diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index bf1c139..6985c80 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -70,6 +70,7 @@
 						if item.rate_with_margin > 0 else item.rate
 
 				item.net_rate = item.rate
+				item.discount_amount = item.price_list_rate - item.rate
 				item.amount = flt(item.rate * item.qty,	item.precision("amount"))
 				item.net_amount = item.amount