diff --git a/src/main/java/src/TasksFrame.java b/src/main/java/src/TasksFrame.java
index 27558af..8b8e942 100644
--- a/src/main/java/src/TasksFrame.java
+++ b/src/main/java/src/TasksFrame.java
@@ -1262,6 +1262,13 @@ public class TasksFrame extends JFrame {
         return x;
     }
 
+    public int setupErtraege(int a, int b, int c)
+    {
+        int x = 0;
+        x = a+b+c;
+        return x;
+    }
+
 
     public void setupArea()
     {
diff --git a/src/test/java/src/TasksFrameTest.java b/src/test/java/src/TasksFrameTest.java
index 1d7c156..19c3292 100644
--- a/src/test/java/src/TasksFrameTest.java
+++ b/src/test/java/src/TasksFrameTest.java
@@ -43,6 +43,14 @@ class TasksFrameTest {
         int x = tasksFrame.setupAufwendungen(20000,6000,10000,4000,100);
         assertEquals(40100, x);
     }
+
+    @Test
+    void ertraege()
+    {
+        TasksFrame tasksFrame = new TasksFrame();
+        int x2 = tasksFrame.setupErtraege(80000,13000,4000);
+        assertEquals(97000, x2);
+    }
     @Test
     void setupPI() {
         TasksFrame tasksFrame = new TasksFrame();