diff --git a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
index 2d169f70aa0..7f79724f3bc 100644
--- a/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
+++ b/erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py
@@ -326,6 +326,9 @@ def get_advance_vouchers(
 		"party": ["in", parties],
 	}
 
+	if party_type == "Customer":
+		filters.update({"against_voucher": ["is", "not set"]})
+
 	if company:
 		filters["company"] = company
 	if from_date and to_date: