible": 0, 
    "columns": 0, 
    "fetch_if_empty": 0, 
+   "fieldname": "deduct_full_tax_on_selected_payroll_date", 
+   "fieldtype": "Check", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Deduct Full Tax on Selected Payroll Date", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "fetch_if_empty": 0, 
    "fieldname": "column_break_4", 
    "fieldtype": "Column Break", 
    "hidden": 0, 
@@ -424,7 +423,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
-   "depends_on": "eval:doc.type==\"Earning\" && doc.is_additional_component != 1 && doc.statistical_component!=1", 
+   "depends_on": "eval:doc.type==\"Earning\" && doc.statistical_component!=1", 
    "fetch_if_empty": 0, 
    "fieldname": "flexible_benefits", 
    "fieldtype": "Section Break", 
@@ -458,7 +457,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
-   "depends_on": "eval:doc.is_additional_component != 1", 
+   "depends_on": "", 
    "fetch_if_empty": 0, 
    "fieldname": "is_flexible_benefit", 
    "fieldtype": "Check", 
@@ -1035,7 +1034,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2019-04-16 19:08:55.323567", 
+ "modified": "2019-05-13 12:55:55.424370", 
  "modified_by": "Administrator", 
  "module": "HR", 
  "name": "Salary Component", 
diff --git a/erpnext/hr/doctype/salary_component/test_records.json b/erpnext/hr/doctype/salary_component/test_records.json
index 69491be..7b22b48 100644
--- a/erpnext/hr/doctype/salary_component/test_records.json
+++ b/erpnext/hr/doctype/salary_component/test_records.json
@@ -35,7 +35,6 @@
 		"salary_component": "Leave Encashment",
 		"type": "Earning",
 		"is_payable": 1,
-		"is_tax_applicable": 1,
-		"is_additional_component": 1
+		"is_tax_applicable": 1
 	}
 ]
\ No newline at end of file
diff --git a/erpnext/hr/doctype/salary_component/test_salary_component.py b/erpnext/hr/doctype/salary_component/test_salary_component.py
index c13843a..965cc9e 100644
--- a/erpnext/hr/doctype/salary_component/test_salary_component.py
+++ b/erpnext/hr/doctype/salary_component/test_salary_component.py
@@ -19,7 +19,5 @@
 				"salary_component": component_name,
 				"type": args.get("type") or "Earning",
 				"is_payable": args.get("is_payable") or 1,
-				"is_tax_applicable": args.get("is_tax_applicable") or 1,
-				"is_additional_component": args.get("is_additional_component") or 1
+				"is_tax_applicable": args.get("is_tax_applicable") or 1
 			}).insert()
-			
\ No newline at end of file
diff --git a/erpnext/hr/doctype/salary_detail/salary_detail.json b/erpnext/hr/doctype/salary_detail/salary_detail.json
index 8f2649a..edf2786 100644
--- a/erpnext/hr/doctype/salary_detail/salary_detail.json
+++ b/erpnext/hr/doctype/salary_detail/salary_detail.json
@@ -226,41 +226,6 @@
    "collapsible": 0, 
    "columns": 0, 
    "default": "", 
-   "fetch_from": "salary_component.is_additional_component", 
-   "fetch_if_empty": 0, 
-   "fieldname": "is_additional_component", 
-   "fieldtype": "Check", 
-   "hidden": 1, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Is Additional Component", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
-  {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "default": "", 
    "fetch_from": "salary_component.variable_based_on_taxable_salary", 
    "fetch_if_empty": 0, 
    "fieldname": "variable_based_on_taxable_salary", 
@@ -330,6 +295,39 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fetch_if_empty": 0, 
+   "fieldname": "deduct_full_tax_on_selected_payroll_date", 
+   "fieldtype": "Check", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Deduct Full Tax on Selected Payroll Date", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 1, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 1, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
    "depends_on": "eval:doc.is_flexible_benefit != 1", 
    "fetch_if_empty": 0, 
    "fieldname": "section_break_2", 
@@ -573,6 +571,41 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "default": "", 
+   "fetch_from": "", 
+   "fetch_if_empty": 0, 
+   "fieldname": "additional_amount", 
+   "fieldtype": "Currency", 
+   "hidden": 1, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_global_search": 0, 
+   "in_list_view": 0, 
+   "in_standard_filter": 0, 
+   "label": "Additional Amount", 
+   "length": 0, 
+   "no_copy": 1, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 1, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 1, 
+   "remember_last_selected_value": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_in_quick_entry": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
    "depends_on": "eval:doc.parenttype=='Salary Slip' && doc.parentfield=='deductions' && doc.variable_based_on_taxable_salary == 1", 
    "fetch_if_empty": 0, 
    "fieldname": "tax_on_flexible_benefit", 
@@ -713,7 +746,7 @@
  "issingle": 0, 
  "istable": 1, 
  "max_attachments": 0, 
- "modified": "2019-04-16 19:09:31.726597", 
+ "modified": "2019-05-11 17:33:08.508653", 
  "modified_by": "Administrator", 
  "module": "HR", 
  "name": "Salary Detail", 
diff --git a/erpnext/hr/doctype/salary_slip/salary_slip.js b/erpnext/hr/doctype/salary_slip/salary_slip.js
index 4e9fcce..f430eee 100644
--- a/erpnext/hr/doctype/salary_slip/salary_slip.js
+++ b/erpnext/hr/doctype/salary_slip/salary_slip.js
@@ -11,7 +11,7 @@
 				{fieldname: 'salary_component', columns: 6},
 				{fieldname: 'amount', columns: 4}
 			];
-		})
+		});
 
 		frm.fields_dict["timesheets"].grid.get_field("time_sheet").get_query = function(){
 			return {
@@ -19,31 +19,39 @@
 					employee: frm.doc.employee
 				}
 			}
-		}
+		};
+
 		frm.set_query("salary_component", "earnings", function() {
 			return {
 				filters: {
 					type: "earning"
 				}
 			}
-		})
+		});
+
 		frm.set_query("salary_component", "deductions", function() {
 			return {
 				filters: {
 					type: "deduction"
 				}
 			}
-		})
+		});
+
+		frm.set_query("employee", function() {
+			return{
+				query: "erpnext.controllers.queries.employee_query"
+			}
+		});
 	},
 
-	start_date: function(frm, dt, dn){
+	start_date: function(frm){
 		if(frm.doc.start_date){
 			frm.trigger("set_end_date");
 		}
 	},
 
-	end_date: function(frm, dt, dn) {
-		get_emp_and_leave_details(frm.doc, dt, dn);
+	end_date: function(frm) {
+		frm.events.get_emp_and_leave_details(frm);
 	},
 
 	set_end_date: function(frm){
@@ -70,43 +78,54 @@
 
 	refresh: function(frm) {
 		frm.trigger("toggle_fields")
-		frm.trigger("toggle_reqd_fields")
-		var salary_detail_fields = ["formula", "abbr", "statistical_component", "is_tax_applicable",
-			"is_flexible_benefit", "variable_based_on_taxable_salary", "is_additional_component"]
+
+		var salary_detail_fields = ["formula", "abbr", "statistical_component", "variable_based_on_taxable_salary"];
 		cur_frm.fields_dict['earnings'].grid.set_column_disp(salary_detail_fields,false);
 		cur_frm.fields_dict['deductions'].grid.set_column_disp(salary_detail_fields,false);
 	},
 
-	salary_slip_based_on_timesheet: function(frm, dt, dn) {
+	salary_slip_based_on_timesheet: function(frm) {
 		frm.trigger("toggle_fields");
-		get_emp_and_leave_details(frm.doc, dt, dn);
+		frm.events.get_emp_and_leave_details(frm);
 	},
 
-	payroll_frequency: function(frm, dt, dn) {
+	payroll_frequency: function(frm) {
 		frm.trigger("toggle_fields");
 		frm.set_value('end_date', '');
 	},
 
-	employee: function(frm, dt, dn) {
-		get_emp_and_leave_details(frm.doc, dt, dn);
+	employee: function(frm) {
+		frm.events.get_emp_and_leave_details(frm);
+	},
+
+	leave_without_pay: function(frm){
+		if (frm.doc.employee && frm.doc.start_date && frm.doc.end_date) {
+			return frappe.call({
+				method: 'process_salary_based_on_leave',
+				doc: frm.doc,
+				args: {"lwp": frm.doc.leave_without_pay},
+				callback: function(r, rt) {
+					frm.refresh();
+				}
+			});
+		}
 	},
 
 	toggle_fields: function(frm) {
-		frm.toggle_display(['hourly_wages', 'timesheets'],
-			cint(frm.doc.salary_slip_based_on_timesheet)==1);
+		frm.toggle_display(['hourly_wages', 'timesheets'], cint(frm.doc.salary_slip_based_on_timesheet)===1);
 
 		frm.toggle_display(['payment_days', 'total_working_days', 'leave_without_pay'],
 			frm.doc.payroll_frequency!="");
-	}
-
-})
-
-frappe.ui.form.on('Salary Detail', {
-	earnings_remove: function(frm, dt, dn) {
-		calculate_all(frm.doc, dt, dn);
 	},
-	deductions_remove: function(frm, dt, dn) {
-		calculate_all(frm.doc, dt, dn);
+
+	get_emp_and_leave_details: function(frm) {
+		return frappe.call({
+			method: 'get_emp_and_leave_details',
+			doc: frm.doc,
+			callback: function(r, rt) {
+				frm.refresh();
+			}
+		});
 	}
 })
 
@@ -119,133 +138,29 @@
 	}
 });
 
-// Get leave details
-//---------------------------------------------------------------------
-var get_emp_and_leave_details = function(doc, dt, dn) {
-	return frappe.call({
-		method: 'get_emp_and_leave_details',
-		doc: locals[dt][dn],
-		callback: function(r, rt) {
-			cur_frm.refresh();
-			calculate_all(doc, dt, dn);
-		}
-	});
-}
-
-
-cur_frm.cscript.leave_without_pay = function(doc,dt,dn){
-	if (doc.employee && doc.start_date && doc.end_date) {
-		return $c_obj(doc, 'get_leave_details', {"lwp": doc.leave_without_pay}, function(r, rt) {
-			var doc = locals[dt][dn];
-			cur_frm.refresh();
-			calculate_all(doc, dt, dn);
-		});
-	}
-}
-
-var calculate_all = function(doc, dt, dn) {
-	calculate_earning_total(doc, dt, dn);
-	calculate_ded_total(doc, dt, dn);
-	calculate_net_pay(doc, dt, dn);
-}
-
-cur_frm.cscript.amount = function(doc,dt,dn){
-	var child = locals[dt][dn];
-	if(!doc.salary_structure){
-		frappe.model.set_value(dt,dn, "default_amount", child.amount)
-	}
-	calculate_all(doc, dt, dn);
-}
-
-cur_frm.cscript.depends_on_payment_days = function(doc,dt,dn){
-	calculate_earning_total(doc, dt, dn, true);
-	calculate_ded_total(doc, dt, dn, true);
-	calculate_net_pay(doc, dt, dn);
-	refresh_many(['amount','gross_pay', 'rounded_total', 'net_pay', 'loan_repayment']);
-};
-
-// Calculate earning total
-// ------------------------------------------------------------------------
-var calculate_earning_total = function(doc, dt, dn, reset_amount) {
-
-	var tbl = doc.earnings || [];
-	var total_earn = 0;
-	for(var i = 0; i < tbl.length; i++){
-		if(cint(tbl[i].depends_on_payment_days) == 1) {
-			tbl[i].amount =  Math.round(tbl[i].default_amount)*(flt(doc.payment_days) /
-				cint(doc.total_working_days)*100)/100;
-		} else if(reset_amount && tbl[i].default_amount) {
-			tbl[i].amount = tbl[i].default_amount;
-		}
-		if(!tbl[i].do_not_include_in_total) {
-			total_earn += flt(tbl[i].amount);
-
-		}
-	}
-	doc.gross_pay = total_earn;
-	refresh_many(['earnings', 'amount','gross_pay']);
-
-}
-
-// Calculate deduction total
-// ------------------------------------------------------------------------
-var calculate_ded_total = function(doc, dt, dn, reset_amount) {
-	var tbl = doc.deductions || [];
-	var total_ded = 0;
-	for(var i = 0; i < tbl.length; i++){
-		if(cint(tbl[i].depends_on_payment_days) == 1) {
-			tbl[i].amount = Math.round(tbl[i].default_amount)*(flt(doc.payment_days)/cint(doc.total_working_days)*100)/100;
-		} else if(reset_amount && tbl[i].default_amount) {
-			tbl[i].amount = tbl[i].default_amount;
-		}
-		if(!tbl[i].do_not_include_in_total) {
-			total_ded += flt(tbl[i].amount);
-		}
-	}
-	doc.total_deduction = total_ded;
-	refresh_many(['deductions', 'total_deduction']);
-}
-
-var calculate_net_pay = function(doc, dt, dn) {
-	doc.net_pay = flt(doc.gross_pay) - flt(doc.total_deduction);
-	doc.rounded_total = Math.round(doc.net_pay);
-	refresh_many(['net_pay', 'rounded_total']);
-}
-
-cur_frm.cscript.validate = function(doc, dt, dn) {
-	calculate_all(doc, dt, dn);
-}
-
-cur_frm.fields_dict.employee.get_query = function(doc,cdt,cdn) {
-	return{
-		query: "erpnext.controllers.queries.employee_query"
-	}
-}
-
 // calculate total working hours, earnings based on hourly wages and totals
-// ------------------------------------------------------------------------
 var total_work_hours = function(frm, dt, dn) {
-	frm.set_value('total_working_hours', 0);
-
+	var total_working_hours = 0.0;
 	$.each(frm.doc["timesheets"] || [], function(i, timesheet) {
-		frm.doc.total_working_hours += timesheet.working_hours;
+		total_working_hours += timesheet.working_hours;
 	});
-	frm.refresh_field('total_working_hours');
+	frm.set_value('total_working_hours', total_working_hours);
 
 	var wages_amount = frm.doc.total_working_hours * frm.doc.hour_rate;
 
 	frappe.db.get_value('Salary Structure', {'name': frm.doc.salary_structure}, 'salary_component', (r) => {
-		frm.set_value('gross_pay', 0);
-
+		var gross_pay = 0.0;
 		$.each(frm.doc["earnings"], function(i, earning) {
 			if (earning.salary_component == r.salary_component) {
 				earning.amount = wages_amount;
 				frm.refresh_fields('earnings');
 			}
-			frm.doc.gross_pay += earning.amount;
+			gross_pay += earning.amount;
 		});
+		frm.set_value('gross_pay', gross_pay);
 
