diff --git a/erpnext/accounts/doctype/purchase_invoice/regional/india.js b/erpnext/accounts/doctype/purchase_invoice/regional/india.js
new file mode 100644
index 0000000..81488a2
--- /dev/null
+++ b/erpnext/accounts/doctype/purchase_invoice/regional/india.js
@@ -0,0 +1,3 @@
+{% include "erpnext/regional/india/taxes.js" %}
+
+erpnext.setup_auto_gst_taxation('Purchase Invoice');
diff --git a/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.json b/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.json
index bc42630..a18fec6 100644
--- a/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.json
+++ b/erpnext/accounts/doctype/purchase_taxes_and_charges_template/purchase_taxes_and_charges_template.json
@@ -1,300 +1,108 @@
 {
- "allow_copy": 0, 
- "allow_import": 1, 
- "allow_rename": 1, 
- "autoname": "field:title", 
- "beta": 0, 
- "creation": "2013-01-10 16:34:08", 
- "custom": 0, 
- "description": "Standard tax template that can be applied to all Purchase Transactions. This template can contain list of tax heads and also other expense heads like \"Shipping\", \"Insurance\", \"Handling\" etc.\n\n#### Note\n\nThe tax rate you define here will be the standard tax rate for all **Items**. If there are **Items** that have different rates, they must be added in the **Item Tax** table in the **Item** master.\n\n#### Description of Columns\n\n1. Calculation Type: \n    - This can be on **Net Total** (that is the sum of basic amount).\n    - **On Previous Row Total / Amount** (for cumulative taxes or charges). If you select this option, the tax will be applied as a percentage of the previous row (in the tax table) amount or total.\n    - **Actual** (as mentioned).\n2. Account Head: The Account ledger under which this tax will be booked\n3. Cost Center: If the tax / charge is an income (like shipping) or expense it needs to be booked against a Cost Center.\n4. Description: Description of the tax (that will be printed in invoices / quotes).\n5. Rate: Tax rate.\n6. Amount: Tax amount.\n7. Total: Cumulative total to this point.\n8. Enter Row: If based on \"Previous Row Total\" you can select the row number which will be taken as a base for this calculation (default is the previous row).\n9. Consider Tax or Charge for: In this section you can specify if the tax / charge is only for valuation (not a part of total) or only for total (does not add value to the item) or for both.\n10. Add or Deduct: Whether you want to add or deduct the tax.", 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "Setup", 
- "editable_grid": 0, 
+ "allow_import": 1,
+ "allow_rename": 1,
+ "creation": "2013-01-10 16:34:08",
+ "description": "Standard tax template that can be applied to all Purchase Transactions. This template can contain list of tax heads and also other expense heads like \"Shipping\", \"Insurance\", \"Handling\" etc.\n\n#### Note\n\nThe tax rate you define here will be the standard tax rate for all **Items**. If there are **Items** that have different rates, they must be added in the **Item Tax** table in the **Item** master.\n\n#### Description of Columns\n\n1. Calculation Type: \n    - This can be on **Net Total** (that is the sum of basic amount).\n    - **On Previous Row Total / Amount** (for cumulative taxes or charges). If you select this option, the tax will be applied as a percentage of the previous row (in the tax table) amount or total.\n    - **Actual** (as mentioned).\n2. Account Head: The Account ledger under which this tax will be booked\n3. Cost Center: If the tax / charge is an income (like shipping) or expense it needs to be booked against a Cost Center.\n4. Description: Description of the tax (that will be printed in invoices / quotes).\n5. Rate: Tax rate.\n6. Amount: Tax amount.\n7. Total: Cumulative total to this point.\n8. Enter Row: If based on \"Previous Row Total\" you can select the row number which will be taken as a base for this calculation (default is the previous row).\n9. Consider Tax or Charge for: In this section you can specify if the tax / charge is only for valuation (not a part of total) or only for total (does not add value to the item) or for both.\n10. Add or Deduct: Whether you want to add or deduct the tax.",
+ "doctype": "DocType",
+ "document_type": "Setup",
+ "field_order": [
+  "title",
+  "is_default",
+  "disabled",
+  "column_break4",
+  "company",
+  "tax_category",
+  "section_break6",
+  "taxes"
+ ],
  "fields": [
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "title", 
-   "fieldtype": "Data", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 1, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Title", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "title", 
-   "oldfieldtype": "Data", 
-   "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, 
-   "unique": 0
-  }, 
+   "fieldname": "title",
+   "fieldtype": "Data",
+   "label": "Title",
+   "no_copy": 1,
+   "oldfieldname": "title",
+   "oldfieldtype": "Data",
+   "reqd": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "is_default", 
-   "fieldtype": "Check", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Default", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "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, 
-   "unique": 0
-  }, 
+   "default": "0",
+   "fieldname": "is_default",
+   "fieldtype": "Check",
+   "in_list_view": 1,
+   "label": "Default"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "disabled", 
-   "fieldtype": "Check", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Disabled", 
-   "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, 
-   "unique": 0
-  }, 
+   "default": "0",
+   "fieldname": "disabled",
+   "fieldtype": "Check",
+   "in_list_view": 1,
+   "label": "Disabled"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "column_break4", 
-   "fieldtype": "Column Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "", 
-   "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, 
-   "unique": 0
-  }, 
+   "fieldname": "column_break4",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "company", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 1, 
-   "in_list_view": 1, 
-   "in_standard_filter": 1, 
-   "label": "Company", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Company", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 1, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "company",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "in_standard_filter": 1,
+   "label": "Company",
+   "options": "Company",
+   "remember_last_selected_value": 1,
+   "reqd": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "section_break6", 
-   "fieldtype": "Section Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "", 
-   "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, 
-   "unique": 0
-  }, 
+   "fieldname": "section_break6",
+   "fieldtype": "Section Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "taxes", 
-   "fieldtype": "Table", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Purchase Taxes and Charges", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "purchase_tax_details", 
-   "oldfieldtype": "Table", 
-   "options": "Purchase Taxes and Charges", 
-   "permlevel": 0, 
-   "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, 
-   "unique": 0
+   "fieldname": "taxes",
+   "fieldtype": "Table",
+   "label": "Purchase Taxes and Charges",
+   "oldfieldname": "purchase_tax_details",
+   "oldfieldtype": "Table",
+   "options": "Purchase Taxes and Charges"
+  },
+  {
+   "fieldname": "tax_category",
+   "fieldtype": "Link",
+   "label": "Tax Category",
+   "options": "Tax Category"
   }
- ], 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "icon": "fa fa-money", 
- "idx": 1, 
- "image_view": 0, 
- "in_create": 0, 
-
- "is_submittable": 0, 
- "issingle": 0, 
- "istable": 0, 
- "max_attachments": 0, 
- "modified": "2016-11-07 05:18:44.095798", 
- "modified_by": "Administrator", 
- "module": "Accounts", 
- "name": "Purchase Taxes and Charges Template", 
- "owner": "wasim@webnotestech.com", 
+ ],
+ "icon": "fa fa-money",
+ "idx": 1,
+ "modified": "2019-11-25 13:05:26.220275",
+ "modified_by": "Administrator",
+ "module": "Accounts",
+ "name": "Purchase Taxes and Charges Template",
+ "owner": "wasim@webnotestech.com",
  "permissions": [
   {
-   "amend": 0, 
-   "apply_user_permissions": 0, 
-   "cancel": 0, 
-   "create": 0, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "is_custom": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Purchase Manager", 
-   "set_user_permissions": 0, 
-   "share": 0, 
-   "submit": 0, 
-   "write": 0
-  }, 
+   "email": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Purchase Manager"
+  },
   {
-   "amend": 0, 
-   "apply_user_permissions": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "is_custom": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Purchase Master Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 0, 
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Purchase Master Manager",
+   "share": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 0, 
-   "apply_user_permissions": 0, 
-   "cancel": 0, 
-   "create": 0, 
-   "delete": 0, 
-   "email": 0, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "is_custom": 0, 
-   "permlevel": 0, 
-   "print": 0, 
-   "read": 1, 
-   "report": 0, 
-   "role": "Purchase User", 
-   "set_user_permissions": 0, 
-   "share": 0, 
-   "submit": 0, 
-   "write": 0
+   "read": 1,
+   "role": "Purchase User"
   }
- ], 
- "quick_entry": 0, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "sort_order": "DESC", 
- "track_seen": 0
+ ],
+ "sort_order": "DESC",
+ "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/accounts/doctype/sales_invoice/regional/india.js b/erpnext/accounts/doctype/sales_invoice/regional/india.js
index c8305e3..48fa364 100644
--- a/erpnext/accounts/doctype/sales_invoice/regional/india.js
+++ b/erpnext/accounts/doctype/sales_invoice/regional/india.js
@@ -1,3 +1,7 @@
+{% include "erpnext/regional/india/taxes.js" %}
+
+erpnext.setup_auto_gst_taxation('Sales Invoice');
+
 frappe.ui.form.on("Sales Invoice", {
 	setup: function(frm) {
 		frm.set_query('transporter', function() {
@@ -35,4 +39,5 @@
 			}, __("Make"));
 		}
 	}
+
 });
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index 2ea74f6..7f4ae3c 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -697,8 +697,8 @@
 		if (frm.doc.company)
 		{
 			frappe.call({
