Those heavily indebted now pay almost as much interest as rent. The decile of students with the highest debt paid an average of 224.87 euros per loan in February.

In the same month last year it was 158.07 euros, which corresponds to an increase of 42 percent. The average interest payments grew at a similar rate over the same period - from 60.70 to 85.74 euros. KfW loans are based on the Euribor reference interest rate and are adjusted twice a year.