diff --git a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/Transaction.java b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/Transaction.java
index 40576ef..4030335 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/Transaction.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/Transaction.java
@@ -10,7 +10,7 @@ public abstract class Transaction {
 
   private final int week;
 
-  // private final TransactionCalculator;
+  private final TransactionCalculator calculator;
 
   private boolean commited = false;
 
@@ -21,10 +21,11 @@ public abstract class Transaction {
    * @param week       the current week to perform the transaction under
    */
 
-  protected Transaction(final Share share, final int week
-          /*,final TransactionCalculator calculator*/) {
+  protected Transaction(final Share share, final int week,
+                        final TransactionCalculator calculator) {
     this.share = share;
     this.week = week;
+    this.calculator = calculator;
   }
 
   /**
@@ -43,9 +44,14 @@ public int getWeek() {
     return week;
   }
 
-  /*public getCalculator() {
-      return calculator;
-  }*/
+  /**
+   * Returns the calculator used by this transaction.
+   *
+   * @return calculator
+   */
+  public TransactionCalculator getCalculator() {
+    return calculator;
+  }
 
   /**
    * Returns whether this transaction has been commited or not.