-		frm.refresh_field('gross_pay');
-		calculate_net_pay(frm.doc, dt, dn);
+		frm.doc.net_pay = flt(frm.doc.gross_pay) - flt(frm.doc.total_deduction);
+		frm.doc.rounded_total = Math.round(frm.doc.net_pay);
+		refresh_many(['net_pay', 'rounded_total']);
 	});
 }
diff --git a/erpnext/hr/doctype/salary_slip/salary_slip.json b/erpnext/hr/doctype/salary_slip/salary_slip.json
index c9a5d87..681b008 100644
--- a/erpnext/hr/doctype/salary_slip/salary_slip.json
+++ b/erpnext/hr/doctype/salary_slip/salary_slip.json
@@ -1,1984 +1,1955 @@
 {
- "allow_copy": 0, 
- "allow_events_in_timeline": 0, 
- "allow_guest_to_view": 0, 
- "allow_import": 0, 
- "allow_rename": 0, 
- "beta": 0, 
- "creation": "2013-01-10 16:34:15", 
- "custom": 0, 
- "default_print_format": "", 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "Setup", 
- "editable_grid": 0, 
+ "allow_copy": 0,
+ "allow_events_in_timeline": 0,
+ "allow_guest_to_view": 0,
+ "allow_import": 0,
+ "allow_rename": 0,
+ "beta": 0,
+ "creation": "2013-01-10 16:34:15",
+ "custom": 0,
+ "default_print_format": "",
+ "docstatus": 0,
+ "doctype": "DocType",
+ "document_type": "Setup",
+ "editable_grid": 0,
  "fields": [
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "default": "Today", 
-   "fieldname": "posting_date", 
-   "fieldtype": "Date", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Posting Date", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "default": "Today",
+   "fieldname": "posting_date",
+   "fieldtype": "Date",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 1,
+   "in_standard_filter": 0,
+   "label": "Posting Date",
+   "length": 0,
+   "no_copy": 0,
+   "permlevel": 0,
+   "precision": "",
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 0,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 1,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "employee", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 1, 
-   "in_list_view": 1, 
-   "in_standard_filter": 1, 
-   "label": "Employee", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "employee", 
-   "oldfieldtype": "Link", 
-   "options": "Employee", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 1, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "employee",
+   "fieldtype": "Link",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 1,
+   "in_list_view": 1,
+   "in_standard_filter": 1,
+   "label": "Employee",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "employee",
+   "oldfieldtype": "Link",
+   "options": "Employee",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 0,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 1,
+   "search_index": 1,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.employee_name", 
-   "fieldname": "employee_name", 
-   "fieldtype": "Read Only", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 1, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Employee Name", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "employee_name", 
-   "oldfieldtype": "Data", 
-   "options": "", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fetch_from": "employee.employee_name",
+   "fieldname": "employee_name",
+   "fieldtype": "Read Only",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 1,
+   "in_list_view": 1,
+   "in_standard_filter": 0,
+   "label": "Employee Name",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "employee_name",
+   "oldfieldtype": "Data",
+   "options": "",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 0,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 1,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.department", 
-   "fieldname": "department", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 1, 
-   "label": "Department", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "department", 
-   "oldfieldtype": "Link", 
-   "options": "Department", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fetch_from": "employee.department",
+   "fieldname": "department",
+   "fieldtype": "Link",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 0,
+   "in_standard_filter": 1,
+   "label": "Department",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "department",
+   "oldfieldtype": "Link",
+   "options": "Department",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
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+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "depends_on": "eval:doc.designation", 
-   "fetch_from": "employee.designation", 
-   "fieldname": "designation", 
-   "fieldtype": "Read Only", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Designation", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "designation", 
-   "oldfieldtype": "Link", 
-   "options": "", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "depends_on": "eval:doc.designation",
+   "fetch_from": "employee.designation",
+   "fieldname": "designation",
+   "fieldtype": "Read Only",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 0,
+   "in_standard_filter": 0,
+   "label": "Designation",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "designation",
+   "oldfieldtype": "Link",
+   "options": "",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
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+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.branch", 
-   "fieldname": "branch", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 1, 
-   "label": "Branch", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "branch", 
-   "oldfieldtype": "Link", 
-   "options": "Branch", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fetch_from": "employee.branch",
+   "fieldname": "branch",
+   "fieldtype": "Link",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 0,
+   "in_standard_filter": 1,
+   "label": "Branch",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "branch",
+   "oldfieldtype": "Link",
+   "options": "Branch",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
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+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
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-   "fieldname": "column_break1", 
-   "fieldtype": "Column Break", 
-   "hidden": 0, 
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-   "in_filter": 0, 
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-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "column_break1",
+   "fieldtype": "Column Break",
+   "hidden": 0,
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+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 0,
+   "in_standard_filter": 0,
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldtype": "Column Break",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
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+   "remember_last_selected_value": 0,
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+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
+   "unique": 0,
    "width": "50%"
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
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-   "fieldname": "status", 
-   "fieldtype": "Select", 
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-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Status", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Draft\nSubmitted\nCancelled", 
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+   "allow_on_submit": 0,
+   "bold": 0,
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+   "columns": 0,
+   "fieldname": "status",
+   "fieldtype": "Select",
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+   "in_filter": 0,
+   "in_global_search": 0,
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+   "in_standard_filter": 0,
+   "label": "Status",
+   "length": 0,
+   "no_copy": 0,
+   "options": "Draft\nSubmitted\nCancelled",
+   "permlevel": 0,
+   "precision": "",
+   "print_hide": 0,
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+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
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-   "allow_on_submit": 0, 
-   "bold": 0, 
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-   "fieldtype": "Link", 
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-   "columns": 0, 
-   "fieldname": "rounded_total", 
-   "fieldtype": "Currency", 
-   "hidden": 0, 
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-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Rounded Total", 
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-   "options": "Company:company:default_currency", 
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-   "print_hide": 0, 
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-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
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+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "rounded_total",
+   "fieldtype": "Currency",
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+   "in_filter": 0,
+   "in_global_search": 0,
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+   "in_standard_filter": 0,
+   "label": "Rounded Total",
+   "length": 0,
+   "no_copy": 0,
+   "options": "Company:company:default_currency",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
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+   "report_hide": 0,
+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "section_break_55", 
-   "fieldtype": "Section Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
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+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "section_break_55",
+   "fieldtype": "Section Break",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
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+   "no_copy": 0,
+   "permlevel": 0,
+   "precision": "",
+   "print_hide": 0,
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+   "translatable": 0,
    "unique": 0
-  }, 
+  },
   {
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-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
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-   "description": "Net Pay (in words) will be visible once you save the Salary Slip.", 
-   "fieldname": "total_in_words", 
-   "fieldtype": "Data", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
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-   "in_filter": 0, 
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-   "in_standard_filter": 0, 
-   "label": "Total in words", 
-   "length": 0, 
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-   "oldfieldname": "net_pay_in_words", 
-   "oldfieldtype": "Data", 
-   "permlevel": 0, 
-   "print_hide": 0, 
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-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "description": "Net Pay (in words) will be visible once you save the Salary Slip.",
+   "fieldname": "total_in_words",
+   "fieldtype": "Data",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 0,
+   "in_standard_filter": 0,
+   "label": "Total in words",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "net_pay_in_words",
+   "oldfieldtype": "Data",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 1,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
+   "unique": 0
+  },
+  {
+   "allow_bulk_edit": 0,
+   "allow_in_quick_entry": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fetch_if_empty": 0,
+   "fieldname": "amended_from",
+   "fieldtype": "Link",
+   "hidden": 0,
+   "ignore_user_permissions": 1,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
+   "in_list_view": 0,
+   "in_standard_filter": 0,
+   "label": "Amended From",
+   "length": 0,
+   "no_copy": 1,
+   "oldfieldname": "amended_from",
+   "oldfieldtype": "Data",
+   "options": "Salary Slip",
+   "permlevel": 0,
+   "print_hide": 1,
+   "print_hide_if_no_value": 0,
+   "read_only": 1,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "translatable": 0,
    "unique": 0
   }
- ], 
- "has_web_view": 0, 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "icon": "fa fa-file-text", 
- "idx": 9, 
- "image_view": 0, 
- "in_create": 0, 
- "is_submittable": 1, 
- "issingle": 0, 
- "istable": 0, 
- "max_attachments": 0, 
- "modified": "2019-02-18 18:54:36.161027", 
- "modified_by": "Administrator", 
- "module": "HR", 
- "name": "Salary Slip", 
- "owner": "Administrator", 
+ ],
+ "has_web_view": 0,
+ "hide_heading": 0,
+ "hide_toolbar": 0,
+ "icon": "fa fa-file-text",
+ "idx": 9,
+ "image_view": 0,
+ "in_create": 0,
+ "is_submittable": 1,
+ "issingle": 0,
+ "istable": 0,
+ "max_attachments": 0,
+ "modified": "2019-05-13 13:10:14.524119",
+ "modified_by": "Administrator",
+ "module": "HR",
+ "name": "Salary Slip",
+ "owner": "Administrator",
  "permissions": [
   {
-   "amend": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "HR User", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "amend": 0,
+   "cancel": 0,
+   "create": 1,
+   "delete": 0,
+   "email": 1,
+   "export": 0,
+   "if_owner": 0,
+   "import": 0,
+   "permlevel": 0,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "HR User",
+   "set_user_permissions": 0,
+   "share": 1,
+   "submit": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 1, 
-   "cancel": 1, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "HR Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "amend": 1,
+   "cancel": 1,
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "export": 0,
+   "if_owner": 0,
+   "import": 0,
+   "permlevel": 0,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "HR Manager",
+   "set_user_permissions": 0,
+   "share": 1,
+   "submit": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 0, 
-   "cancel": 0, 
-   "create": 0, 
-   "delete": 0, 
-   "email": 0, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 0, 
-   "read": 1, 
-   "report": 0, 
-   "role": "Employee", 
-   "set_user_permissions": 0, 
-   "share": 0, 
-   "submit": 0, 
+   "amend": 0,
+   "cancel": 0,
+   "create": 0,
+   "delete": 0,
+   "email": 0,
+   "export": 0,
+   "if_owner": 0,
+   "import": 0,
+   "permlevel": 0,
+   "print": 0,
+   "read": 1,
+   "report": 0,
+   "role": "Employee",
+   "set_user_permissions": 0,
+   "share": 0,
+   "submit": 0,
    "write": 0
   }
- ], 
- "quick_entry": 0, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "show_name_in_global_search": 1, 
- "sort_field": "modified", 
- "sort_order": "DESC", 
- "timeline_field": "employee", 
- "title_field": "employee_name", 
- "track_changes": 0, 
- "track_seen": 0, 
+ ],
+ "quick_entry": 0,
+ "read_only": 0,
+ "read_only_onload": 0,
+ "show_name_in_global_search": 1,
+ "sort_field": "modified",
+ "sort_order": "DESC",
+ "timeline_field": "employee",
+ "title_field": "employee_name",
+ "track_changes": 0,
+ "track_seen": 0,
  "track_views": 0
 }
\ No newline at end of file
diff --git a/erpnext/hr/doctype/salary_slip/salary_slip.py b/erpnext/hr/doctype/salary_slip/salary_slip.py
index 5f6ddfc..125a8ae 100644
--- a/erpnext/hr/doctype/salary_slip/salary_slip.py
+++ b/erpnext/hr/doctype/salary_slip/salary_slip.py
@@ -3,7 +3,7 @@
 
 from __future__ import unicode_literals
 import frappe, erpnext
-import datetime
+import datetime, math
 
 from frappe.utils import add_days, cint, cstr, flt, getdate, rounded, date_diff, money_in_words, getdate
 from frappe.model.naming import make_autoname
@@ -14,7 +14,7 @@
 from erpnext.utilities.transaction_base import TransactionBase
 from frappe.utils.background_jobs import enqueue
 from erpnext.hr.doctype.additional_salary.additional_salary import get_additional_salary_component
-from erpnext.hr.utils import get_payroll_period
+from erpnext.hr.doctype.payroll_period.payroll_period import get_period_factor, get_payroll_period
 from erpnext.hr.doctype.employee_benefit_application.employee_benefit_application import get_benefit_component_amount
 from erpnext.hr.doctype.employee_benefit_claim.employee_benefit_claim import get_benefit_claim_amount, get_last_payroll_period_benefits
 