-				method:"frappe.contacts.doctype.address.address.get_default_address",
-				args:{ doctype:'Company',name:frm.doc.company},
+				method:"erpnext.setup.doctype.company.company.get_default_company_address",
+				args:{name:frm.doc.company, existing_address: frm.doc.company_address},
 				callback: function(r){
 					if (r.message){
 						frm.set_value("company_address",r.message)
diff --git a/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.json b/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.json
index 29e15d1..19781bd 100644
--- a/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.json
+++ b/erpnext/accounts/doctype/sales_taxes_and_charges_template/sales_taxes_and_charges_template.json
@@ -1,299 +1,119 @@
 {
- "allow_copy": 0, 
- "allow_import": 1, 
- "allow_rename": 1, 
- "autoname": "field:title", 
- "beta": 0, 
- "creation": "2013-01-10 16:34:09", 
- "custom": 0, 
- "description": "Standard tax template that can be applied to all Sales Transactions. This template can contain list of tax heads and also other expense / income heads like \"Shipping\", \"Insurance\", \"Handling\" etc.\n\n#### Note\n\nThe tax rate you define here will be the standard tax rate for all **Items**. If there are **Items** that have different rates, they must be added in the **Item Tax** table in the **Item** master.\n\n#### Description of Columns\n\n1. Calculation Type: \n    - This can be on **Net Total** (that is the sum of basic amount).\n    - **On Previous Row Total / Amount** (for cumulative taxes or charges). If you select this option, the tax will be applied as a percentage of the previous row (in the tax table) amount or total.\n    - **Actual** (as mentioned).\n2. Account Head: The Account ledger under which this tax will be booked\n3. Cost Center: If the tax / charge is an income (like shipping) or expense it needs to be booked against a Cost Center.\n4. Description: Description of the tax (that will be printed in invoices / quotes).\n5. Rate: Tax rate.\n6. Amount: Tax amount.\n7. Total: Cumulative total to this point.\n8. Enter Row: If based on \"Previous Row Total\" you can select the row number which will be taken as a base for this calculation (default is the previous row).\n9. Is this Tax included in Basic Rate?: If you check this, it means that this tax will not be shown below the item table, but will be included in the Basic Rate in your main item table. This is useful where you want give a flat price (inclusive of all taxes) price to customers.", 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "Setup", 
- "editable_grid": 0, 
+ "allow_import": 1,
+ "allow_rename": 1,
+ "creation": "2013-01-10 16:34:09",
+ "description": "Standard tax template that can be applied to all Sales Transactions. This template can contain list of tax heads and also other expense / income heads like \"Shipping\", \"Insurance\", \"Handling\" etc.\n\n#### Note\n\nThe tax rate you define here will be the standard tax rate for all **Items**. If there are **Items** that have different rates, they must be added in the **Item Tax** table in the **Item** master.\n\n#### Description of Columns\n\n1. Calculation Type: \n    - This can be on **Net Total** (that is the sum of basic amount).\n    - **On Previous Row Total / Amount** (for cumulative taxes or charges). If you select this option, the tax will be applied as a percentage of the previous row (in the tax table) amount or total.\n    - **Actual** (as mentioned).\n2. Account Head: The Account ledger under which this tax will be booked\n3. Cost Center: If the tax / charge is an income (like shipping) or expense it needs to be booked against a Cost Center.\n4. Description: Description of the tax (that will be printed in invoices / quotes).\n5. Rate: Tax rate.\n6. Amount: Tax amount.\n7. Total: Cumulative total to this point.\n8. Enter Row: If based on \"Previous Row Total\" you can select the row number which will be taken as a base for this calculation (default is the previous row).\n9. Is this Tax included in Basic Rate?: If you check this, it means that this tax will not be shown below the item table, but will be included in the Basic Rate in your main item table. This is useful where you want give a flat price (inclusive of all taxes) price to customers.",
+ "doctype": "DocType",
+ "document_type": "Setup",
+ "engine": "InnoDB",
+ "field_order": [
+  "title",
+  "is_default",
+  "disabled",
+  "column_break_3",
+  "company",
+  "tax_category",
+  "section_break_5",
+  "taxes"
+ ],
  "fields": [
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "title", 
-   "fieldtype": "Data", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 1, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Title", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "title", 
-   "oldfieldtype": "Data", 
-   "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, 
-   "unique": 0
-  }, 
+   "fieldname": "title",
+   "fieldtype": "Data",
+   "label": "Title",
+   "no_copy": 1,
+   "oldfieldname": "title",
+   "oldfieldtype": "Data",
+   "reqd": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "is_default", 
-   "fieldtype": "Check", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Default", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "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, 
-   "unique": 0
-  }, 
+   "default": "0",
+   "fieldname": "is_default",
+   "fieldtype": "Check",
+   "in_list_view": 1,
+   "label": "Default"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "disabled", 
-   "fieldtype": "Check", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Disabled", 
-   "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, 
-   "unique": 0
-  }, 
+   "default": "0",
+   "fieldname": "disabled",
+   "fieldtype": "Check",
+   "label": "Disabled"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "column_break_3", 
-   "fieldtype": "Column Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "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, 
-   "unique": 0
-  }, 
+   "fieldname": "column_break_3",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "company", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 1, 
-   "in_list_view": 1, 
-   "in_standard_filter": 1, 
-   "label": "Company", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "company", 
-   "oldfieldtype": "Link", 
-   "options": "Company", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 1, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "company",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "in_standard_filter": 1,
+   "label": "Company",
+   "oldfieldname": "company",
+   "oldfieldtype": "Link",
+   "options": "Company",
+   "remember_last_selected_value": 1,
+   "reqd": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "section_break_5", 
-   "fieldtype": "Section Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "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, 
-   "unique": 0
-  }, 
+   "fieldname": "section_break_5",
+   "fieldtype": "Section Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "description": "* Will be calculated in the transaction.", 
-   "fieldname": "taxes", 
-   "fieldtype": "Table", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Sales Taxes and Charges", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "other_charges", 
-   "oldfieldtype": "Table", 
-   "options": "Sales Taxes and Charges", 
-   "permlevel": 0, 
-   "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, 
-   "unique": 0
+   "description": "* Will be calculated in the transaction.",
+   "fieldname": "taxes",
+   "fieldtype": "Table",
+   "label": "Sales Taxes and Charges",
+   "oldfieldname": "other_charges",
+   "oldfieldtype": "Table",
+   "options": "Sales Taxes and Charges"
+  },
+  {
+   "fieldname": "tax_category",
+   "fieldtype": "Link",
+   "label": "Tax Category",
+   "options": "Tax Category"
   }
- ], 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "icon": "fa fa-money", 
- "idx": 1, 
- "image_view": 0, 
- "in_create": 0, 
-
- "is_submittable": 0, 
- "issingle": 0, 
- "istable": 0, 
- "max_attachments": 0, 
- "modified": "2016-11-07 05:18:41.743257", 
- "modified_by": "Administrator", 
- "module": "Accounts", 
- "name": "Sales Taxes and Charges Template", 
- "owner": "Administrator", 
+ ],
+ "icon": "fa fa-money",
+ "idx": 1,
+ "modified": "2019-11-25 13:06:03.279099",
+ "modified_by": "Administrator",
+ "module": "Accounts",
+ "name": "Sales Taxes and Charges Template",
+ "owner": "Administrator",
  "permissions": [
   {
-   "amend": 0, 
-   "apply_user_permissions": 1, 
-   "cancel": 0, 
-   "create": 0, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "is_custom": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Sales User", 
-   "set_user_permissions": 0, 
-   "share": 0, 
-   "submit": 0, 
-   "write": 0
-  }, 
+   "email": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Sales User"
+  },
   {
-   "amend": 0, 
-   "apply_user_permissions": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "is_custom": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Accounts Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 0, 
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Accounts Manager",
+   "share": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 0, 
-   "apply_user_permissions": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "is_custom": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Sales Master Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 0, 
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Sales Master Manager",
+   "share": 1,
    "write": 1
   }
- ], 
- "quick_entry": 0, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "sort_order": "ASC", 
- "track_seen": 0
+ ],
+ "sort_field": "modified",
+ "sort_order": "ASC",
+ "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/accounts/party.py b/erpnext/accounts/party.py
index 59936d5..156f218 100644
--- a/erpnext/accounts/party.py
+++ b/erpnext/accounts/party.py
@@ -23,7 +23,7 @@
 @frappe.whitelist()
 def get_party_details(party=None, account=None, party_type="Customer", company=None, posting_date=None,
 	bill_date=None, price_list=None, currency=None, doctype=None, ignore_permissions=False, fetch_payment_terms_template=True,
-	party_address=None, shipping_address=None, pos_profile=None):
+	party_address=None, company_address=None, shipping_address=None, pos_profile=None):
 
