diff --git a/src/controllers/08-credit-note-controller.ts b/src/controllers/08-credit-note-controller.ts
index 1b3c75d..7cd029e 100644
--- a/src/controllers/08-credit-note-controller.ts
+++ b/src/controllers/08-credit-note-controller.ts
@@ -348,8 +348,7 @@ export class CreditNoteController extends Controller {
       ).length;
 
       const price =
-        c.productService.pricePerUnit *
-          (1 + (c.productService.product.serviceChargeCalcVat ? VAT_DEFAULT : 0)) -
+        c.productService.pricePerUnit * (1 + (c.productService.vat > 0 ? VAT_DEFAULT : 0)) -
         c.productService.discount;
 
       if (serviceChargeStepCount && successCount) {
@@ -542,8 +541,7 @@ export class CreditNoteController extends Controller {
       ).length;
 
       const price =
-        c.productService.pricePerUnit *
-          (1 + (c.productService.product.serviceChargeCalcVat ? VAT_DEFAULT : 0)) -
+        c.productService.pricePerUnit * (1 + (c.productService.vat > 0 ? VAT_DEFAULT : 0)) -
         c.productService.discount;
 
       if (serviceChargeStepCount && successCount) {