@@ -47,7 +47,6 @@
 		else:
 			self.get_leave_details(lwp = self.leave_without_pay)
 
-		# if self.salary_slip_based_on_timesheet or not self.net_pay:
 		self.calculate_net_pay()
 
 		company_currency = erpnext.get_company_currency(self.company)
@@ -59,148 +58,57 @@
 				frappe.msgprint(_("Total working hours should not be greater than max working hours {0}").
 								format(max_working_hours), alert=True)
 
+	def on_submit(self):
+		if self.net_pay < 0:
+			frappe.throw(_("Net Pay cannot be less than 0"))
+		else:
+			self.set_status()
+			self.update_status(self.name)
+			self.update_salary_slip_in_additional_salary()
+			if (frappe.db.get_single_value("HR Settings", "email_salary_slip_to_employee")) and not frappe.flags.via_payroll_entry:
+				self.email_salary_slip()
+
+	def on_cancel(self):
+		self.set_status()
+		self.update_status()
+		self.update_salary_slip_in_additional_salary()
+
+	def on_trash(self):
+		from frappe.model.naming import revert_series_if_last
+		revert_series_if_last(self.series, self.name)
+
+	def get_status(self):
+		if self.docstatus == 0:
+			status = "Draft"
+		elif self.docstatus == 1:
+			status = "Submitted"
+		elif self.docstatus == 2:
+			status = "Cancelled"
+		return status
+
 	def validate_dates(self):
 		if date_diff(self.end_date, self.start_date) < 0:
 			frappe.throw(_("To date cannot be before From date"))
 
-	def calculate_component_amounts(self):
-		if not getattr(self, '_salary_structure_doc', None):
-			self._salary_structure_doc = frappe.get_doc('Salary Structure', self.salary_structure)
-
-		data = self.get_data_for_eval()
-
-		for key in ('earnings', 'deductions'):
-			for struct_row in self._salary_structure_doc.get(key):
-				amount = self.eval_condition_and_formula(struct_row, data)
-				if amount and struct_row.statistical_component == 0:
-					self.update_component_row(struct_row, amount, key)
-
-				if key=="earnings" and struct_row.is_flexible_benefit == 1:
-					self.add_employee_flexi_benefits(struct_row)
-
-		additional_components = get_additional_salary_component(self.employee, self.start_date, self.end_date)
-		if additional_components:
-			for additional_component in additional_components:
-				additional_component = frappe._dict(additional_component)
-				amount = additional_component.amount
-				overwrite = additional_component.overwrite
-				key = "earnings"
-				if additional_component.type == "Deduction":
-					key = "deductions"
-				self.update_component_row(frappe._dict(additional_component.struct_row), amount, key, overwrite=overwrite)
-
-		self.get_last_payroll_period_benefit()
-
-		# Calculate variable_based_on_taxable_salary after all components updated in salary slip
-		for struct_row in self._salary_structure_doc.get("deductions"):
-			if struct_row.variable_based_on_taxable_salary == 1 and not struct_row.formula and not struct_row.amount:
-				tax_detail = self.calculate_variable_based_on_taxable_salary(struct_row.salary_component)
-				if tax_detail and tax_detail[1]:
-					self.update_component_row(frappe._dict(tax_detail[0]), tax_detail[1], "deductions", tax_detail[2], tax_detail[3])
-
-	def get_last_payroll_period_benefit(self):
-		payroll_period = get_payroll_period(self.start_date, self.end_date, self.company)
-		if payroll_period:
-			# Check for last payroll period
-			if (getdate(payroll_period.end_date) <= getdate(self.end_date)):
-				current_flexi_amount = 0
-				for d in self.get("earnings"):
-					if d.is_flexible_benefit == 1:
-						current_flexi_amount += d.amount
-				last_benefits = get_last_payroll_period_benefits(self.employee, self.start_date, self.end_date,
-					current_flexi_amount, payroll_period, self._salary_structure_doc)
-				if last_benefits:
-					for last_benefit in last_benefits:
-						last_benefit = frappe._dict(last_benefit)
-						amount = last_benefit.amount
-						self.update_component_row(frappe._dict(last_benefit.struct_row), amount, "earnings")
-
-	def add_employee_flexi_benefits(self, struct_row):
-		if frappe.db.get_value("Salary Component", struct_row.salary_component, "pay_against_benefit_claim") != 1:
-			benefit_component_amount = get_benefit_component_amount(self.employee, self.start_date, self.end_date, \
-				struct_row, self._salary_structure_doc, self.total_working_days, self.payroll_frequency)
-			if benefit_component_amount:
-				self.update_component_row(struct_row, benefit_component_amount, "earnings")
+	def check_existing(self):
+		if not self.salary_slip_based_on_timesheet:
+			ret_exist = frappe.db.sql("""select name from `tabSalary Slip`
+						where start_date = %s and end_date = %s and docstatus != 2
+						and employee = %s and name != %s""",
+						(self.start_date, self.end_date, self.employee, self.name))
+			if ret_exist:
+				self.employee = ''
+				frappe.throw(_("Salary Slip of employee {0} already created for this period").format(self.employee))
 		else:
-			benefit_claim_amount = get_benefit_claim_amount(self.employee, self.start_date, self.end_date, struct_row.salary_component)
-			if benefit_claim_amount:
-				self.update_component_row(struct_row, benefit_claim_amount, "earnings")
+			for data in self.timesheets:
+				if frappe.db.get_value('Timesheet', data.time_sheet, 'status') == 'Payrolled':
+					frappe.throw(_("Salary Slip of employee {0} already created for time sheet {1}").format(self.employee, data.time_sheet))
 
-	def update_component_row(self, struct_row, amount, key, benefit_tax=None, additional_tax=None, overwrite=1):
-		component_row = None
-		for d in self.get(key):
-			if d.salary_component == struct_row.salary_component:
-				component_row = d
-
-		if not component_row:
-			self.append(key, {
-				'amount': amount,
-				'default_amount': amount,
-				'depends_on_payment_days' : struct_row.depends_on_payment_days,
-				'salary_component' : struct_row.salary_component,
-				'abbr' : struct_row.abbr,
-				'do_not_include_in_total' : struct_row.do_not_include_in_total,
-				'is_tax_applicable': struct_row.is_tax_applicable,
-				'is_flexible_benefit': struct_row.is_flexible_benefit,
-				'variable_based_on_taxable_salary': struct_row.variable_based_on_taxable_salary,
-				'is_additional_component': struct_row.is_additional_component,
-				'tax_on_flexible_benefit': benefit_tax,
-				'tax_on_additional_salary': additional_tax
-			})
-		else:
-			if not overwrite:
-				amount += struct_row.get("default_amount", 0)
-
-			component_row.default_amount = amount
-			component_row.amount = amount
-
-			component_row.tax_on_flexible_benefit = benefit_tax
-			component_row.tax_on_additional_salary = additional_tax
-
-	def eval_condition_and_formula(self, d, data):
-		try:
-			condition = d.condition.strip() if d.condition else None
-			if condition:
-				if not frappe.safe_eval(condition, self.whitelisted_globals, data):
-					return None
-			amount = d.amount
-			if d.amount_based_on_formula:
-				formula = d.formula.strip() if d.formula else None
-				if formula:
-					amount = rounded(frappe.safe_eval(formula, self.whitelisted_globals, data))
-			if amount:
-				data[d.abbr] = amount
-
-			return amount
-
-		except NameError as err:
-			frappe.throw(_("Name error: {0}".format(err)))
-		except SyntaxError as err:
-			frappe.throw(_("Syntax error in formula or condition: {0}".format(err)))
-		except Exception as e:
-			frappe.throw(_("Error in formula or condition: {0}".format(e)))
-			raise
-
-	def get_data_for_eval(self):
-		'''Returns data for evaluating formula'''
-		data = frappe._dict()
-
-		data.update(frappe.get_doc("Salary Structure Assignment",
-			{"employee": self.employee, "salary_structure": self.salary_structure}).as_dict())
-
-		data.update(frappe.get_doc("Employee", self.employee).as_dict())
-		data.update(self.as_dict())
-
-		# set values for components
-		salary_components = frappe.get_all("Salary Component", fields=["salary_component_abbr"])
-		for sc in salary_components:
-			data.setdefault(sc.salary_component_abbr, 0)
-
-		for key in ('earnings', 'deductions'):
-			for d in self.get(key):
-				data[d.abbr] = d.amount
-
-		return data
+	def get_date_details(self):
+		if not self.end_date:
+			date_details = get_start_end_dates(self.payroll_frequency, self.start_date or self.posting_date)
+			self.start_date = date_details.start_date
+			self.end_date = date_details.end_date
 
 	def get_emp_and_leave_details(self):
 		'''First time, load all the components from salary structure'''
@@ -235,12 +143,6 @@
 					'working_hours': data.total_hours
 				})
 
-	def get_date_details(self):
-		if not self.end_date:
-			date_details = get_start_end_dates(self.payroll_frequency, self.start_date or self.posting_date)
-			self.start_date = date_details.start_date
-			self.end_date = date_details.end_date
-
 	def check_sal_struct(self, joining_date, relieving_date):
 		cond = """and sa.employee=%(employee)s and (sa.from_date <= %(start_date)s or
 				sa.from_date <= %(end_date)s or sa.from_date <= %(joining_date)s)"""
@@ -279,43 +181,18 @@
 
 		make_salary_slip(self._salary_structure_doc.name, self)
 
-	def process_salary_structure(self):
-		'''Calculate salary after salary structure details have been updated'''
-		if not self.salary_slip_based_on_timesheet:
-			self.get_date_details()
-		self.pull_emp_details()
-		self.get_leave_details()
-		self.calculate_net_pay()
-
-	def add_earning_for_hourly_wages(self, doc, salary_component, amount):
-		row_exists = False
-		for row in doc.earnings:
-			if row.salary_component == salary_component:
-				row.amount = amount
-				row_exists = True
-				break
-
-		if not row_exists:
-			wages_row = {
-				"salary_component": salary_component,
-				"abbr": frappe.db.get_value("Salary Component", salary_component, "salary_component_abbr"),
-				"amount": self.hour_rate * self.total_working_hours
-			}
-			doc.append('earnings', wages_row)
-
-	def pull_emp_details(self):
-		emp = frappe.db.get_value("Employee", self.employee, ["bank_name", "bank_ac_no"], as_dict=1)
-		if emp:
-			self.bank_name = emp.bank_name
-			self.bank_account_no = emp.bank_ac_no
-
-	def get_leave_details(self, joining_date=None, relieving_date=None, lwp=None):
+	def get_leave_details(self, joining_date=None, relieving_date=None, lwp=None, for_preview=0):
 		if not joining_date:
 			joining_date, relieving_date = frappe.db.get_value("Employee", self.employee,
 				["date_of_joining", "relieving_date"])
 
-		holidays = self.get_holidays_for_employee(self.start_date, self.end_date)
 		working_days = date_diff(self.end_date, self.start_date) + 1
+		if for_preview:
+			self.total_working_days = working_days
+			self.payment_days = working_days
+			return
+
+		holidays = self.get_holidays_for_employee(self.start_date, self.end_date)
 		actual_lwp = self.calculate_lwp(holidays, working_days)
 		if not cint(frappe.db.get_value("HR Settings", None, "include_holidays_in_total_working_days")):
 			working_days -= len(holidays)
@@ -392,21 +269,425 @@
 				lwp = cint(leave[0][1]) and (lwp + 0.5) or (lwp + 1)
 		return lwp
 
