10. Interest

T 042
     
in € thousand 2015/16 2014/15
     
Interest income 2,868 3,591
Interest expense (27,373) (30,940)
 
  (24,505) (27,349)

The interest income mainly derives from interest-bearing customer receivables.

The interest expense primarily results from Aurubis AG’s borrowings. Amongst other items, the interest expense includes the net interest from defined benefit plans amounting to € 5,470 thousand (previous year: € 5,621 thousand).