diff --git a/process/payments/reactions.ts b/process/payments/reactions.ts
index f1ee5e7..42c4e26 100644
--- a/process/payments/reactions.ts
+++ b/process/payments/reactions.ts
@@ -71,4 +71,53 @@ export default function paymentsReactions(
       fireImmediately: true,
     }
   );
+
+  /**
+   * Равноубывающий
+   */
+  reaction(
+    () => {
+      const graphType = $calculation.getElementValue('radioGraphType');
+      const leasingPeriod = $calculation.getElementValue('tbxLeasingPeriod');
+      const parmentsDecreasePercent = $calculation.getElementValue('tbxParmentsDecreasePercent');
+
+      return {
+        graphType,
+        leasingPeriod,
+        parmentsDecreasePercent,
+      };
+    },
+    ({ graphType, leasingPeriod, parmentsDecreasePercent }) => {
+      if (graphType === 100_000_002) {
+        const middleValues: Row[] = Array.from(
+          {
+            length: leasingPeriod - 2,
+          },
+          (_, k) => {
+            const payment = 100 * (parmentsDecreasePercent / 100) ** k;
+
+            return {
+              value: Number(payment.toFixed(2)),
+              status: 'Disabled',
+            };
+          }
+        );
+
+        const firstPaymentPerc = $calculation.getElementValue('tbxFirstPaymentPerc');
+        const lastPaymentPerc = $calculation.getElementValue('tbxLastPaymentPerc');
+
+        $tables.payments.setRows([
+          {
+            value: firstPaymentPerc,
+            status: 'Disabled',
+          },
+          ...middleValues,
+          {
+            value: lastPaymentPerc,
+            status: 'Disabled',
+          },
+        ]);
+      }
+    }
+  );
 }