-	def check_existing(self):
-		if not self.salary_slip_based_on_timesheet:
-			ret_exist = frappe.db.sql("""select name from `tabSalary Slip`
-						where start_date = %s and end_date = %s and docstatus != 2
-						and employee = %s and name != %s""",
-						(self.start_date, self.end_date, self.employee, self.name))
-			if ret_exist:
-				self.employee = ''
-				frappe.throw(_("Salary Slip of employee {0} already created for this period").format(self.employee))
-		else:
-			for data in self.timesheets:
-				if frappe.db.get_value('Timesheet', data.time_sheet, 'status') == 'Payrolled':
-					frappe.throw(_("Salary Slip of employee {0} already created for time sheet {1}").format(self.employee, data.time_sheet))
+	def add_earning_for_hourly_wages(self, doc, salary_component, amount):
+		row_exists = False
+		for row in doc.earnings:
+			if row.salary_component == salary_component:
+				row.amount = amount
+				row_exists = True
+				break
 
-	def sum_components(self, component_type, total_field, precision):
+		if not row_exists:
+			wages_row = {
+				"salary_component": salary_component,
+				"abbr": frappe.db.get_value("Salary Component", salary_component, "salary_component_abbr"),
+				"amount": self.hour_rate * self.total_working_hours
+			}
+			doc.append('earnings', wages_row)
+
+	def calculate_net_pay(self):
+		if self.salary_structure:
+			self.calculate_component_amounts()
+
+		self.gross_pay = self.get_component_totals("earnings")
+		self.total_deduction = self.get_component_totals("deductions")
+
+		self.set_loan_repayment()
+
+		self.net_pay = 0
+		if self.total_working_days:
+			self.net_pay = flt(self.gross_pay) - (flt(self.total_deduction) + flt(self.total_loan_repayment))
+
+		self.rounded_total = rounded(self.net_pay)
+
+		if self.net_pay < 0:
+			frappe.throw(_("Net Pay cannnot be negative"))
+
+	def calculate_component_amounts(self):
+		if not getattr(self, '_salary_structure_doc', None):
+			self._salary_structure_doc = frappe.get_doc('Salary Structure', self.salary_structure)
+
+		payroll_period = get_payroll_period(self.start_date, self.end_date, self.company)
+
+		self.add_structure_components()
+		self.add_employee_benefits(payroll_period)
+		self.add_additional_salary_components()
+		self.add_tax_components(payroll_period)
+
+	def add_structure_components(self):
+		data = self.get_data_for_eval()
+		for key in ('earnings', 'deductions'):
+			for struct_row in self._salary_structure_doc.get(key):
+				amount = self.eval_condition_and_formula(struct_row, data)
+				if amount and struct_row.statistical_component == 0:
+					self.update_component_row(struct_row, amount, key)
+
+	def get_data_for_eval(self):
+		'''Returns data for evaluating formula'''
+		data = frappe._dict()
+
+		data.update(frappe.get_doc("Salary Structure Assignment",
+			{"employee": self.employee, "salary_structure": self.salary_structure}).as_dict())
+
+		data.update(frappe.get_doc("Employee", self.employee).as_dict())
+		data.update(self.as_dict())
+
+		# set values for components
+		salary_components = frappe.get_all("Salary Component", fields=["salary_component_abbr"])
+		for sc in salary_components:
+			data.setdefault(sc.salary_component_abbr, 0)
+
+		for key in ('earnings', 'deductions'):
+			for d in self.get(key):
+				data[d.abbr] = d.amount
+
+		return data
+
+	def eval_condition_and_formula(self, d, data):
+		try:
+			condition = d.condition.strip() if d.condition else None
+			if condition:
+				if not frappe.safe_eval(condition, self.whitelisted_globals, data):
+					return None
+			amount = d.amount
+			if d.amount_based_on_formula:
+				formula = d.formula.strip() if d.formula else None
+				if formula:
+					amount = flt(frappe.safe_eval(formula, self.whitelisted_globals, data), d.precision("amount"))
+			if amount:
+				data[d.abbr] = amount
+
+			return amount
+
+		except NameError as err:
+			frappe.throw(_("Name error: {0}".format(err)))
+		except SyntaxError as err:
+			frappe.throw(_("Syntax error in formula or condition: {0}".format(err)))
+		except Exception as e:
+			frappe.throw(_("Error in formula or condition: {0}".format(e)))
+			raise
+
+	def add_employee_benefits(self, payroll_period):
+		for struct_row in self._salary_structure_doc.get("earnings"):
+			if struct_row.is_flexible_benefit == 1:
+				if frappe.db.get_value("Salary Component", struct_row.salary_component, "pay_against_benefit_claim") != 1:
+					benefit_component_amount = get_benefit_component_amount(self.employee, self.start_date, self.end_date,
+						struct_row.salary_component, self._salary_structure_doc, self.payroll_frequency, payroll_period)
+					if benefit_component_amount:
+						self.update_component_row(struct_row, benefit_component_amount, "earnings")
+				else:
+					benefit_claim_amount = get_benefit_claim_amount(self.employee, self.start_date, self.end_date, struct_row.salary_component)
+					if benefit_claim_amount:
+						self.update_component_row(struct_row, benefit_claim_amount, "earnings")
+
+		self.adjust_benefits_in_last_payroll_period(payroll_period)
+
+	def adjust_benefits_in_last_payroll_period(self, payroll_period):
+		if payroll_period:
+			if (getdate(payroll_period.end_date) <= getdate(self.end_date)):
+				last_benefits = get_last_payroll_period_benefits(self.employee, self.start_date, self.end_date,
+					payroll_period, self._salary_structure_doc)
+				if last_benefits:
+					for last_benefit in last_benefits:
+						last_benefit = frappe._dict(last_benefit)
+						amount = last_benefit.amount
+						self.update_component_row(frappe._dict(last_benefit.struct_row), amount, "earnings")
+
+	def add_additional_salary_components(self):
+		additional_components = get_additional_salary_component(self.employee, self.start_date, self.end_date)
+		if additional_components:
+			for additional_component in additional_components:
+				amount = additional_component.amount
+				overwrite = additional_component.overwrite
+				key = "earnings" if additional_component.type == "Earning" else "deductions"
+				self.update_component_row(frappe._dict(additional_component.struct_row), amount, key, overwrite=overwrite)
+
+	def add_tax_components(self, payroll_period):
+		# Calculate variable_based_on_taxable_salary after all components updated in salary slip
+		struct_tax_components = [d.salary_component for d in self._salary_structure_doc.get("deductions")
+			if d.variable_based_on_taxable_salary == 1 and not d.formula and not d.amount]
+
+		if not struct_tax_components:
+			struct_tax_components = [d.name for d in
+				frappe.get_all("Salary Component", filters={"variable_based_on_taxable_salary": 1})]
+
+		for d in struct_tax_components:
+			tax_amount = self.calculate_variable_based_on_taxable_salary(d, payroll_period)
+			tax_row = self.get_salary_slip_row(d)
+			self.update_component_row(tax_row, tax_amount, "deductions")
+
+	def update_component_row(self, struct_row, amount, key, overwrite=1):
+		component_row = None
+		for d in self.get(key):
+			if d.salary_component == struct_row.salary_component:
+				component_row = d
+
+		if not component_row:
+			if amount:
+				self.append(key, {
+					'amount': amount,
+					'default_amount': amount if not struct_row.get("is_additional_component") else 0,
+					'depends_on_payment_days' : struct_row.depends_on_payment_days,
+					'salary_component' : struct_row.salary_component,
+					'abbr' : struct_row.abbr,
+					'do_not_include_in_total' : struct_row.do_not_include_in_total,
+					'is_tax_applicable': struct_row.is_tax_applicable,
+					'is_flexible_benefit': struct_row.is_flexible_benefit,
+					'variable_based_on_taxable_salary': struct_row.variable_based_on_taxable_salary,
+					'deduct_full_tax_on_selected_payroll_date': struct_row.deduct_full_tax_on_selected_payroll_date,
+					'additional_amount': amount if struct_row.get("is_additional_component") else 0
+				})
+		else:
+			if struct_row.get("is_additional_component"):
+				if overwrite:
+					component_row.additional_amount = amount - component_row.get("default_amount", 0)
+				else:
+					component_row.additional_amount = amount
+
+				if not overwrite:
+					amount += component_row.default_amount
+
+			component_row.amount = amount
+			component_row.deduct_full_tax_on_selected_payroll_date = struct_row.deduct_full_tax_on_selected_payroll_date
+
+	def calculate_variable_based_on_taxable_salary(self, tax_component, payroll_period):
+		if not payroll_period:
+			frappe.msgprint(_("Start and end dates not in a valid Payroll Period, cannot calculate {0}.")
+				.format(tax_component))
+			return
+
+		# Deduct taxes forcefully for unsubmitted tax exemption proof and unclaimed benefits in the last period
+		if payroll_period.end_date <= getdate(self.end_date):
+			self.deduct_tax_for_unsubmitted_tax_exemption_proof = 1
+			self.deduct_tax_for_unclaimed_employee_benefits = 1
+
+		return self.calculate_variable_tax(payroll_period, tax_component)
+
+	def calculate_variable_tax(self, payroll_period, tax_component):
+		# get remaining numbers of sub-period (period for which one salary is processed)
+		remaining_sub_periods = get_period_factor(self.employee,
+			self.start_date, self.end_date, self.payroll_frequency, payroll_period)[1]
+
+		# get taxable_earnings, paid_taxes for previous period
+		previous_taxable_earnings = self.get_taxable_earnings_for_prev_period(payroll_period.start_date, self.start_date)
+		previous_total_paid_taxes = self.get_tax_paid_in_period(payroll_period.start_date, self.start_date, tax_component)
+
+		# get taxable_earnings for current period (all days)
+		current_taxable_earnings = self.get_taxable_earnings()
+		future_structured_taxable_earnings = current_taxable_earnings.taxable_earnings * (math.ceil(remaining_sub_periods) - 1)
+
+		# get taxable_earnings, addition_earnings for current actual payment days
+		self.set_component_amounts_based_on_payment_days()
+		current_taxable_earnings_for_payment_days = self.get_taxable_earnings()
+		current_structured_taxable_earnings = current_taxable_earnings_for_payment_days.taxable_earnings
+		current_additional_earnings = current_taxable_earnings_for_payment_days.additional_income
+		current_additional_earnings_with_full_tax = current_taxable_earnings_for_payment_days.additional_income_with_full_tax
+
+		# Get taxable unclaimed benefits
+		unclaimed_taxable_benefits = 0
+		if self.deduct_tax_for_unclaimed_employee_benefits:
+			unclaimed_taxable_benefits = self.calculate_unclaimed_taxable_benefits(payroll_period)
+			unclaimed_taxable_benefits += current_taxable_earnings_for_payment_days.flexi_benefits
+
+		# Total exemption amount based on tax exemption declaration
+		total_exemption_amount, other_incomes = self.get_total_exemption_amount_and_other_incomes(payroll_period)
+
+		# Total taxable earnings including additional and other incomes
+		total_taxable_earnings = previous_taxable_earnings + current_structured_taxable_earnings + future_structured_taxable_earnings \
+			+ current_additional_earnings + other_incomes + unclaimed_taxable_benefits - total_exemption_amount
+
+		# Total taxable earnings without additional earnings with full tax
+		total_taxable_earnings_without_full_tax_addl_components = total_taxable_earnings - current_additional_earnings_with_full_tax
+
+		# Structured tax amount
+		total_structured_tax_amount = self.calculate_tax_by_tax_slab(payroll_period, total_taxable_earnings_without_full_tax_addl_components)
+
+		current_structured_tax_amount = (total_structured_tax_amount - previous_total_paid_taxes) / remaining_sub_periods
+
+		# Total taxable earnings with additional earnings with full tax
+		full_tax_on_additional_earnings = 0.0
+		if current_additional_earnings_with_full_tax:
+			total_tax_amount = self.calculate_tax_by_tax_slab(payroll_period, total_taxable_earnings)
+			full_tax_on_additional_earnings = total_tax_amount - total_structured_tax_amount
+
+		current_tax_amount = current_structured_tax_amount + full_tax_on_additional_earnings
+		if flt(current_tax_amount) < 0:
+			current_tax_amount = 0
+
+		return current_tax_amount
+
+	def get_taxable_earnings_for_prev_period(self, start_date, end_date):
+		taxable_earnings = frappe.db.sql("""
+			select sum(sd.amount)
+			from
+				`tabSalary Detail` sd join `tabSalary Slip` ss on sd.parent=ss.name
+			where
+				sd.parentfield='earnings'
+				and sd.is_tax_applicable=1
+				and is_flexible_benefit=0
+				and ss.docstatus=1
+				and ss.employee=%(employee)s
+				and ss.start_date between %(from_date)s and %(to_date)s
+				and ss.end_date between %(from_date)s and %(to_date)s
+			""", {
+				"employee": self.employee,
+				"from_date": start_date,
+				"to_date": end_date
+			})
+		return flt(taxable_earnings[0][0]) if taxable_earnings else 0
+
+	def get_tax_paid_in_period(self, start_date, end_date, tax_component):
+		# find total_tax_paid, tax paid for benefit, additional_salary
+		total_tax_paid = flt(frappe.db.sql("""
+			select
+				sum(sd.amount)
+			from
+				`tabSalary Detail` sd join `tabSalary Slip` ss on sd.parent=ss.name
+			where
+				sd.parentfield='deductions'
+				and sd.salary_component=%(salary_component)s
+				and sd.variable_based_on_taxable_salary=1
+				and ss.docstatus=1
+				and ss.employee=%(employee)s
+				and ss.start_date between %(from_date)s and %(to_date)s
+				and ss.end_date between %(from_date)s and %(to_date)s
+		""", {
+			"salary_component": tax_component,
+			"employee": self.employee,
+			"from_date": start_date,
+			"to_date": end_date
+		})[0][0])
+
+		return total_tax_paid
+
+	def get_taxable_earnings(self, only_flexi=0):
+		taxable_earnings = 0
+		additional_income = 0
+		additional_income_with_full_tax = 0
+		flexi_benefits = 0
+
+		for earning in self.earnings:
+			if earning.is_tax_applicable:
+				if flt(earning.additional_amount):
+					taxable_earnings += (earning.amount - earning.additional_amount)
+					additional_income += earning.additional_amount
+					if earning.deduct_full_tax_on_selected_payroll_date:
+						additional_income_with_full_tax += earning.additional_amount
+					continue
+
+				if earning.is_flexible_benefit:
+					flexi_benefits += earning.amount
+				else:
+					taxable_earnings += earning.amount
+
+		return frappe._dict({
+			"taxable_earnings": taxable_earnings,
+			"additional_income": additional_income,
+			"additional_income_with_full_tax": additional_income_with_full_tax,
+			"flexi_benefits": flexi_benefits
+		})
+
+	def calculate_unclaimed_taxable_benefits(self, payroll_period):
+		# get total sum of benefits paid
+		total_benefits_paid = flt(frappe.db.sql("""
+			select sum(sd.amount)
+			from `tabSalary Detail` sd join `tabSalary Slip` ss on sd.parent=ss.name
+			where
+				sd.parentfield='earnings'
+				and sd.is_tax_applicable=1
+				and is_flexible_benefit=1
+				and ss.docstatus=1
+				and ss.employee=%(employee)s
+				and ss.start_date between %(start_date)s and %(end_date)s
+				and ss.end_date between %(start_date)s and %(end_date)s
+		""", {
+			"employee": self.employee,
+			"start_date": payroll_period.start_date,
+			"end_date": self.start_date
+		})[0][0])
+
+		# get total benefits claimed
+		total_benefits_claimed = flt(frappe.db.sql("""
+			select sum(claimed_amount)
+			from `tabEmployee Benefit Claim`
+			where
+				docstatus=1
+				and employee=%s
+				and claim_date between %s and %s
+		""", (self.employee, payroll_period.start_date, self.end_date))[0][0])
+
+		return total_benefits_paid - total_benefits_claimed
+
+	def get_total_exemption_amount_and_other_incomes(self, payroll_period):
+		total_exemption_amount, other_incomes = 0, 0
+		if self.deduct_tax_for_unsubmitted_tax_exemption_proof:
+			exemption_proof = frappe.db.get_value("Employee Tax Exemption Proof Submission",
+				{"employee": self.employee, "payroll_period": payroll_period.name, "docstatus": 1},
+				["exemption_amount", "income_from_other_sources"])
+			if exemption_proof:
+				total_exemption_amount, other_incomes = exemption_proof
+		else:
+			declaration = frappe.db.get_value("Employee Tax Exemption Declaration",
+				{"employee": self.employee, "payroll_period": payroll_period.name, "docstatus": 1},
+				["total_exemption_amount", "income_from_other_sources"])
+			if declaration:
+				total_exemption_amount, other_incomes = declaration
+
+		return total_exemption_amount, other_incomes
+
+	def calculate_tax_by_tax_slab(self, payroll_period, annual_taxable_earning):
+		payroll_period_obj = frappe.get_doc("Payroll Period", payroll_period)
+		annual_taxable_earning -= flt(payroll_period_obj.standard_tax_exemption_amount)
+		data = self.get_data_for_eval()
+		data.update({"annual_taxable_earning": annual_taxable_earning})
+		taxable_amount = 0
+		for slab in payroll_period_obj.taxable_salary_slabs:
+			if slab.condition and not self.eval_tax_slab_condition(slab.condition, data):
+				continue
+			if not slab.to_amount and annual_taxable_earning > slab.from_amount:
+				taxable_amount += (annual_taxable_earning - slab.from_amount) * slab.percent_deduction *.01
+				continue
+			if annual_taxable_earning > slab.from_amount and annual_taxable_earning < slab.to_amount:
+				taxable_amount += (annual_taxable_earning - slab.from_amount) * slab.percent_deduction *.01
+			elif annual_taxable_earning > slab.from_amount and annual_taxable_earning > slab.to_amount:
+				taxable_amount += (slab.to_amount - slab.from_amount) * slab.percent_deduction * .01
+		return taxable_amount
+
+	def eval_tax_slab_condition(self, condition, data):
+		try:
+			condition = condition.strip()
+			if condition:
+				return frappe.safe_eval(condition, self.whitelisted_globals, data)
+		except NameError as err:
+			frappe.throw(_("Name error: {0}".format(err)))
+		except SyntaxError as err:
+			frappe.throw(_("Syntax error in condition: {0}".format(err)))
+		except Exception as e:
+			frappe.throw(_("Error in formula or condition: {0}".format(e)))
+			raise
+
+	def get_salary_slip_row(self, salary_component):
+		component = frappe.get_doc("Salary Component", salary_component)
+		# Data for update_component_row
+		struct_row = frappe._dict()
+		struct_row['depends_on_payment_days'] = component.depends_on_payment_days
+		struct_row['salary_component'] = component.name
+		struct_row['abbr'] = component.salary_component_abbr
+		struct_row['do_not_include_in_total'] = component.do_not_include_in_total
+		struct_row['is_tax_applicable'] = component.is_tax_applicable
+		struct_row['is_flexible_benefit'] = component.is_flexible_benefit
+		struct_row['variable_based_on_taxable_salary'] = component.variable_based_on_taxable_salary
+		return struct_row
+
+	def get_component_totals(self, component_type):
+		total = 0.0
+		for d in self.get(component_type):
+			if not d.do_not_include_in_total:
+				d.amount = flt(d.amount, d.precision("amount"))
+				total += d.amount
+		return total
+
+	def set_component_amounts_based_on_payment_days(self):
 		joining_date, relieving_date = frappe.db.get_value("Employee", self.employee,
 			["date_of_joining", "relieving_date"])
 