 	if not party:
 		return {}
@@ -31,14 +31,14 @@
 		frappe.throw(_("{0}: {1} does not exists").format(party_type, party))
 	return _get_party_details(party, account, party_type,
 		company, posting_date, bill_date, price_list, currency, doctype, ignore_permissions,
-		fetch_payment_terms_template, party_address, shipping_address, pos_profile)
+		fetch_payment_terms_template, party_address, company_address, shipping_address, pos_profile)
 
 def _get_party_details(party=None, account=None, party_type="Customer", company=None, posting_date=None,
 	bill_date=None, price_list=None, currency=None, doctype=None, ignore_permissions=False,
-	fetch_payment_terms_template=True, party_address=None, shipping_address=None, pos_profile=None):
+	fetch_payment_terms_template=True, party_address=None, company_address=None,shipping_address=None, pos_profile=None):
 
-	out = frappe._dict(set_account_and_due_date(party, account, party_type, company, posting_date, bill_date, doctype))
-	party = out[party_type.lower()]
+	party_details = frappe._dict(set_account_and_due_date(party, account, party_type, company, posting_date, bill_date, doctype))
+	party = party_details[party_type.lower()]
 
 	if not ignore_permissions and not frappe.has_permission(party_type, "read", party):
 		frappe.throw(_("Not permitted for {0}").format(party), frappe.PermissionError)
@@ -46,76 +46,81 @@
 	party = frappe.get_doc(party_type, party)
 	currency = party.default_currency if party.get("default_currency") else get_company_currency(company)
 
-	party_address, shipping_address = set_address_details(out, party, party_type, doctype, company, party_address, shipping_address)
-	set_contact_details(out, party, party_type)
-	set_other_values(out, party, party_type)
-	set_price_list(out, party, party_type, price_list, pos_profile)
+	party_address, shipping_address = set_address_details(party_details, party, party_type, doctype, company, party_address, company_address, shipping_address)
+	set_contact_details(party_details, party, party_type)
+	set_other_values(party_details, party, party_type)
+	set_price_list(party_details, party, party_type, price_list, pos_profile)
 
-	out["tax_category"] = get_address_tax_category(party.get("tax_category"),
+	party_details["tax_category"] = get_address_tax_category(party.get("tax_category"),
 		party_address, shipping_address if party_type != "Supplier" else party_address)
-	out["taxes_and_charges"] = set_taxes(party.name, party_type, posting_date, company,
-		customer_group=out.customer_group, supplier_group=out.supplier_group, tax_category=out.tax_category,
-		billing_address=party_address, shipping_address=shipping_address)
+
+	if not party_details.get("taxes_and_charges"):
+		party_details["taxes_and_charges"] = set_taxes(party.name, party_type, posting_date, company,
+			customer_group=party_details.customer_group, supplier_group=party_details.supplier_group, tax_category=party_details.tax_category,
+			billing_address=party_address, shipping_address=shipping_address)
 
 	if fetch_payment_terms_template:
-		out["payment_terms_template"] = get_pyt_term_template(party.name, party_type, company)
+		party_details["payment_terms_template"] = get_pyt_term_template(party.name, party_type, company)
 
-	if not out.get("currency"):
-		out["currency"] = currency
+	if not party_details.get("currency"):
+		party_details["currency"] = currency
 
 	# sales team
 	if party_type=="Customer":
-		out["sales_team"] = [{
+		party_details["sales_team"] = [{
 			"sales_person": d.sales_person,
 			"allocated_percentage": d.allocated_percentage or None
 		} for d in party.get("sales_team")]
 
 	# supplier tax withholding category
 	if party_type == "Supplier" and party:
-		out["supplier_tds"] = frappe.get_value(party_type, party.name, "tax_withholding_category")
+		party_details["supplier_tds"] = frappe.get_value(party_type, party.name, "tax_withholding_category")
 
