diff --git a/EvoCalculator.Core.PostCalculation/v2/Columns/Next/SumIRRColumn/SumIRRColumnVT2.cs b/EvoCalculator.Core.PostCalculation/v2/Columns/Next/SumIRRColumn/SumIRRColumnVT2.cs
index 1a01653..cf7650f 100644
--- a/EvoCalculator.Core.PostCalculation/v2/Columns/Next/SumIRRColumn/SumIRRColumnVT2.cs
+++ b/EvoCalculator.Core.PostCalculation/v2/Columns/Next/SumIRRColumn/SumIRRColumnVT2.cs
@@ -152,8 +152,7 @@ namespace EvoCalculator.Core.PostCalculation.v2.Columns.Next
             goalSeek.SeekResult(requiredValue + 0.00001m,
                 new GoalSeekOptions(
                     startingStabPoint:
-                    (_nextValues.BaseCost - _currentTablePayments[0].SumPayment) /
-                    (_preparedValues.Nmper.Next - 1),
+                    _currentTablePayments[_preparedValues.EditPaymentNumber].SumPayment,
                     maximumAttempts: 1000,
                     initialTineSpacing: 100
                     // , focusPercentage: 50