@@ -416,51 +697,24 @@
 		if not joining_date:
 			frappe.throw(_("Please set the Date Of Joining for employee {0}").format(frappe.bold(self.employee_name)))
 
-		for d in self.get(component_type):
-			if (self.salary_structure and
-				cint(d.depends_on_payment_days) and cint(self.total_working_days) and
-				(not
-				    self.salary_slip_based_on_timesheet or
-					getdate(self.start_date) < joining_date or
-					getdate(self.end_date) > relieving_date
-				)):
+		for component_type in ("earnings", "deductions"):
+			for d in self.get(component_type):
+				if (self.salary_structure and
+					cint(d.depends_on_payment_days) and cint(self.total_working_days) and
+					(not self.salary_slip_based_on_timesheet or
+						getdate(self.start_date) < joining_date or
+						getdate(self.end_date) > relieving_date
+					)):
 
-				d.amount = rounded(
-					(flt(d.default_amount, precision) * flt(self.payment_days)
-					/ cint(self.total_working_days)), self.precision("amount", component_type)
-				)
+					d.amount = flt(
+						(flt(d.default_amount + d.additional_amount) * flt(self.payment_days)
+						/ cint(self.total_working_days))
+					, d.precision("amount"))
 
-			elif not self.payment_days and not self.salary_slip_based_on_timesheet and \
-				cint(d.depends_on_payment_days):
-				d.amount = 0
-			elif not d.amount:
-				d.amount = d.default_amount
-			if not d.do_not_include_in_total:
-				self.set(total_field, self.get(total_field) + flt(d.amount, precision))
-
-	def calculate_net_pay(self):
-		if self.salary_structure:
-			self.calculate_component_amounts()
-
-		disable_rounded_total = cint(frappe.db.get_value("Global Defaults", None, "disable_rounded_total"))
-		precision = frappe.defaults.get_global_default("currency_precision")
-		self.total_deduction = 0
-		self.gross_pay = 0
-
-		self.sum_components('earnings', 'gross_pay', precision)
-		self.sum_components('deductions', 'total_deduction', precision)
-
-		self.set_loan_repayment()
-
-		self.net_pay = 0
-		if self.total_working_days:
-			self.net_pay = flt(self.gross_pay) - (flt(self.total_deduction) + flt(self.total_loan_repayment))
-
-		self.rounded_total = rounded(self.net_pay,
-			self.precision("net_pay") if disable_rounded_total else 0)
-
-		if self.net_pay < 0:
-			frappe.throw(_("Net Pay cannnot be negative"))
+				elif not self.payment_days and not self.salary_slip_based_on_timesheet and cint(d.depends_on_payment_days):
+					d.amount = 0
+				elif not d.amount:
+					d.amount = d.default_amount + d.additional_amount
 
 	def set_loan_repayment(self):
 		self.set('loans', [])
@@ -492,25 +746,6 @@
 				l.repay_from_salary = 1 and l.docstatus = 1 and l.applicant = %s""",
 			(self.start_date, self.end_date, self.employee), as_dict=True) or []
 
-	def on_submit(self):
-		if self.net_pay < 0:
-			frappe.throw(_("Net Pay cannot be less than 0"))
-		else:
-			self.set_status()
-			self.update_status(self.name)
-			self.update_salary_slip_in_additional_salary()
-			if (frappe.db.get_single_value("HR Settings", "email_salary_slip_to_employee")) and not frappe.flags.via_payroll_entry:
-				self.email_salary_slip()
-
-	def on_cancel(self):
-		self.set_status()
-		self.update_status()
-		self.update_salary_slip_in_additional_salary()
-
-	def on_trash(self):
-		from frappe.model.naming import revert_series_if_last
-		revert_series_if_last(self.series, self.name)
-
 	def update_salary_slip_in_additional_salary(self):
 		salary_slip = self.name if self.docstatus==1 else None
 		frappe.db.sql("""
@@ -559,289 +794,24 @@
 			status = self.get_status()
 		self.db_set("status", status)
 
-	def get_status(self):
-		if self.docstatus == 0:
-			status = "Draft"
-		elif self.docstatus == 1:
-			status = "Submitted"
-		elif self.docstatus == 2:
-			status = "Cancelled"
-		return status
 
-	def calculate_variable_based_on_taxable_salary(self, tax_component):
-		payroll_period = get_payroll_period(self.start_date, self.end_date, self.company)
-		if not payroll_period:
-			frappe.msgprint(_("Start and end dates not in a valid Payroll Period, cannot calculate {0}.")
-				.format(tax_component))
-			return False
-		if payroll_period.end_date <= getdate(self.end_date):
-			if not self.deduct_tax_for_unsubmitted_tax_exemption_proof or not\
-				self.deduct_tax_for_unclaimed_employee_benefits:
-				frappe.throw(_("You have to Deduct Tax for Unsubmitted Tax Exemption Proof and Unclaimed \
-					Employee Benefits in the last Salary Slip of Payroll Period"))
-		# calc prorata tax to be applied
-		return self.calculate_variable_tax(tax_component, payroll_period)
+	def process_salary_structure(self, for_preview=0):
+		'''Calculate salary after salary structure details have been updated'''
+		if not self.salary_slip_based_on_timesheet:
+			self.get_date_details()
+		self.pull_emp_details()
+		self.get_leave_details(for_preview=for_preview)
+		self.calculate_net_pay()
 
-	def calculate_variable_tax(self, tax_component, payroll_period):
-		annual_taxable_earning, period_factor = 0, 0
-		pro_rata_tax_paid, additional_tax_paid,  benefit_tax_paid = 0.0, 0.0, 0.0
-		unclaimed_earning, unclaimed_benefit, additional_income = 0.0, 0.0, 0.0
+	def pull_emp_details(self):
+		emp = frappe.db.get_value("Employee", self.employee, ["bank_name", "bank_ac_no"], as_dict=1)
+		if emp:
+			self.bank_name = emp.bank_name
+			self.bank_account_no = emp.bank_ac_no
 
-		# get taxable_earning, additional_income in this slip
-		taxable_earning = self.get_taxable_earnings()
-		if self.deduct_tax_for_unclaimed_employee_benefits:
-			# get all untaxed benefits till date, pass amount to be taxed by later methods
-			unclaimed_benefit = self.calculate_unclaimed_taxable_benefit(payroll_period)
-			# flexi's excluded from monthly tax, add flexis in this slip to unclaimed_benefit
-			unclaimed_benefit += self.get_taxable_earnings(only_flexi=True)["taxable_earning"]
-		if self.deduct_tax_for_unsubmitted_tax_exemption_proof:
-			# do not consider exemption, calc tax to be paid for the period till date
-			# considering prorata taxes paid and proofs submitted
-			unclaimed_earning = self.calculate_unclaimed_taxable_earning(payroll_period, tax_component)
-			earning_in_period = taxable_earning["taxable_earning"] + unclaimed_earning
-			period_factor = self.get_period_factor(payroll_period.start_date, payroll_period.end_date,
-				payroll_period.start_date, self.end_date)
-			annual_taxable_earning = earning_in_period * period_factor
-			additional_income += self.get_total_additional_income(payroll_period.start_date)
-		else:
-			# consider exemption declaration, find annual_earning by monthly taxable salary
-			period_factor = self.get_period_factor(payroll_period.start_date, payroll_period.end_date)
-			annual_earning = taxable_earning["taxable_earning"] * period_factor
-			exemption_amount = 0
-			if frappe.db.exists("Employee Tax Exemption Declaration", {"employee": self.employee,
-					"payroll_period": payroll_period.name, "docstatus": 1}):
-				exemption_amount = frappe.db.get_value("Employee Tax Exemption Declaration",
-					{"employee": self.employee, "payroll_period": payroll_period.name, "docstatus": 1},
-					"total_exemption_amount")
-			annual_taxable_earning = annual_earning - exemption_amount
-
-		if self.deduct_tax_for_unclaimed_employee_benefits or self.deduct_tax_for_unsubmitted_tax_exemption_proof:
-			tax_detail = self.get_tax_paid_in_period(payroll_period, tax_component)
-			if tax_detail:
-				pro_rata_tax_paid = tax_detail["total_tax_paid"] - tax_detail["additional_tax"] - tax_detail["benefit_tax"]
-				additional_tax_paid = tax_detail["additional_tax"]
-				benefit_tax_paid = tax_detail["benefit_tax"]
-
-		# add any additional income in this slip
-		additional_income += taxable_earning["additional_income"]
-		args = {
-			"payroll_period": payroll_period.name,
-			"tax_component": tax_component,
-			"period_factor": period_factor,
-			"annual_taxable_earning": annual_taxable_earning,
-			"additional_income": additional_income,
-			"unclaimed_benefit": unclaimed_benefit,
-			"pro_rata_tax_paid": pro_rata_tax_paid,
-			"benefit_tax_paid": benefit_tax_paid,
-			"additional_tax_paid": additional_tax_paid
-		}
-		return self.calculate_tax(args)
-
-	def calculate_unclaimed_taxable_benefit(self, payroll_period):
-		total_benefit, total_benefit_claim = 0, 0
-
-		# get total sum of benefits paid
-		sum_benefit = frappe.db.sql("""select sum(sd.amount) from `tabSalary Detail` sd join
-					`tabSalary Slip` ss on sd.parent=ss.name where sd.parentfield='earnings'
-					and sd.is_tax_applicable=1 and is_flexible_benefit=1 and ss.docstatus=1
-					and ss.employee='{0}' and ss.start_date between '{1}' and '{2}' and
-					ss.end_date between '{1}' and '{2}'""".format(self.employee,
-					payroll_period.start_date, self.start_date))
-		if sum_benefit and sum_benefit[0][0]:
-			total_benefit = sum_benefit[0][0]
-
-		# get total benefits claimed
-		sum_benefit_claim = frappe.db.sql("""select sum(claimed_amount) from
-		`tabEmployee Benefit Claim` where docstatus=1 and employee='{0}' and claim_date
-		between '{1}' and '{2}'""".format(self.employee, payroll_period.start_date, self.end_date))
-		if sum_benefit_claim and sum_benefit_claim[0][0]:
-			total_benefit_claim = sum_benefit_claim[0][0]
-		return total_benefit - total_benefit_claim
-
-	def calculate_unclaimed_taxable_earning(self, payroll_period, tax_component):
-		total_taxable_earning, total_exemption_amount = 0, 0
-		# calc total taxable amount in period
-		sum_taxable_earning = frappe.db.sql("""select sum(sd.amount) from `tabSalary Detail` sd join
-					`tabSalary Slip` ss on sd.parent=ss.name where sd.parentfield='earnings'
-					and sd.is_tax_applicable=1 and is_additional_component=0 and is_flexible_benefit=0
-					and ss.docstatus=1 and ss.employee='{0}' and ss.start_date between '{1}' and '{2}'
-					and ss.end_date between '{1}' and '{2}'""".format(self.employee,
-					payroll_period.start_date, self.start_date))
-		if sum_taxable_earning and sum_taxable_earning[0][0]:
-			total_taxable_earning = sum_taxable_earning[0][0]
-
-		# add up total Proof Submission
-		sum_exemption = frappe.db.sql("""select sum(exemption_amount) from
-		`tabEmployee Tax Exemption Proof Submission` where docstatus=1 and employee='{0}' and
-		payroll_period='{1}' and submission_date between '{2}' and '{3}'""".format(self.employee,
-		payroll_period.name, payroll_period.start_date, self.end_date))
-		if sum_exemption and sum_exemption[0][0]:
-			total_exemption_amount = sum_exemption[0][0]
-		total_taxable_earning -= total_exemption_amount
-		return total_taxable_earning
-
-	def get_total_additional_income(self, from_date):
-		sum_additional_earning = frappe.db.sql("""
-			select sum(sd.amount)
-			from
-				`tabSalary Detail` sd join `tabSalary Slip` ss on sd.parent=ss.name
-			where
-				sd.parentfield='earnings'
-				and sd.is_tax_applicable=1 and is_additional_component=1
-				and is_flexible_benefit=0 and ss.docstatus=1
-				and ss.employee=%(employee)s
-				and ss.start_date between %(from_date)s and %(to_date)s
-				and ss.end_date between %(from_date)s and %(to_date)s
-			""", {
-				"employee": self.employee,
-				"from_date": from_date,
-				"to_date": self.start_date
-			})
-		return flt(sum_additional_earning[0][0]) if sum_additional_earning else 0
-
-	def get_tax_paid_in_period(self, payroll_period, tax_component, only_total=False):
-		# find total_tax_paid, tax paid for benefit, additional_salary
-		sum_tax_paid = frappe.db.sql("""
-			select
-				sum(sd.amount), sum(tax_on_flexible_benefit), sum(tax_on_additional_salary)
-			from
-				`tabSalary Detail` sd join `tabSalary Slip` ss on sd.parent=ss.name
-			where
-				sd.parentfield='deductions' and sd.salary_component=%(salary_component)s
-				and sd.variable_based_on_taxable_salary=1
-				and ss.docstatus=1 and ss.employee=%(employee)s
-				and ss.start_date between %(from_date)s and %(to_date)s
-				and ss.end_date between %(from_date)s and %(to_date)s
-		""", {
-			"salary_component": tax_component,
-			"employee": self.employee,
-			"from_date": payroll_period.start_date,
-			"to_date": self.start_date
-		})
-		if sum_tax_paid and sum_tax_paid[0][0]:
-			return {
-				'total_tax_paid': sum_tax_paid[0][0],
-				'benefit_tax':sum_tax_paid[0][1],
-				'additional_tax': sum_tax_paid[0][2]
-			}
-
-	def get_taxable_earnings(self, include_flexi=0, only_flexi=0):
-		taxable_earning = 0
-		additional_income = 0
-		for earning in self.earnings:
-			if earning.is_tax_applicable:
-				if earning.is_additional_component:
-					additional_income += earning.amount
-					continue
-				if only_flexi:
-					if earning.is_flexible_benefit:
-						taxable_earning += earning.amount
-					continue
-				if include_flexi or not earning.is_flexible_benefit:
-					taxable_earning += earning.amount
-		return {
-			"taxable_earning": taxable_earning,
-			"additional_income": additional_income
-		}
-
-	def calculate_tax(self, args):
-		tax_amount, benefit_tax, additional_tax = 0, 0, 0
-		annual_taxable_earning = args.get("annual_taxable_earning")
-		benefit_to_tax = args.get("unclaimed_benefit")
-		additional_income = args.get("additional_income")
-
-		# Get tax calc by period
-		annual_tax = self.calculate_tax_by_tax_slab(args.get("payroll_period"), annual_taxable_earning)
-
-		# Calc prorata tax
-		tax_amount = annual_tax / args.get("period_factor")
-
-		# Benefit is a part of Salary Structure, add the tax diff, update annual_tax
-		if benefit_to_tax > 0:
-			annual_taxable_earning += benefit_to_tax
-			annual_tax_with_benefit_income = self.calculate_tax_by_tax_slab(
-								args.get("payroll_period"), annual_taxable_earning)
-			benefit_tax = annual_tax_with_benefit_income - annual_tax - args.get("benefit_tax_paid")
-			tax_amount += benefit_tax
-			annual_tax = annual_tax_with_benefit_income
-
-		# find the annual tax diff caused by additional_income, add to tax_amount
-		if additional_income > 0:
-			annual_tax_with_additional_income = self.calculate_tax_by_tax_slab(
-					args.get("payroll_period"), annual_taxable_earning + additional_income)
-			additional_tax = annual_tax_with_additional_income - annual_tax - args.get("additional_tax_paid")
-			tax_amount += additional_tax
-		# less paid taxes
-		if args.get("pro_rata_tax_paid"):
-			tax_amount -= args.get("pro_rata_tax_paid")
-		tax_amount = rounded(tax_amount)
-		struct_row = self.get_salary_slip_row(args.get("tax_component"))
-		return [struct_row, tax_amount, benefit_tax, additional_tax]
-
-	def calculate_tax_by_tax_slab(self, payroll_period, annual_taxable_earning):
-		payroll_period_obj = frappe.get_doc("Payroll Period", payroll_period)
-		annual_taxable_earning -= flt(payroll_period_obj.standard_tax_exemption_amount)
-		data = self.get_data_for_eval()
-		data.update({"annual_taxable_earning": annual_taxable_earning})
-
-		taxable_amount = 0
-		for slab in payroll_period_obj.taxable_salary_slabs:
-			if slab.condition and not self.eval_tax_slab_condition(slab.condition, data):
-				continue
-			if not slab.to_amount and annual_taxable_earning > slab.from_amount:
-				taxable_amount += (annual_taxable_earning - slab.from_amount) * slab.percent_deduction *.01
-				continue
-			if annual_taxable_earning > slab.from_amount and annual_taxable_earning < slab.to_amount:
-				taxable_amount += (annual_taxable_earning - slab.from_amount) * slab.percent_deduction *.01
-			elif annual_taxable_earning > slab.from_amount and annual_taxable_earning > slab.to_amount:
-				taxable_amount += (slab.to_amount - slab.from_amount) * slab.percent_deduction * .01
-		return taxable_amount
-
-	def eval_tax_slab_condition(self, condition, data):
-		try:
-			condition = condition.strip()
-			if condition:
-				return frappe.safe_eval(condition, self.whitelisted_globals, data)
-		except NameError as err:
-			frappe.throw(_("Name error: {0}".format(err)))
-		except SyntaxError as err:
-			frappe.throw(_("Syntax error in condition: {0}".format(err)))
-		except Exception as e:
-			frappe.throw(_("Error in formula or condition: {0}".format(e)))
-			raise
-
-	def get_period_factor(self, period_start, period_end, start_date=None, end_date=None):
-		# TODO if both deduct checked update the factor to make tax consistent
-		joining_date, relieving_date = frappe.db.get_value("Employee", self.employee, ["date_of_joining", "relieving_date"])
-		if getdate(joining_date) > getdate(period_start):
-			period_start = joining_date
-		if relieving_date and getdate(relieving_date) < getdate(period_end):
-			period_end = relieving_date
-
-		payroll_days = date_diff(period_end, period_start) + 1
-		if start_date and end_date:
-			salary_days = date_diff(end_date, start_date) + 1
-			return flt(payroll_days)/flt(salary_days)
-
-		# if period configured for a year and monthly frequency return 12 to make tax calc consistent
-		if 360 <= payroll_days <= 370 and self.payroll_frequency == "Monthly":
-			return 12
-
-		salary_days = date_diff(self.end_date, self.start_date) + 1
-		return flt(payroll_days)/flt(salary_days)
-
-	def get_salary_slip_row(self, salary_component):
-		component = frappe.get_doc("Salary Component", salary_component)
-		# Data for update_component_row
-		struct_row = {}
-		struct_row['depends_on_payment_days'] = component.depends_on_payment_days
-		struct_row['salary_component'] = component.name
-		struct_row['abbr'] = component.salary_component_abbr
-		struct_row['do_not_include_in_total'] = component.do_not_include_in_total
-		struct_row['is_tax_applicable'] = component.is_tax_applicable
-		struct_row['is_flexible_benefit'] = component.is_flexible_benefit
-		struct_row['variable_based_on_taxable_salary'] = component.variable_based_on_taxable_salary
-		return struct_row
+	def process_salary_based_on_leave(self, lwp=0):
+		self.get_leave_details(lwp=lwp)
+		self.calculate_net_pay()
 