-	return out
+	return party_details
 
-def set_address_details(out, party, party_type, doctype=None, company=None, party_address=None, shipping_address=None):
+def set_address_details(party_details, party, party_type, doctype=None, company=None, party_address=None, company_address=None, shipping_address=None):
 	billing_address_field = "customer_address" if party_type == "Lead" \
 		else party_type.lower() + "_address"
-	out[billing_address_field] = party_address or get_default_address(party_type, party.name)
+	party_details[billing_address_field] = party_address or get_default_address(party_type, party.name)
 	if doctype:
-		out.update(get_fetch_values(doctype, billing_address_field, out[billing_address_field]))
+		party_details.update(get_fetch_values(doctype, billing_address_field, party_details[billing_address_field]))
 	# address display
-	out.address_display = get_address_display(out[billing_address_field])
+	party_details.address_display = get_address_display(party_details[billing_address_field])
 	# shipping address
 	if party_type in ["Customer", "Lead"]:
-		out.shipping_address_name = shipping_address or get_party_shipping_address(party_type, party.name)
-		out.shipping_address = get_address_display(out["shipping_address_name"])
+		party_details.shipping_address_name = shipping_address or get_party_shipping_address(party_type, party.name)
+		party_details.shipping_address = get_address_display(party_details["shipping_address_name"])
 		if doctype:
-			out.update(get_fetch_values(doctype, 'shipping_address_name', out.shipping_address_name))
+			party_details.update(get_fetch_values(doctype, 'shipping_address_name', party_details.shipping_address_name))
 
-	if doctype and doctype in ['Delivery Note', 'Sales Invoice']:
-		out.update(get_company_address(company))
-		if out.company_address:
-			out.update(get_fetch_values(doctype, 'company_address', out.company_address))
-		get_regional_address_details(out, doctype, company)
+	if company_address:
+		party_details.update({'company_address': company_address})
+	else:
+		party_details.update(get_company_address(company))
 
-	elif doctype and doctype == "Purchase Invoice":
-		out.update(get_company_address(company))
-		if out.company_address:
-			out["shipping_address"] = shipping_address or out["company_address"]
-			out.shipping_address_display = get_address_display(out["shipping_address"])
-			out.update(get_fetch_values(doctype, 'shipping_address', out.shipping_address))
-		get_regional_address_details(out, doctype, company)
+	if doctype and doctype in ['Delivery Note', 'Sales Invoice', 'Sales Order']:
+		if party_details.company_address:
+			party_details.update(get_fetch_values(doctype, 'company_address', party_details.company_address))
+		get_regional_address_details(party_details, doctype, company)
 
-	return out.get(billing_address_field), out.shipping_address_name
+	elif doctype and doctype in ["Purchase Invoice", "Purchase Order", "Purchase Receipt"]:
+		if party_details.company_address:
+			party_details["shipping_address"] = shipping_address or party_details["company_address"]
+			party_details.shipping_address_display = get_address_display(party_details["shipping_address"])
+			party_details.update(get_fetch_values(doctype, 'shipping_address', party_details.shipping_address))
+		get_regional_address_details(party_details, doctype, company)
+
+	return party_details.get(billing_address_field), party_details.shipping_address_name
 
 @erpnext.allow_regional
-def get_regional_address_details(out, doctype, company):
+def get_regional_address_details(party_details, doctype, company):
 	pass
 
-def set_contact_details(out, party, party_type):
-	out.contact_person = get_default_contact(party_type, party.name)
+def set_contact_details(party_details, party, party_type):
+	party_details.contact_person = get_default_contact(party_type, party.name)
 
-	if not out.contact_person:
-		out.update({
+	if not party_details.contact_person:
+		party_details.update({
 			"contact_person": None,
 			"contact_display": None,
 			"contact_email": None,
@@ -125,22 +130,22 @@
 			"contact_department": None
 		})
 	else:
-		out.update(get_contact_details(out.contact_person))
+		party_details.update(get_contact_details(party_details.contact_person))
 
-def set_other_values(out, party, party_type):
+def set_other_values(party_details, party, party_type):
 	# copy
 	if party_type=="Customer":
 		to_copy = ["customer_name", "customer_group", "territory", "language"]
 	else:
 		to_copy = ["supplier_name", "supplier_group", "language"]
 	for f in to_copy:
-		out[f] = party.get(f)
+		party_details[f] = party.get(f)
 
 	# fields prepended with default in Customer doctype
 	for f in ['currency'] \
 		+ (['sales_partner', 'commission_rate'] if party_type=="Customer" else []):
 		if party.get("default_" + f):
-			out[f] = party.get("default_" + f)
+			party_details[f] = party.get("default_" + f)
 
 def get_default_price_list(party):
 	"""Return default price list for party (Document object)"""
@@ -155,7 +160,7 @@
 
 	return None
 
-def set_price_list(out, party, party_type, given_price_list, pos=None):
+def set_price_list(party_details, party, party_type, given_price_list, pos=None):
 	# price list
 	price_list = get_permitted_documents('Price List')
 
@@ -173,9 +178,9 @@
 		price_list = get_default_price_list(party) or given_price_list
 
 	if price_list:
-		out.price_list_currency = frappe.db.get_value("Price List", price_list, "currency", cache=True)
+		party_details.price_list_currency = frappe.db.get_value("Price List", price_list, "currency", cache=True)
 
-	out["selling_price_list" if party.doctype=="Customer" else "buying_price_list"] = price_list
+	party_details["selling_price_list" if party.doctype=="Customer" else "buying_price_list"] = price_list
 
 
 def set_account_and_due_date(party, account, party_type, company, posting_date, bill_date, doctype):
diff --git a/erpnext/buying/doctype/purchase_order/regional/india.js b/erpnext/buying/doctype/purchase_order/regional/india.js
new file mode 100644
index 0000000..42d3995
--- /dev/null
+++ b/erpnext/buying/doctype/purchase_order/regional/india.js
@@ -0,0 +1,3 @@
+{% include "erpnext/regional/india/taxes.js" %}
+
+erpnext.setup_auto_gst_taxation('Purchase Order');
\ No newline at end of file
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index ed5bf9b..2a5e6d8 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -246,10 +246,10 @@
 		"on_trash": "erpnext.regional.check_deletion_permission"
 	},
 	'Address': {
-		'validate': ['erpnext.regional.india.utils.validate_gstin_for_india', 'erpnext.regional.italy.utils.set_state_code']
+		'validate': ['erpnext.regional.india.utils.validate_gstin_for_india', 'erpnext.regional.italy.utils.set_state_code', 'erpnext.regional.india.utils.update_gst_category']
 	},
-	('Sales Invoice', 'Purchase Invoice', 'Delivery Note'): {
-		'validate': 'erpnext.regional.india.utils.set_place_of_supply'
+	('Sales Invoice', 'Sales Order', 'Delivery Note', 'Purchase Invoice', 'Purchase Order', 'Purchase Receipt'): {
+		'validate': ['erpnext.regional.india.utils.set_place_of_supply']
 	},
 	"Contact": {
 		"on_trash": "erpnext.support.doctype.issue.issue.update_issue",
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 053cae0..e26b1c8 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -645,6 +645,7 @@
 erpnext.patches.v12_0.set_payment_entry_status
 erpnext.patches.v12_0.update_owner_fields_in_acc_dimension_custom_fields
 erpnext.patches.v12_0.set_default_for_add_taxes_from_item_tax_template
+erpnext.patches.v12_0.add_export_type_field_in_party_master
 erpnext.patches.v12_0.remove_denied_leaves_from_leave_ledger
 erpnext.patches.v12_0.update_price_or_product_discount
 erpnext.patches.v12_0.set_production_capacity_in_workstation
diff --git a/erpnext/patches/v12_0/add_export_type_field_in_party_master.py b/erpnext/patches/v12_0/add_export_type_field_in_party_master.py
new file mode 100644
index 0000000..c565b7e
--- /dev/null
+++ b/erpnext/patches/v12_0/add_export_type_field_in_party_master.py
@@ -0,0 +1,40 @@
+from __future__ import unicode_literals
+import frappe
+from erpnext.regional.india.setup import make_custom_fields
+
+def execute():
+
+	company = frappe.get_all('Company', filters = {'country': 'India'})
+	if not company:
+		return
+
+	make_custom_fields()
+
+	frappe.reload_doctype('Tax Category')
+	frappe.reload_doctype('Sales Taxes and Charges Template')
+	frappe.reload_doctype('Purchase Taxes and Charges Template')
+
+	# Create tax category with inter state field checked
+	tax_category =  frappe.db.get_value('Tax Category', {'name': 'OUT OF STATE'}, 'name')
+
+	if not tax_category:
+		inter_state_category = frappe.get_doc({
+			'doctype': 'Tax Category',
+			'title': 'OUT OF STATE',
+			'is_inter_state': 1
+		}).insert()
+
+		tax_category = inter_state_category.name
+
+	for doctype in ('Sales Taxes and Charges Template', 'Purchase Taxes and Charges Template'):
+		template = frappe.db.get_value(doctype, {'is_inter_state': 1, 'disabled': 0}, ['name'])
+		if template:
+			frappe.db.set_value(doctype, template, 'tax_category', tax_category)
+
+		frappe.db.sql("""
+			DELETE FROM `tabCustom Field`
+			WHERE fieldname = 'is_inter_state'
+			AND dt IN ('Sales Taxes and Charges Template', 'Purchase Taxes and Charges Template')
+		""")
+
+
diff --git a/erpnext/public/js/queries.js b/erpnext/public/js/queries.js
index 84d2113..560a561 100644
--- a/erpnext/public/js/queries.js
+++ b/erpnext/public/js/queries.js
@@ -65,7 +65,7 @@
 				frappe.throw(__("Please set {0}",
 					[__(frappe.meta.get_label(doc.doctype, frappe.dynamic_link.fieldname, doc.name))]));
 			}
-			console.log(frappe.dynamic_link)
+
 			return {
 				query: 'frappe.contacts.doctype.address.address.address_query',
 				filters: {
diff --git a/erpnext/public/js/utils/party.js b/erpnext/public/js/utils/party.js
index a8d3888..99c1b8a 100644
--- a/erpnext/public/js/utils/party.js
+++ b/erpnext/public/js/utils/party.js
@@ -7,6 +7,21 @@
 	if(!method) {
 		method = "erpnext.accounts.party.get_party_details";
 	}
+
+	if (args) {
+		if (in_list(['Sales Invoice', 'Sales Order', 'Delivery Note'], frm.doc.doctype)) {
+			if (frm.doc.company_address && (!args.company_address)) {
+				args.company_address = frm.doc.company_address;
+			}
+		}
+
+		if (in_list(['Purchase Invoice', 'Purchase Order', 'Purchase Receipt'], frm.doc.doctype)) {
+			if (frm.doc.shipping_address && (!args.shipping_address)) {
+				args.shipping_address = frm.doc.shipping_address;
+			}
+		}
+	}
+
 	if(!args) {
 		if((frm.doctype != "Purchase Order" && frm.doc.customer)
 			|| (frm.doc.party_name && in_list(['Quotation', 'Opportunity'], frm.doc.doctype))) {
@@ -30,6 +45,35 @@
 			};
 		}
 
+		if (in_list(['Sales Invoice', 'Sales Order', 'Delivery Note'], frm.doc.doctype)) {
+			if (!args) {
+				args = {
+					party: frm.doc.customer || frm.doc.party_name,
+					party_type: 'Customer'
+				}
+			}
+			if (frm.doc.company_address && (!args.company_address)) {
+				args.company_address = frm.doc.company_address;
+			}
+
+			if (frm.doc.shipping_address_name &&(!args.shipping_address_name)) {
+				args.shipping_address_name = frm.doc.shipping_address_name;
+			}
+		}
+
+		if (in_list(['Purchase Invoice', 'Purchase Order', 'Purchase Receipt'], frm.doc.doctype)) {
+			if (!args) {
+				args = {
+					party: frm.doc.supplier,
+					party_type: 'Supplier'
+				}
+			}
+
+			if (frm.doc.shipping_address && (!args.shipping_address)) {
+				args.shipping_address = frm.doc.shipping_address;
+			}
+		}
+
 		if (args) {
 			args.posting_date = frm.doc.posting_date || frm.doc.transaction_date;
 		}
diff --git a/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py b/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py
index fef73d9..fa6fb70 100644
--- a/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py
+++ b/erpnext/regional/doctype/gstr_3b_report/test_gstr_3b_report.py
@@ -64,7 +64,8 @@
 		self.assertEqual(output["inter_sup"]["unreg_details"][0]["iamt"], 18),
 		self.assertEqual(output["sup_details"]["osup_nil_exmp"]["txval"], 100),
 		self.assertEqual(output["inward_sup"]["isup_details"][0]["inter"], 250)
-		self.assertEqual(output["itc_elg"]["itc_avl"][4]["iamt"], 45)
+		self.assertEqual(output["itc_elg"]["itc_avl"][4]["samt"], 22.50)
+		self.assertEqual(output["itc_elg"]["itc_avl"][4]["camt"], 22.50)
 
 def make_sales_invoice():
 	si = create_sales_invoice(company="_Test Company GST",
@@ -158,10 +159,18 @@
 
 	pi.append("taxes", {
 			"charge_type": "On Net Total",
-			"account_head": "IGST - _GST",
+			"account_head": "CGST - _GST",
 			"cost_center": "Main - _GST",
-			"description": "IGST @ 18.0",
-			"rate": 18
+			"description": "CGST @ 9.0",
+			"rate": 9
+		})
+
+	pi.append("taxes", {
+			"charge_type": "On Net Total",
+			"account_head": "SGST - _GST",
+			"cost_center": "Main - _GST",
+			"description": "SGST @ 9.0",
+			"rate": 9
 		})
 
 	pi.submit()
diff --git a/erpnext/regional/india/__init__.py b/erpnext/regional/india/__init__.py
index 46c874b..0ed98b7 100644
--- a/erpnext/regional/india/__init__.py
+++ b/erpnext/regional/india/__init__.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+from six import iteritems
 
 states = [
  '',
@@ -79,4 +80,6 @@
  "Uttar Pradesh": "09",
  "Uttarakhand": "05",
  "West Bengal": "19",
-}
\ No newline at end of file
+}
+
+number_state_mapping = {v: k for k, v in iteritems(state_numbers)}
\ No newline at end of file
diff --git a/erpnext/regional/india/setup.py b/erpnext/regional/india/setup.py
index 756c17d..14fdba0 100644
--- a/erpnext/regional/india/setup.py
+++ b/erpnext/regional/india/setup.py
@@ -107,7 +107,12 @@
 		dict(fieldname='gst_category', label='GST Category',
 			fieldtype='Select', insert_after='gst_section', print_hide=1,
 			options='\nRegistered Regular\nRegistered Composition\nUnregistered\nSEZ\nOverseas\nUIN Holders',
-			fetch_from='supplier.gst_category', fetch_if_empty=1)
+			fetch_from='supplier.gst_category', fetch_if_empty=1),
+		dict(fieldname='export_type', label='Export Type',
+			fieldtype='Select', insert_after='gst_category', print_hide=1,
+			depends_on='eval:in_list(["SEZ", "Overseas"], doc.gst_category)',
+			options='\nWith Payment of Tax\nWithout Payment of Tax', fetch_from='supplier.export_type',
+			fetch_if_empty=1),
 	]
 
 	sales_invoice_gst_category = [
@@ -116,20 +121,21 @@
 		dict(fieldname='gst_category', label='GST Category',
 			fieldtype='Select', insert_after='gst_section', print_hide=1,
 			options='\nRegistered Regular\nRegistered Composition\nUnregistered\nSEZ\nOverseas\nConsumer\nDeemed Export\nUIN Holders',
-			fetch_from='customer.gst_category', fetch_if_empty=1)
+			fetch_from='customer.gst_category', fetch_if_empty=1),
+		dict(fieldname='export_type', label='Export Type',
+			fieldtype='Select', insert_after='gst_category', print_hide=1,
+			depends_on='eval:in_list(["SEZ", "Overseas", "Deemed Export"], doc.gst_category)',
+			options='\nWith Payment of Tax\nWithout Payment of Tax', fetch_from='customer.export_type',
+			fetch_if_empty=1),
 	]
 
 	invoice_gst_fields = [
 		dict(fieldname='invoice_copy', label='Invoice Copy',
-			fieldtype='Select', insert_after='gst_category', print_hide=1, allow_on_submit=1,
+			fieldtype='Select', insert_after='export_type', print_hide=1, allow_on_submit=1,
 			options='Original for Recipient\nDuplicate for Transporter\nDuplicate for Supplier\nTriplicate for Supplier'),
 		dict(fieldname='reverse_charge', label='Reverse Charge',
 			fieldtype='Select', insert_after='invoice_copy', print_hide=1,
 			options='Y\nN', default='N'),
-		dict(fieldname='export_type', label='Export Type',
-			fieldtype='Select', insert_after='reverse_charge', print_hide=1,
-			depends_on='eval:in_list(["SEZ", "Overseas", "Deemed Export"], doc.gst_category)',
-			options='\nWith Payment of Tax\nWithout Payment of Tax'),
 		dict(fieldname='ecommerce_gstin', label='E-commerce GSTIN',
 			fieldtype='Data', insert_after='export_type', print_hide=1),
 		dict(fieldname='gst_col_break', fieldtype='Column Break', insert_after='ecommerce_gstin'),
@@ -142,13 +148,13 @@
 	purchase_invoice_gst_fields = [
 			dict(fieldname='supplier_gstin', label='Supplier GSTIN',
 				fieldtype='Data', insert_after='supplier_address',
-				fetch_from='supplier_address.gstin', print_hide=1),
+				fetch_from='supplier_address.gstin', print_hide=1, read_only=1),
 			dict(fieldname='company_gstin', label='Company GSTIN',
 				fieldtype='Data', insert_after='shipping_address_display',
-				fetch_from='shipping_address.gstin', print_hide=1),
+				fetch_from='shipping_address.gstin', print_hide=1, read_only=1),
 			dict(fieldname='place_of_supply', label='Place of Supply',
 				fieldtype='Data', insert_after='shipping_address',
-				print_hide=1, read_only=0),
+				print_hide=1, read_only=1),
 		]
 
 	purchase_invoice_itc_fields = [
@@ -167,17 +173,17 @@
 
 	sales_invoice_gst_fields = [
 			dict(fieldname='billing_address_gstin', label='Billing Address GSTIN',
-				fieldtype='Data', insert_after='customer_address',
+				fieldtype='Data', insert_after='customer_address', read_only=1,
 				fetch_from='customer_address.gstin', print_hide=1),
 			dict(fieldname='customer_gstin', label='Customer GSTIN',
 				fieldtype='Data', insert_after='shipping_address_name',
 				fetch_from='shipping_address_name.gstin', print_hide=1),
 			dict(fieldname='place_of_supply', label='Place of Supply',
 				fieldtype='Data', insert_after='customer_gstin',
-				print_hide=1, read_only=0),
+				print_hide=1, read_only=1),
 			dict(fieldname='company_gstin', label='Company GSTIN',
 				fieldtype='Data', insert_after='company_address',
-				fetch_from='company_address.gstin', print_hide=1),
+				fetch_from='company_address.gstin', print_hide=1, read_only=1),
 		]
 
 	sales_invoice_shipping_fields = [
@@ -194,7 +200,11 @@
 
 	inter_state_gst_field = [
 		dict(fieldname='is_inter_state', label='Is Inter State',
-			fieldtype='Check', insert_after='disabled', print_hide=1)
+			fieldtype='Check', insert_after='disabled', print_hide=1),
+		dict(fieldname='tax_category_column_break', fieldtype='Column Break',
+			insert_after='is_inter_state'),
+		dict(fieldname='gst_state', label='Source State', fieldtype='Select',
+			options='\n'.join(states), insert_after='company')
 	]
 
