diff --git a/src/client/stores/CalculationStore/Effects/actions/calculate/validate/elements.ts b/src/client/stores/CalculationStore/Effects/actions/calculate/validate/elements.ts
index de60b9e..f2affab 100644
--- a/src/client/stores/CalculationStore/Effects/actions/calculate/validate/elements.ts
+++ b/src/client/stores/CalculationStore/Effects/actions/calculate/validate/elements.ts
@@ -123,7 +123,7 @@ const customConditions: TElements<ValidationCondition> = {
   tbxFirstPaymentRub: calculationStore => {
     const { firstPaymentRub, subsidySum } = calculationStore.values;
     return {
-      isValid: firstPaymentRub - subsidySum > 0,
+      isValid: firstPaymentRub - subsidySum >= 0,
       message:
         'Первый платеж с учетом субсидии получается отрицательный, увеличьте первый платеж',
     };