This article is an acquisition from Capital, Capital’s premium digital offering. For you as a stern PLUS subscriber, it is available exclusively here for seven days. It will then be available again exclusively for Capital subscribers at

Things get tricky once a year: when the utility bill comes from the landlord. Water, caretaker and property tax – owners can pass these and many other costs on to their tenants.

But mistakes often happen. 90 percent of utility bills are inadequate, as data from the start-up Mineko shows. Last year the error rate was 81 percent. Mineko checks utility bills for tenants for errors. The survey was based on around 20,000 utility bills. On average, tenants are currently being charged 317 euros too much, according to Mineko. In 2022 it was 192 euros.

Access to all STERN PLUS content and articles from the print magazine


Already registered?