diff --git a/erpnext/controllers/buying_controller.py b/erpnext/controllers/buying_controller.py
index c0f37455a08..584266d53b1 100644
--- a/erpnext/controllers/buying_controller.py
+++ b/erpnext/controllers/buying_controller.py
@@ -308,7 +308,12 @@ class BuyingController(SubcontractingController):
 
 					rate = flt(outgoing_rate * (d.conversion_factor or 1), d.precision("rate"))
 				else:
-					rate = frappe.db.get_value(ref_doctype, d.get(frappe.scrub(ref_doctype)), "rate")
+					field = "incoming_rate" if self.get("is_internal_supplier") else "rate"
+					rate = flt(
+						frappe.db.get_value(ref_doctype, d.get(frappe.scrub(ref_doctype)), field)
+						* (d.conversion_factor or 1),
+						d.precision("rate"),
+					)
 
 				if self.is_internal_transfer():
 					if rate != d.rate: