diff --git a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
index df6d483..1b1bb3b 100644
--- a/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/test_sales_invoice.py
@@ -1963,6 +1963,54 @@
 		self.assertEqual(value_details['TotInvVal'], si.base_grand_total)
 		self.assertTrue(einvoice['EwbDtls'])
 
+	def test_item_tax_validity(self):
+		item = frappe.get_doc("Item", "_Test Item 2")
+
+		if item.taxes:
+			item.taxes = []
+			item.save()
+
+		item.append("taxes", {
+			"item_tax_template": "_Test Item Tax Template 1 - _TC",
+			"valid_from": add_days(nowdate(), 1)
+		})
+
+		item.save()
+
+		sales_invoice = create_sales_invoice(item = "_Test Item 2", do_not_save=1)
+		sales_invoice.items[0].item_tax_template = "_Test Item Tax Template 1 - _TC"
+		self.assertRaises(frappe.ValidationError, sales_invoice.save)
+
+		item.taxes = []
+		item.save()
+
+	def test_item_tax_net_range(self):
+		item = create_item("T Shirt")
+
+		item.set('taxes', [])
+		item.append("taxes", {
+			"item_tax_template": "_Test Account Excise Duty @ 10 - _TC",
+			"minimum_net_rate": 0,
+			"maximum_net_rate": 500
+		})
+
+		item.append("taxes", {
+			"item_tax_template": "_Test Account Excise Duty @ 12 - _TC",
+			"minimum_net_rate": 501,
+			"maximum_net_rate": 1000
+		})
+
+		item.save()
+
+		sales_invoice = create_sales_invoice(item = "T Shirt", rate=700, do_not_submit=True)
+		self.assertEqual(sales_invoice.items[0].item_tax_template, "_Test Account Excise Duty @ 12 - _TC")
+
+		# Apply discount
+		sales_invoice.apply_discount_on = 'Net Total'
+		sales_invoice.discount_amount = 300
+		sales_invoice.save()
+		self.assertEqual(sales_invoice.items[0].item_tax_template, "_Test Account Excise Duty @ 10 - _TC")
+
 def make_test_address_for_ewaybill():
 	if not frappe.db.exists('Address', '_Test Address for Eway bill-Billing'):
 		address = frappe.get_doc({
@@ -2085,27 +2133,6 @@
 		doc.assertEqual(expected_gle[i][2], gle.credit)
 		doc.assertEqual(getdate(expected_gle[i][3]), gle.posting_date)
 
-	def test_item_tax_validity(self):
-		item = frappe.get_doc("Item", "_Test Item 2")
-
-		if item.taxes:
-			item.taxes = []
-			item.save()
-
-		item.append("taxes", {
-			"item_tax_template": "_Test Item Tax Template 1 - _TC",
-			"valid_from": add_days(nowdate(), 1)
-		})
-
-		item.save()
-
-		sales_invoice = create_sales_invoice(item = "_Test Item 2", do_not_save=1)
-		sales_invoice.items[0].item_tax_template = "_Test Item Tax Template 1 - _TC"
-		self.assertRaises(frappe.ValidationError, sales_invoice.save)
-
-		item.taxes = []
-		item.save()
-
 def create_sales_invoice(**args):
 	si = frappe.new_doc("Sales Invoice")
 	args = frappe._dict(args)
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 60f468e..0420ea7 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -493,7 +493,7 @@
 
 	def validate_item_tax_net_rate_range(self):
 		for tax in self.get('taxes'):
-			if tax.maximum_net_rate < tax.minimum_net_rate:
+			if flt(tax.maximum_net_rate) < flt(tax.minimum_net_rate):
 				frappe.throw(_("Row #{0}: Maximum Net Rate cannot be greater than Minimum Net Rate"))
 
 	def update_template_tables(self):