diff --git a/apps/web/process/configurator/reactions/values.ts b/apps/web/process/configurator/reactions/values.ts
index 6832159..df8f9b1 100644
--- a/apps/web/process/configurator/reactions/values.ts
+++ b/apps/web/process/configurator/reactions/values.ts
@@ -161,6 +161,7 @@ export default function valuesReactions({ store, apolloClient }: ProcessContext)
     async (productId) => {
       if (!productId) {
         $calculation.element('cbxPartialVAT').unblock();
+        $calculation.element('cbxPartialVAT').unblock();
 
         return;
       }
@@ -178,6 +179,13 @@ export default function valuesReactions({ store, apolloClient }: ProcessContext)
       } else {
         $calculation.element('cbxFloatingRate').unblock();
       }
+
+      // eslint-disable-next-line no-negated-condition
+      if (!evo_baseproduct?.evo_sale_without_nds) {
+        $calculation.element('cbxPartialVAT').setValue(false).block();
+      } else {
+        $calculation.element('cbxPartialVAT').unblock();
+      }
     }
   );