diff --git a/EvoCalculator.Core.Constants/Calculation.cs b/EvoCalculator.Core.Constants/Calculation.cs
index c3be457..fbfdd57 100644
--- a/EvoCalculator.Core.Constants/Calculation.cs
+++ b/EvoCalculator.Core.Constants/Calculation.cs
@@ -12,5 +12,5 @@ public class Calculation
     public int MaxOnePolicePeriod = 16;
     public double VatValue = 0.2;
     public decimal MinBonus = 100;
-    public double DeltaIRR = 0.02;
+    public double DeltaIRR = 0.05;
 }
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