diff --git a/erpnext/accounts/doctype/payment_request/payment_request.py b/erpnext/accounts/doctype/payment_request/payment_request.py
index bd24c09ce57..e82cbdc8be1 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/payment_request.py
@@ -672,7 +672,12 @@ def get_amount(ref_doc, payment_account=None):
 
 	dt = ref_doc.doctype
 	if dt in ["Sales Order", "Purchase Order"]:
-		grand_total = (flt(ref_doc.rounded_total) or flt(ref_doc.grand_total)) - ref_doc.advance_paid
+		advance_amount = flt(ref_doc.advance_paid)
+		if ref_doc.party_account_currency != ref_doc.currency:
+			advance_amount = flt(flt(ref_doc.advance_paid) / ref_doc.conversion_rate)
+
+		grand_total = (flt(ref_doc.rounded_total) or flt(ref_doc.grand_total)) - advance_amount
+
 	elif dt in ["Sales Invoice", "Purchase Invoice"]:
 		if (
 			dt == "Sales Invoice"