 	ewaybill_fields = [
@@ -374,8 +384,7 @@
 		'Sales Invoice': sales_invoice_gst_category + invoice_gst_fields + sales_invoice_shipping_fields + sales_invoice_gst_fields + si_ewaybill_fields,
 		'Delivery Note': sales_invoice_gst_fields + ewaybill_fields + sales_invoice_shipping_fields,
 		'Sales Order': sales_invoice_gst_fields,
-		'Sales Taxes and Charges Template': inter_state_gst_field,
-		'Purchase Taxes and Charges Template': inter_state_gst_field,
+		'Tax Category': inter_state_gst_field,
 		'Item': [
 			dict(fieldname='gst_hsn_code', label='HSN/SAC',
 				fieldtype='Link', options='GST HSN Code', insert_after='item_group'),
@@ -459,6 +468,15 @@
 				'insert_after': 'gst_transporter_id',
 				'options': 'Registered Regular\nRegistered Composition\nUnregistered\nSEZ\nOverseas\nUIN Holders',
 				'default': 'Unregistered'
+			},
+			{
+				'fieldname': 'export_type',
+				'label': 'Export Type',
+				'fieldtype': 'Select',
+				'insert_after': 'gst_category',
+				'default': 'Without Payment of Tax',
+				'depends_on':'eval:in_list(["SEZ", "Overseas"], doc.gst_category)',
+				'options': '\nWith Payment of Tax\nWithout Payment of Tax'
 			}
 		],
 		'Customer': [
@@ -469,6 +487,15 @@
 				'insert_after': 'customer_type',
 				'options': 'Registered Regular\nRegistered Composition\nUnregistered\nSEZ\nOverseas\nConsumer\nDeemed Export\nUIN Holders',
 				'default': 'Unregistered'
+			},
+			{
+				'fieldname': 'export_type',
+				'label': 'Export Type',
+				'fieldtype': 'Select',
+				'insert_after': 'gst_category',
+				'default': 'Without Payment of Tax',
+				'depends_on':'eval:in_list(["SEZ", "Overseas", "Deemed Export"], doc.gst_category)',
+				'options': '\nWith Payment of Tax\nWithout Payment of Tax'
 			}
 		]
 	}
diff --git a/erpnext/regional/india/taxes.js b/erpnext/regional/india/taxes.js
new file mode 100644
index 0000000..1e59032
--- /dev/null
+++ b/erpnext/regional/india/taxes.js
@@ -0,0 +1,41 @@
+erpnext.setup_auto_gst_taxation = (doctype) => {
+	frappe.ui.form.on(doctype, {
+		company_address: function(frm) {
+			frm.trigger('get_tax_template');
+		},
+		shipping_address: function(frm) {
+			frm.trigger('get_tax_template');
+		},
+		tax_category: function(frm) {
+			frm.trigger('get_tax_template');
+		},
+		get_tax_template: function(frm) {
+			let party_details = {
+				'shipping_address': frm.doc.shipping_address || '',
+				'shipping_address_name': frm.doc.shipping_address_name || '',
+				'customer_address': frm.doc.customer_address || '',
+				'customer': frm.doc.customer,
+				'supplier': frm.doc.supplier,
+				'supplier_gstin': frm.doc.supplier_gstin,
+				'company_gstin': frm.doc.company_gstin,
+				'tax_category': frm.doc.tax_category
+			};
+
+			frappe.call({
+				method: 'erpnext.regional.india.utils.get_regional_address_details',
+				args: {
+					party_details: JSON.stringify(party_details),
+					doctype: frm.doc.doctype,
+					company: frm.doc.company,
+					return_taxes: 1
+				},
+				callback: function(r) {
+					if(r.message) {
+						frm.set_value('taxes_and_charges', r.message.taxes_and_charges);
+					}
+				}
+			});
+		}
+	});
+};
+
diff --git a/erpnext/regional/india/utils.py b/erpnext/regional/india/utils.py
index aae0779..77bcc80 100644
--- a/erpnext/regional/india/utils.py
+++ b/erpnext/regional/india/utils.py
@@ -7,6 +7,8 @@
 from erpnext.controllers.accounts_controller import get_taxes_and_charges
 from erpnext.hr.utils import get_salary_assignment
 from erpnext.hr.doctype.salary_structure.salary_structure import make_salary_slip
+from erpnext.regional.india import number_state_mapping
+from six import string_types
 
 def validate_gstin_for_india(doc, method):
 	if hasattr(doc, 'gst_state') and doc.gst_state:
@@ -46,6 +48,14 @@
 			frappe.throw(_("Invalid GSTIN! First 2 digits of GSTIN should match with State number {0}.")
 				.format(doc.gst_state_number))
 
+def update_gst_category(doc, method):
+	for link in doc.links:
+		if link.link_doctype in ['Customer', 'Supplier']:
+			if doc.get('gstin'):
+				frappe.db.sql("""
+					UPDATE `tab{0}` SET gst_category = %s WHERE name = %s AND gst_category = 'Unregistered'
+				""".format(link.link_doctype), ("Registered Regular", link.link_name)) #nosec
+
 def set_gst_state_and_state_number(doc):
 	if not doc.gst_state:
 		if not doc.state:
@@ -122,44 +132,106 @@
 	'''test function'''
 	return 'overridden'
 
-def get_place_of_supply(out, doctype):
+def get_place_of_supply(party_details, doctype):
 	if not frappe.get_meta('Address').has_field('gst_state'): return
 
-	if doctype in ("Sales Invoice", "Delivery Note"):
-		address_name = out.shipping_address_name or out.customer_address
-	elif doctype == "Purchase Invoice":
-		address_name = out.shipping_address or out.supplier_address
+	if doctype in ("Sales Invoice", "Delivery Note", "Sales Order"):
+		address_name = party_details.shipping_address_name or party_details.customer_address
+	elif doctype in ("Purchase Invoice", "Purchase Order", "Purchase Receipt"):
+		address_name = party_details.shipping_address or party_details.supplier_address
 
 	if address_name:
 		address = frappe.db.get_value("Address", address_name, ["gst_state", "gst_state_number"], as_dict=1)
 		if address and address.gst_state and address.gst_state_number:
 			return cstr(address.gst_state_number) + "-" + cstr(address.gst_state)
 
-def get_regional_address_details(out, doctype, company):
-	out.place_of_supply = get_place_of_supply(out, doctype)
+@frappe.whitelist()
+def get_regional_address_details(party_details, doctype, company, return_taxes=None):
 
-	if not out.place_of_supply: return
+	if isinstance(party_details, string_types):
+		party_details = json.loads(party_details)
+		party_details = frappe._dict(party_details)
 
-	if doctype in ("Sales Invoice", "Delivery Note"):
+	party_details.place_of_supply = get_place_of_supply(party_details, doctype)
+	if doctype in ("Sales Invoice", "Delivery Note", "Sales Order"):
 		master_doctype = "Sales Taxes and Charges Template"
-		if not out.company_gstin:
-			return
-	elif doctype == "Purchase Invoice":
-		master_doctype = "Purchase Taxes and Charges Template"
-		if not out.supplier_gstin:
+
+		get_tax_template_for_sez(party_details, master_doctype, company, 'Customer')
+		get_tax_template_based_on_category(master_doctype, company, party_details)
+
+		if party_details.get('taxes_and_charges') and return_taxes:
+			return party_details
+
+		if not party_details.company_gstin:
 			return
 
-	if ((doctype in ("Sales Invoice", "Delivery Note") and out.company_gstin
-		and out.company_gstin[:2] != out.place_of_supply[:2]) or (doctype == "Purchase Invoice"
-		and out.supplier_gstin and out.supplier_gstin[:2] != out.place_of_supply[:2])):
-		default_tax = frappe.db.get_value(master_doctype, {"company": company, "is_inter_state":1, "disabled":0})
+	elif doctype in ("Purchase Invoice", "Purchase Order", "Purchase Receipt"):
+		master_doctype = "Purchase Taxes and Charges Template"
+
+		get_tax_template_for_sez(party_details, master_doctype, company, 'Supplier')
+		get_tax_template_based_on_category(master_doctype, company, party_details)
+
+		if party_details.get('taxes_and_charges') and return_taxes:
+			return party_details
+
+		if not party_details.supplier_gstin:
+			return
+
+	if not party_details.place_of_supply: return
+
+	if ((doctype in ("Sales Invoice", "Delivery Note", "Sales Order") and party_details.company_gstin
+		and party_details.company_gstin[:2] != party_details.place_of_supply[:2]) or (doctype in ("Purchase Invoice",
+		"Purchase Order", "Purchase Receipt") and party_details.supplier_gstin and party_details.supplier_gstin[:2] != party_details.place_of_supply[:2])):
+		default_tax = get_tax_template(master_doctype, company, 1, party_details.company_gstin[:2])
 	else:
-		default_tax = frappe.db.get_value(master_doctype, {"company": company, "disabled":0, "is_default": 1})
+		default_tax = get_tax_template(master_doctype, company, 0, party_details.company_gstin[:2])
 
