diff --git a/apps/web/process/supplier-agent/reactions/supplier.ts b/apps/web/process/supplier-agent/reactions/supplier.ts
index 3632809..9b4bbff 100644
--- a/apps/web/process/supplier-agent/reactions/supplier.ts
+++ b/apps/web/process/supplier-agent/reactions/supplier.ts
@@ -171,8 +171,10 @@ export function common({ store, apolloClient }: ProcessContext) {
   {
     // eslint-disable-next-line no-inner-declarations
     function unblock() {
-      $calculation.element('cbxPartialVAT').unblock();
-      $calculation.element('tbxVATInLeaseObjectPrice').unblock();
+      const cbxPartialVAT = $calculation.element('cbxPartialVAT');
+      cbxPartialVAT.unblock();
+      if (cbxPartialVAT.getValue()) $calculation.element('tbxVATInLeaseObjectPrice').unblock();
+
       $calculation.element('cbxInsDecentral').unblock();
       $calculation.element('selectDealerPerson').unblock();
       $calculation.element('selectDealerRewardCondition').unblock();
@@ -180,9 +182,12 @@ export function common({ store, apolloClient }: ProcessContext) {
       $calculation.element('selectDealerBrokerRewardCondition').unblock();
     }
 
+    /**
+     * @see 'apps/web/process/used-pl/reactions.ts:common (40)'
+     */
     reaction(
-      () => $calculation.element('selectDealerPerson').getValue(),
-      async (dealerPersonId) => {
+      () => $calculation.$values.getValues(['dealerPerson', 'partialVAT']),
+      async ({ dealerPerson: dealerPersonId }) => {
         if (!dealerPersonId) {
           unblock();