diff --git a/cs623/proj1/RetirementCalculatorModel.java b/cs623/proj1/RetirementCalculatorModel.java
index 468924a..6e45bfd 100644
--- a/cs623/proj1/RetirementCalculatorModel.java
+++ b/cs623/proj1/RetirementCalculatorModel.java
@@ -4,6 +4,7 @@ import java.util.*;
 public class RetirementCalculatorModel
 {
     /* input fields */
+    private double myCurrentIncome;
     private double myIncomeWanted;
     private double myEmployerPension;
     private double myPartTimeIncome;
@@ -33,6 +34,12 @@ public class RetirementCalculatorModel
 
     public void calculate()
     {
+        if      (myCurrentIncome < 25000.0)
+            mySocialSecurity = 8000.0;
+        else if (myCurrentIncome <= 40000.0)
+            mySocialSecurity = 12000.0;
+        else
+            mySocialSecurity = 14500.0;
     }
 
     private double calculateRetirementFactor()