diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index c8d30c8..10e1d92 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -693,8 +693,9 @@
 			total = 0
 			for d in self.get("payment_schedule"):
 				total += flt(d.payment_amount)
+			total = flt(total, self.precision("grand_total"))
 
-			grand_total = self.get("rounded_total") or self.grand_total
+			grand_total = flt(self.get("rounded_total") or self.grand_total, self.precision('grand_total'))
 			if total != grand_total:
 				frappe.throw(_("Total Payment Amount in Payment Schedule must be equal to Grand / Rounded Total"))