diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index 96284d612f..f9f68a119b 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -54,6 +54,7 @@ class calculate_taxes_and_totals(object):
 		if self.doc.apply_discount_on == "Grand Total" and self.doc.get("is_cash_or_non_trade_discount"):
 			self.doc.grand_total -= self.doc.discount_amount
 			self.doc.base_grand_total -= self.doc.base_discount_amount
+			self.doc.rounding_adjustment = self.doc.base_rounding_adjustment = 0.0
 			self.set_rounded_total()
 
 		self.calculate_shipping_charges()
diff --git a/erpnext/public/js/controllers/taxes_and_totals.js b/erpnext/public/js/controllers/taxes_and_totals.js
index 6b613ce9ec..d24c4e6075 100644
--- a/erpnext/public/js/controllers/taxes_and_totals.js
+++ b/erpnext/public/js/controllers/taxes_and_totals.js
@@ -43,6 +43,9 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		if (this.frm.doc.apply_discount_on == "Grand Total" && this.frm.doc.is_cash_or_non_trade_discount) {
 			this.frm.doc.grand_total -= this.frm.doc.discount_amount;
 			this.frm.doc.base_grand_total -= this.frm.doc.base_discount_amount;
+			this.frm.doc.rounding_adjustment = 0;
+			this.frm.doc.base_rounding_adjustment = 0;
+			this.set_rounded_total();
 		}
 
 		await this.calculate_shipping_charges();