diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index 220dafb2e45..f7bf732e8e8 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -1427,6 +1427,8 @@ def make_purchase_order(source_name, selected_items=None, target_doc=None):
 			target.customer = target.customer_name = target.shipping_address = None
 
 		target.run_method("set_missing_values")
+		if not target.taxes:
+			target.append_taxes_from_item_tax_template()
 		target.run_method("calculate_taxes_and_totals")
 
 	def update_item(source, target, source_parent):