 	if not default_tax:
 		return
-	out["taxes_and_charges"] = default_tax
-	out.taxes = get_taxes_and_charges(master_doctype, default_tax)
+	party_details["taxes_and_charges"] = default_tax
+	party_details.taxes = get_taxes_and_charges(master_doctype, default_tax)
+
+	if return_taxes:
+		return party_details
+
+def get_tax_template_based_on_category(master_doctype, company, party_details):
+	if not party_details.get('tax_category'):
+		return
+
+	default_tax = frappe.db.get_value(master_doctype, {'company': company, 'tax_category': party_details.get('tax_category')},
+		'name')
+
+	if default_tax:
+		party_details["taxes_and_charges"] = default_tax
+		party_details.taxes = get_taxes_and_charges(master_doctype, default_tax)
+
+def get_tax_template(master_doctype, company, is_inter_state, state_code):
+	tax_categories = frappe.get_all('Tax Category', fields = ['name', 'is_inter_state', 'gst_state'],
+		filters = {'is_inter_state': is_inter_state})
+
+	default_tax = ''
+
+	for tax_category in tax_categories:
+		if tax_category.gst_state == number_state_mapping[state_code] or \
+	 		(not default_tax and not tax_category.gst_state):
+			default_tax = frappe.db.get_value(master_doctype,
+				{'disabled': 0, 'tax_category': tax_category.name}, 'name')
+
+	return default_tax
+
+def get_tax_template_for_sez(party_details, master_doctype, company, party_type):
+
+	gst_details = frappe.db.get_value(party_type, {'name': party_details.get(frappe.scrub(party_type))},
+			['gst_category', 'export_type'], as_dict=1)
+
+	if gst_details:
+		if gst_details.gst_category == 'SEZ' and gst_details.export_type == 'With Payment of Tax':
+			default_tax = frappe.db.get_value(master_doctype, {"company": company, "is_inter_state":1, "disabled":0,
+				"gst_state": number_state_mapping[party_details.company_gstin[:2]]})
+
+			party_details["taxes_and_charges"] = default_tax
+			party_details.taxes = get_taxes_and_charges(master_doctype, default_tax)
+
 
 def calculate_annual_eligible_hra_exemption(doc):
 	basic_component = frappe.get_cached_value('Company',  doc.company,  "basic_component")
@@ -555,7 +627,7 @@
 		filters={"parent": "GST Settings", "company": company},
 		fields=["cgst_account", "sgst_account", "igst_account", "cess_account"])
 
-	if not gst_settings_accounts:
+	if not gst_settings_accounts and not frappe.flags.in_test:
 		frappe.throw(_("Please set GST Accounts in GST Settings"))
 
 	for d in gst_settings_accounts:
diff --git a/erpnext/selling/doctype/sales_order/regional/india.js b/erpnext/selling/doctype/sales_order/regional/india.js
new file mode 100644
index 0000000..c11cfcc
--- /dev/null
+++ b/erpnext/selling/doctype/sales_order/regional/india.js
@@ -0,0 +1,3 @@
+{% include "erpnext/regional/india/taxes.js" %}
+
+erpnext.setup_auto_gst_taxation('Sales Order');
diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index e97a4ee..2112a41 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -578,8 +578,12 @@
 		target.run_method("set_po_nos")
 		target.run_method("calculate_taxes_and_totals")
 
-		# set company address
-		target.update(get_company_address(target.company))
+		if source.company_address:
+			target.update({'company_address': source.company_address})
+		else:
+			# set company address
+			target.update(get_company_address(target.company))
+
 		if target.company_address:
 			target.update(get_fetch_values("Delivery Note", 'company_address', target.company_address))
 
@@ -645,8 +649,12 @@
 		target.run_method("set_po_nos")
 		target.run_method("calculate_taxes_and_totals")
 
-		# set company address
-		target.update(get_company_address(target.company))
+		if source.company_address:
+			target.update({'company_address': source.company_address})
+		else:
+			# set company address
+			target.update(get_company_address(target.company))
+
 		if target.company_address:
 			target.update(get_fetch_values("Sales Invoice", 'company_address', target.company_address))
 
diff --git a/erpnext/setup/doctype/company/company.py b/erpnext/setup/doctype/company/company.py
index 04e8a83..2eee919 100644
--- a/erpnext/setup/doctype/company/company.py
+++ b/erpnext/setup/doctype/company/company.py
@@ -14,6 +14,8 @@
 from frappe.contacts.address_and_contact import load_address_and_contact
 from frappe.utils.nestedset import NestedSet
 
+import functools
+
 class Company(NestedSet):
 	nsm_parent_field = 'parent_company'
 
@@ -560,3 +562,26 @@
 		return json.loads(history) if history and '{' in history else {}
 
 	return date_to_value_dict
+
+@frappe.whitelist()
+def get_default_company_address(name, sort_key='is_primary_address', existing_address=None):
+	if sort_key not in ['is_shipping_address', 'is_primary_address']:
+		return None
+
+	out = frappe.db.sql(""" SELECT
+			addr.name, addr.%s
+		FROM
+			`tabAddress` addr, `tabDynamic Link` dl
+		WHERE
+			dl.parent = addr.name and dl.link_doctype = 'Company' and
+			dl.link_name = %s and ifnull(addr.disabled, 0) = 0
+		""" %(sort_key, '%s'), (name)) #nosec
+
+	if existing_address:
+		if existing_address in [d[0] for d in out]:
+			return existing_address
+
+	if out:
+		return sorted(out, key = functools.cmp_to_key(lambda x,y: cmp(y[1], x[1])))[0][0]
+	else:
+		return None
\ No newline at end of file
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index c98dfe3..39aad2e 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -424,7 +424,12 @@
 		target.run_method("calculate_taxes_and_totals")
 
 		# set company address
-		target.update(get_company_address(target.company))
+		if source.company_address:
+			target.update({'company_address': source.company_address})
+		else:
+			# set company address
+			target.update(get_company_address(target.company))
+
 		if target.company_address:
 			target.update(get_fetch_values("Sales Invoice", 'company_address', target.company_address))
 
diff --git a/erpnext/stock/doctype/delivery_note/regional/india.js b/erpnext/stock/doctype/delivery_note/regional/india.js
new file mode 100644
index 0000000..22f4716
--- /dev/null
+++ b/erpnext/stock/doctype/delivery_note/regional/india.js
@@ -0,0 +1,4 @@
+{% include "erpnext/regional/india/taxes.js" %}
+
+erpnext.setup_auto_gst_taxation('Delivery Note');
+
diff --git a/erpnext/stock/doctype/purchase_receipt/regional/india.js b/erpnext/stock/doctype/purchase_receipt/regional/india.js
new file mode 100644
index 0000000..b4f1201
--- /dev/null
+++ b/erpnext/stock/doctype/purchase_receipt/regional/india.js
@@ -0,0 +1,3 @@
+{% include "erpnext/regional/india/taxes.js" %}
+
+erpnext.setup_auto_gst_taxation('Purchase Receipt');
\ No newline at end of file