diff --git a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/SaleCalculator.java b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/SaleCalculator.java
index e69de29..b45faa3 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/SaleCalculator.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/SaleCalculator.java
@@ -0,0 +1,19 @@
+package edu.ntnu.idi.idatt2003.g40.mappe;
+
+import java.math.BigDecimal;
+
+public class SaleCalculator implements TransactionCalculator {
+
+    private static final BigDecimal COMMISSION_RATE = new BigDecimal("0.01");
+    private static final BigDecimal TAX_RATE = new BigDecimal("0.30");
+
+    private final BigDecimal purchasePrice;
+    private final BigDecimal salesPrice;
+    private final BigDecimal quantity;
+
+    public SaleCalculator(Share share) {
+        this.purchasePrice = share.getPurchasePrice();
+        this.salesPrice = share.getStock().getSalesPrice();
+        this.quantity = share.getQuantity();
+    }
+}
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