diff --git a/EvoCalculator.Core.Calculation/v2/Columns/SumColumn.cs b/EvoCalculator.Core.Calculation/v2/Columns/SumColumn.cs
index 0bf573e..b3989ca 100644
--- a/EvoCalculator.Core.Calculation/v2/Columns/SumColumn.cs
+++ b/EvoCalculator.Core.Calculation/v2/Columns/SumColumn.cs
@@ -21,6 +21,6 @@ public class SumColumn : v1.Columns.SumColumn
 
         for (var i = 2; i < Values.Length - 1; i++) Values[i] = x * (decimal) _percentPaymentColumn.Values[i] / 100;
 
-        Values[^1] = _preparedValues.LastPaymentSum;
+        Values[^1] = _preparedValues.LastPaymentFix ? _preparedValues.LastPaymentSum : Values[^2];
     }
 }
\ No newline at end of file
diff --git a/EvoCalculator.Core.Models/Calculation/Models/Prepared/PreparedValues.cs b/EvoCalculator.Core.Models/Calculation/Models/Prepared/PreparedValues.cs
index 6ee5415..e85d2e2 100644
--- a/EvoCalculator.Core.Models/Calculation/Models/Prepared/PreparedValues.cs
+++ b/EvoCalculator.Core.Models/Calculation/Models/Prepared/PreparedValues.cs
@@ -38,6 +38,7 @@ public class PreparedValues
     public decimal FirstPaymentWithNdsAbs { get; set; }
     public double LastPayment { get; set; }
     public decimal LastPaymentSum { get; set; }
+    public bool LastPaymentFix { get; set; }
     public int ScheduleOfPayments { get; set; }
     public decimal ComissionRub { get; set; }
     public decimal PlPrice { get; set; }