 def unlink_ref_doc_from_salary_slip(ref_no):
 	linked_ss = frappe.db.sql_list("""select name from `tabSalary Slip`
diff --git a/erpnext/hr/doctype/salary_slip/test_salary_slip.py b/erpnext/hr/doctype/salary_slip/test_salary_slip.py
index 75c1e42..b7e0782 100644
--- a/erpnext/hr/doctype/salary_slip/test_salary_slip.py
+++ b/erpnext/hr/doctype/salary_slip/test_salary_slip.py
@@ -45,12 +45,12 @@
 
 		self.assertEqual(ss.total_working_days, no_of_days[0])
 		self.assertEqual(ss.payment_days, no_of_days[0])
-		self.assertEqual(ss.earnings[0].amount, 25000)
+		self.assertEqual(ss.earnings[0].amount, 50000)
 		self.assertEqual(ss.earnings[1].amount, 3000)
 		self.assertEqual(ss.deductions[0].amount, 5000)
 		self.assertEqual(ss.deductions[1].amount, 5000)
-		self.assertEqual(ss.gross_pay, 40500)
-		self.assertEqual(ss.net_pay, 29918)
+		self.assertEqual(ss.gross_pay, 78000)
+		self.assertEqual(ss.net_pay, 67418.0)
 
 	def test_salary_slip_with_holidays_excluded(self):
 		no_of_days = self.get_no_of_days()
@@ -64,13 +64,13 @@
 
 		self.assertEqual(ss.total_working_days, no_of_days[0] - no_of_days[1])
 		self.assertEqual(ss.payment_days, no_of_days[0] - no_of_days[1])
-		self.assertEqual(ss.earnings[0].amount, 25000)
-		self.assertEqual(ss.earnings[0].default_amount, 25000)
+		self.assertEqual(ss.earnings[0].amount, 50000)
+		self.assertEqual(ss.earnings[0].default_amount, 50000)
 		self.assertEqual(ss.earnings[1].amount, 3000)
 		self.assertEqual(ss.deductions[0].amount, 5000)
 		self.assertEqual(ss.deductions[1].amount, 5000)
-		self.assertEqual(ss.gross_pay, 40500)
-		self.assertEqual(ss.net_pay, 29918)
+		self.assertEqual(ss.gross_pay, 78000)
+		self.assertEqual(ss.net_pay, 67418.0)
 
 	def test_payment_days(self):
 		no_of_days = self.get_no_of_days()
@@ -211,7 +211,7 @@
 		tax_paid = get_tax_paid_in_period(employee)
 
 		# total taxable income 586000, 250000 @ 5%, 86000 @ 20% ie. 12500 + 17200
-		annual_tax = 29700
+		annual_tax = 113567.79
 		try:
 			self.assertEqual(tax_paid, annual_tax)
 		except AssertionError:
@@ -250,7 +250,7 @@
 
 		# total taxable income 416000, 166000 @ 5% ie. 8300
 		try:
-			self.assertEqual(tax_paid, 8300)
+			self.assertEqual(tax_paid, 88607.79)
 		except AssertionError:
 			print("\nSalary Slip - Tax calculation failed on following case\n", data, "\n")
 			raise
@@ -265,7 +265,7 @@
 		# total taxable income 566000, 250000 @ 5%, 66000 @ 20%, 12500 + 13200
 		tax_paid = get_tax_paid_in_period(employee)
 		try:
-			self.assertEqual(tax_paid, 25700)
+			self.assertEqual(tax_paid, 121211.48)
 		except AssertionError:
 			print("\nSalary Slip - Tax calculation failed on following case\n", data, "\n")
 			raise
@@ -365,7 +365,7 @@
 			"salary_component": 'Basic Salary',
 			"abbr":'BS',
 			"condition": 'base > 10000',
-			"formula": 'base*.5',
+			"formula": 'base',
 			"type": "Earning",
 			"amount_based_on_formula": 1
 		},
@@ -386,7 +386,6 @@
 		{
 			"salary_component": "Leave Encashment",
 			"abbr": 'LE',
-			"is_additional_component": 1,
 			"type": "Earning"
 		}
 	]
@@ -398,7 +397,8 @@
 				"is_flexible_benefit": 1,
 				"type": "Earning",
 				"pay_against_benefit_claim": 1,
-				"max_benefit_amount": 100000
+				"max_benefit_amount": 100000,
+				"depends_on_payment_days": 0
 			},
 			{
 				"salary_component": "Medical Allowance",
@@ -409,9 +409,8 @@
 				"max_benefit_amount": 15000
 			},
 			{
-				"salary_component": "Perfomance Bonus",
+				"salary_component": "Performance Bonus",
 				"abbr": 'B',
-				"is_additional_component": 1,
 				"type": "Earning"
 			}
 		])
@@ -442,7 +441,8 @@
 			"abbr":'T',
 			"formula": 'base*.1',
 			"type": "Deduction",
-			"amount_based_on_formula": 1
+			"amount_based_on_formula": 1,
+			"depends_on_payment_days": 0
 		}
 	]
 	if not test_tax:
@@ -512,21 +512,23 @@
 		{
 			"from_amount": 250000,
 			"to_amount": 500000,
-			"percent_deduction": 5
+			"percent_deduction": 5.2,
+			"condition": "annual_taxable_earning > 500000"
 		},
 		{
-			"from_amount": 500000,
+			"from_amount": 500001,
 			"to_amount": 1000000,
-			"percent_deduction": 20
+			"percent_deduction": 20.8
 		},
 		{
-			"from_amount": 1000000,
-			"percent_deduction": 30
+			"from_amount": 1000001,
+			"percent_deduction": 31.2
 		}
 	]
 	payroll_period.taxable_salary_slabs = []
 	for item in data:
 		payroll_period.append("taxable_salary_slabs", item)
+	payroll_period.standard_tax_exemption_amount = 52500
 	payroll_period.save()
 
 def create_salary_slips_for_payroll_period(employee, salary_structure, payroll_period, deduct_random=True):
@@ -559,7 +561,7 @@
 		"doctype": "Additional Salary",
 		"employee": employee,
 		"company": erpnext.get_default_company(),
-		"salary_component": "Perfomance Bonus",
+		"salary_component": "Performance Bonus",
 		"payroll_date": salary_date,
 		"amount": amount,
 		"type": "Earning"
diff --git a/erpnext/hr/doctype/salary_structure/salary_structure.js b/erpnext/hr/doctype/salary_structure/salary_structure.js
index e3f37e7..d56320a 100755
--- a/erpnext/hr/doctype/salary_structure/salary_structure.js
+++ b/erpnext/hr/doctype/salary_structure/salary_structure.js
@@ -147,7 +147,8 @@
 							source_name: frm.doc.name,
 							employee: values.employee,
 							as_print: 1,
-							print_format: print_format
+							print_format: print_format,
+							for_preview: 1
 						},
 						callback: function(r) {
 							var new_window = window.open();
diff --git a/erpnext/hr/doctype/salary_structure/salary_structure.py b/erpnext/hr/doctype/salary_structure/salary_structure.py
index 3431d3d..f7d712d 100644
--- a/erpnext/hr/doctype/salary_structure/salary_structure.py
+++ b/erpnext/hr/doctype/salary_structure/salary_structure.py
@@ -137,7 +137,7 @@
 	return salary_structures_assignments
 
 @frappe.whitelist()
-def make_salary_slip(source_name, target_doc = None, employee = None, as_print = False, print_format = None):
+def make_salary_slip(source_name, target_doc = None, employee = None, as_print = False, print_format = None, for_preview=0):
 	def postprocess(source, target):
 		if employee:
 			employee_details = frappe.db.get_value("Employee", employee,
@@ -147,7 +147,7 @@
 			target.branch = employee_details.branch
 			target.designation = employee_details.designation
 			target.department = employee_details.department
-		target.run_method('process_salary_structure')
+		target.run_method('process_salary_structure', for_preview=for_preview)
 
 	doc = get_mapped_doc("Salary Structure", source_name, {
 		"Salary Structure": {
diff --git a/erpnext/hr/doctype/salary_structure/test_salary_structure.py b/erpnext/hr/doctype/salary_structure/test_salary_structure.py
index 1a660d9..848c3df 100644
--- a/erpnext/hr/doctype/salary_structure/test_salary_structure.py
+++ b/erpnext/hr/doctype/salary_structure/test_salary_structure.py
@@ -39,18 +39,19 @@
 			holiday_list.save()
 
 	def test_amount_totals(self):
+		frappe.db.set_value("HR Settings", None, "include_holidays_in_total_working_days", 0)
 		sal_slip = frappe.get_value("Salary Slip", {"employee_name":"test_employee_2@salary.com"})
 		if not sal_slip:
 			sal_slip = make_employee_salary_slip("test_employee_2@salary.com", "Monthly", "Salary Structure Sample")
 			self.assertEqual(sal_slip.get("salary_structure"), 'Salary Structure Sample')
-			self.assertEqual(sal_slip.get("earnings")[0].amount, 25000)
+			self.assertEqual(sal_slip.get("earnings")[0].amount, 50000)
 			self.assertEqual(sal_slip.get("earnings")[1].amount, 3000)
-			self.assertEqual(sal_slip.get("earnings")[2].amount, 12500)
-			self.assertEqual(sal_slip.get("gross_pay"), 40500)
+			self.assertEqual(sal_slip.get("earnings")[2].amount, 25000)
+			self.assertEqual(sal_slip.get("gross_pay"), 78000)
 			self.assertEqual(sal_slip.get("deductions")[0].amount, 5000)
 			self.assertEqual(sal_slip.get("deductions")[1].amount, 5000)
 			self.assertEqual(sal_slip.get("total_deduction"), 10000)
-			self.assertEqual(sal_slip.get("net_pay"), 30500)
+			self.assertEqual(sal_slip.get("net_pay"), 68000)
 
 	def test_whitespaces_in_formula_conditions_fields(self):
 		salary_structure = make_salary_structure("Salary Structure Sample", "Monthly", dont_submit=True)
diff --git a/erpnext/hr/report/salary_register/salary_register.py b/erpnext/hr/report/salary_register/salary_register.py
index 869ca23..be4b501 100644
--- a/erpnext/hr/report/salary_register/salary_register.py
+++ b/erpnext/hr/report/salary_register/salary_register.py
@@ -35,6 +35,8 @@
 		for d in ded_types:
 			row.append(ss_ded_map.get(ss.name, {}).get(d))
 
+		row.append(ss.total_loan_repayment)
+
 		row += [ss.total_deduction, ss.net_pay]
 
 		data.append(row)
@@ -67,7 +69,7 @@
 
 	columns = columns + [(e + ":Currency:120") for e in salary_components[_("Earning")]] + \
 		[_("Gross Pay") + ":Currency:120"] + [(d + ":Currency:120") for d in salary_components[_("Deduction")]] + \
-		[_("Total Deduction") + ":Currency:120", _("Net Pay") + ":Currency:120"]
+		[_("Loan Repayment") + ":Currency:120", _("Total Deduction") + ":Currency:120", _("Net Pay") + ":Currency:120"]
 
 	return columns, salary_components[_("Earning")], salary_components[_("Deduction")]
 
diff --git a/erpnext/hr/utils.py b/erpnext/hr/utils.py
index a600e75..7357fd0 100644
--- a/erpnext/hr/utils.py
+++ b/erpnext/hr/utils.py
@@ -126,9 +126,9 @@
 	fields = []
 	for df in frappe.get_meta("Employee").get("fields"):
 		if df.fieldname in ["salutation", "user_id", "employee_number", "employment_type",
-		"holiday_list", "branch", "department", "designation", "grade",
-		"notice_number_of_days", "reports_to", "leave_policy", "company_email"]:
-			fields.append({"value": df.fieldname, "label": df.label})
+			"holiday_list", "branch", "department", "designation", "grade",
+			"notice_number_of_days", "reports_to", "leave_policy", "company_email"]:
+				fields.append({"value": df.fieldname, "label": df.label})
 	return fields
 
 @frappe.whitelist()
@@ -263,12 +263,6 @@
 	if leave_period:
 		return leave_period
 
-def get_payroll_period(from_date, to_date, company):
-	payroll_period = frappe.db.sql("""select name, start_date, end_date from
-		`tabPayroll Period`
-		where start_date<=%s and end_date>= %s and company=%s""", (from_date, to_date, company), as_dict=1)
-	return payroll_period[0] if payroll_period else None
-
 def allocate_earned_leaves():
 	'''Allocate earned leaves to Employees'''
 	e_leave_types = frappe.get_all("Leave Type",
diff --git a/erpnext/patches/v11_0/create_department_records_for_each_company.py b/erpnext/patches/v11_0/create_department_records_for_each_company.py
index b5a7bd9..f09c5b2 100644
--- a/erpnext/patches/v11_0/create_department_records_for_each_company.py
+++ b/erpnext/patches/v11_0/create_department_records_for_each_company.py
@@ -70,7 +70,7 @@
 	emp_details = frappe.get_all("Employee", fields=["name", "company"])
 
 	for employee in emp_details:
-		records = comp_dict[employee.company]
+		records = comp_dict[employee.company] if employee.company else []
 
 		for department in records:
 			when_then.append('''
diff --git a/erpnext/patches/v11_0/inter_state_field_for_gst.py b/erpnext/patches/v11_0/inter_state_field_for_gst.py
index 232d442..48249c9 100644
--- a/erpnext/patches/v11_0/inter_state_field_for_gst.py
+++ b/erpnext/patches/v11_0/inter_state_field_for_gst.py
@@ -8,6 +8,17 @@
 		return
 	frappe.reload_doc("hr", "doctype", "Employee Tax Exemption Declaration")
 	frappe.reload_doc("hr", "doctype", "Employee Tax Exemption Proof Submission")
+	frappe.reload_doc("hr", "doctype", "Employee Grade")
+	frappe.reload_doc("hr", "doctype", "Leave Policy")
+
+	frappe.reload_doc("accounts", "doctype", "Bank Account")
+	frappe.reload_doc("accounts", "doctype", "Tax Withholding Category")
+	frappe.reload_doc("accounts", "doctype", "Allowed To Transact With")
+	frappe.reload_doc("accounts", "doctype", "Finance Book")
+	frappe.reload_doc("accounts", "doctype", "Loyalty Program")
+
+	frappe.reload_doc("stock", "doctype", "Item Barcode")
+
 	make_custom_fields()
 
 	frappe.reload_doc("accounts", "doctype", "sales_taxes_and_charges")
diff --git a/erpnext/patches/v8_7/sync_india_custom_fields.py b/erpnext/patches/v8_7/sync_india_custom_fields.py
index c684b24..e1ae0b7 100644
--- a/erpnext/patches/v8_7/sync_india_custom_fields.py
+++ b/erpnext/patches/v8_7/sync_india_custom_fields.py
@@ -7,6 +7,9 @@
 	if not company:
 		return
 
+	frappe.reload_doc('hr', 'doctype', 'payroll_period')
+	frappe.reload_doc('hr', 'doctype', 'employee_tax_exemption_declaration_category')
+	frappe.reload_doc('hr', 'doctype', 'employee_tax_exemption_proof_submission_detail')
 	frappe.reload_doc('hr', 'doctype', 'employee_tax_exemption_declaration')
 	frappe.reload_doc('hr', 'doctype', 'employee_tax_exemption_proof_submission')
 
diff --git a/erpnext/regional/india/setup.py b/erpnext/regional/india/setup.py
index e1aa233..04841c3 100644
--- a/erpnext/regional/india/setup.py
+++ b/erpnext/regional/india/setup.py
@@ -362,9 +362,9 @@
 			doc.flags.ignore_permissions = True
 			doc.insert()
 		except frappe.NameError:
-			pass
+			frappe.clear_messages()
 		except frappe.DuplicateEntryError:
-			pass
+			frappe.clear_messages()
 
 	# create records for Tax Withholding Category
 	set_tax_withholding_category(company)
diff --git a/erpnext/regional/india/utils.py b/erpnext/regional/india/utils.py
index f413a8e..fc2fc96 100644
--- a/erpnext/regional/india/utils.py
+++ b/erpnext/regional/india/utils.py
@@ -146,11 +146,9 @@
 	hra_component = frappe.get_cached_value('Company',  doc.company,  "hra_component")
 	if not (basic_component and hra_component):
 		frappe.throw(_("Please mention Basic and HRA component in Company"))
-
 	annual_exemption, monthly_exemption, hra_amount = 0, 0, 0
 	if hra_component and basic_component:
 		assignment = get_salary_assignment(doc.employee, nowdate())
-
 		if assignment:
 			hra_component_exists = frappe.db.exists("Salary Detail", {
 				"parent": assignment.salary_structure,
@@ -158,18 +156,19 @@
 				"parentfield": "earnings",
 				"parenttype": "Salary Structure"
 			})
+
 			if hra_component_exists:
 				basic_amount, hra_amount = get_component_amt_from_salary_slip(doc.employee,
 					assignment.salary_structure, basic_component, hra_component)
 				if hra_amount:
 					if doc.monthly_house_rent:
 						annual_exemption = calculate_hra_exemption(assignment.salary_structure,
-							basic_amount, hra_amount, doc.monthly_house_rent,
-							doc.rented_in_metro_city)
+							basic_amount, hra_amount, doc.monthly_house_rent, doc.rented_in_metro_city)
 						if annual_exemption > 0:
 							monthly_exemption = annual_exemption / 12
 						else:
 							annual_exemption = 0
+
 		elif doc.docstatus == 1:
 			frappe.throw(_("Salary Structure must be submitted before submission of Tax Ememption Declaration"))
 
@@ -180,7 +179,7 @@
 	})
 
 def get_component_amt_from_salary_slip(employee, salary_structure, basic_component, hra_component):
-	salary_slip = make_salary_slip(salary_structure, employee=employee)
+	salary_slip = make_salary_slip(salary_structure, employee=employee, for_preview=1)
 	basic_amt, hra_amt = 0, 0
 	for earning in salary_slip.earnings:
 		if earning.salary_component == basic_component:
diff --git a/erpnext/selling/doctype/sales_order/test_sales_order.py b/erpnext/selling/doctype/sales_order/test_sales_order.py
index 4fca15b..e7697e2 100644
--- a/erpnext/selling/doctype/sales_order/test_sales_order.py
+++ b/erpnext/selling/doctype/sales_order/test_sales_order.py
@@ -124,6 +124,44 @@
 		so.load_from_db()
 		self.assertEqual(so.get("items")[0].delivered_qty, 9)
 
+	def test_return_against_sales_order(self):
+		so = make_sales_order()
+
+		dn = create_dn_against_so(so.name, 6)
+
+		so.load_from_db()
+		self.assertEqual(so.get("items")[0].delivered_qty, 6)
+
+		# Check delivered_qty after make_sales_invoice with update_stock checked
+		si2 = make_sales_invoice(so.name)
+		si2.set("update_stock", 1)
+		si2.get("items")[0].qty = 3
+		si2.insert()
+		si2.submit()
+
+		so.load_from_db()
+
+		self.assertEqual(so.get("items")[0].delivered_qty, 9)
+
+		# Make return deliver note, sales invoice and check quantity
+		from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
+		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+
+		dn1 = create_delivery_note(is_return=1, return_against=dn.name, qty=-3, do_not_submit=True)
+		dn1.items[0].against_sales_order = so.name
+		dn1.items[0].so_detail = so.items[0].name
+		dn1.submit()
+
+		si1 = create_sales_invoice(is_return=1, return_against=si2.name, qty=-1, update_stock=1, do_not_submit=True)
+		si1.items[0].sales_order = so.name
+		si1.items[0].so_detail = so.items[0].name
+		si1.submit()
+
+
+		so.load_from_db()
+		self.assertEqual(so.get("items")[0].delivered_qty, 5)
+
+
 	def test_reserved_qty_for_partial_delivery(self):
 		make_stock_entry(target="_Test Warehouse - _TC", qty=10, rate=100)
 		existing_reserved_qty = get_reserved_qty()
diff --git a/erpnext/setup/doctype/company/company.js b/erpnext/setup/doctype/company/company.js
index 4ac11c0..1e6056e 100644
--- a/erpnext/setup/doctype/company/company.js
+++ b/erpnext/setup/doctype/company/company.js
@@ -11,11 +11,6 @@
 				filters: {"type": "Earning"}
 			}
 		});
-		frm.set_query("arrear_component", function(){
-			return {
-				filters: {"is_additional_component": 1}
-			}
-		});
 
 		frm.set_query("parent_company", function() {
 			return {
diff --git a/erpnext/setup/setup_wizard/operations/install_fixtures.py b/erpnext/setup/setup_wizard/operations/install_fixtures.py
index 66871db..89f4e30 100644
--- a/erpnext/setup/setup_wizard/operations/install_fixtures.py
+++ b/erpnext/setup/setup_wizard/operations/install_fixtures.py
@@ -363,7 +363,12 @@
 def install_company(args):
 	records = [
 		# Fiscal Year
-		{ "doctype": "Fiscal Year", 'year': get_fy_details(args.fy_start_date, args.fy_end_date), 'year_start_date': args.fy_start_date, 'year_end_date': args.fy_end_date },
+		{
+			'doctype': "Fiscal Year",
+			'year': get_fy_details(args.fy_start_date, args.fy_end_date),
+			'year_start_date': args.fy_start_date,
+			'year_end_date': args.fy_end_date
+		},
 
 		# Company
 		{
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index b8c4604..1e1030c 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -52,16 +52,20 @@
 			'percent_join_field': 'against_sales_invoice',
 			'overflow_type': 'delivery',
 			'no_tolerance': 1
-		},
-		{
-			'source_dt': 'Delivery Note Item',
-			'target_dt': 'Sales Order Item',
-			'join_field': 'so_detail',
-			'target_field': 'returned_qty',
-			'target_parent_dt': 'Sales Order',
-			'source_field': '-1 * qty',
-			'extra_cond': """ and exists (select name from `tabDelivery Note` where name=`tabDelivery Note Item`.parent and is_return=1)"""
 		}]
+		if cint(self.is_return):
+			self.status_updater.append({
+				'source_dt': 'Delivery Note Item',
+				'target_dt': 'Sales Order Item',
+				'join_field': 'so_detail',
+				'target_field': 'returned_qty',
+				'target_parent_dt': 'Sales Order',
+				'source_field': '-1 * qty',
+				'second_source_dt': 'Sales Invoice Item',
+				'second_source_field': '-1 * qty',
+				'second_join_field': 'so_detail',
+				'extra_cond': """ and exists (select name from `tabDelivery Note` where name=`tabDelivery Note Item`.parent and is_return=1)"""
+			})
 
 	def before_print(self):
 		def toggle_print_hide(meta, fieldname):
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index 1bd55f8..54a414c 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -24,14 +24,17 @@
 	def __init__(self, *args, **kwargs):
 		super(PurchaseReceipt, self).__init__(*args, **kwargs)
 		self.status_updater = [{
-			'source_dt': 'Purchase Receipt Item',
 			'target_dt': 'Purchase Order Item',
 			'join_field': 'purchase_order_item',
 			'target_field': 'received_qty',
 			'target_parent_dt': 'Purchase Order',
 			'target_parent_field': 'per_received',
 			'target_ref_field': 'qty',
-			'source_field': 'qty',
+			'source_dt': 'Purchase Receipt Item',
+			'source_field': 'received_qty',
+			'second_source_dt': 'Purchase Invoice Item',
+			'second_source_field': 'received_qty',
+			'second_join_field': 'po_detail',
 			'percent_join_field': 'purchase_order',
 			'overflow_type': 'receipt'
 		},
@@ -58,6 +61,18 @@
 			# 'overflow_type': 'receipt',
 			'extra_cond': """ and exists (select name from `tabPurchase Receipt` where name=`tabPurchase Receipt Item`.parent and is_return=1)"""
 		}]
+		if cint(self.is_return):
+			self.status_updater.append({
+				'source_dt': 'Purchase Receipt Item',
+				'target_dt': 'Purchase Order Item',
+				'join_field': 'purchase_order_item',
+				'target_field': 'returned_qty',
+				'source_field': '-1 * qty',
+				'second_source_dt': 'Purchase Invoice Item',
+				'second_source_field': '-1 * qty',
+				'second_join_field': 'po_detail',
+				'extra_cond': """ and exists (select name from `tabPurchase Receipt` where name=`tabPurchase Receipt Item`.parent and is_return=1)"""
+			})
 
 	def validate(self):
 		self.validate_posting_time()
diff --git a/erpnext/support/doctype/issue/issue.py b/erpnext/support/doctype/issue/issue.py
index d626def..dca06d4 100644
--- a/erpnext/support/doctype/issue/issue.py
+++ b/erpnext/support/doctype/issue/issue.py
@@ -32,10 +32,6 @@
 		self.update_status()
 		self.set_lead_contact(self.raised_by)
 
-		if self.status == "Closed":
-			from frappe.desk.form.assign_to import clear
-			clear(self.doctype, self.name)
-
 	def on_update(self):
 		# Add a communication in the issue timeline
 		if self.flags.create_communication and self.via_customer_portal: