Housing corporations and private landlords are often unable to find out if their tenants earn more than the maximum level for rent-controlled housing because of poor information from the tax office, Nos television reports on Tuesday.

Government efforts to encourage the well-off to leave rent-controlled properties mean landlords can put up rents by an extra 5% for those earning more than €43,000 a year.
But research by Nos shows the tax office does not have the relevant information about up to 10% of tenants.
Salaries
For example, housing corporation Beter Wonen Vechtdal, which has 3,300 rent-controlled properties, has only been able to find out if 400 tenants break the salary barrier. And Woonbedrijf in Eindhoven, with 12,400 properties, does not know if 44% of its tenants earn more than the maximum.
The tax office told Nos there are several reasons why they don’t have information about everyone. For example, the self-employed often delay making tax returns and students are not required to make them unless they are earning, a spokesman said.
Parliament still has to vote in favour of the rent increase plan but landlords have been allowed to take steps to implement it now because of the May deadline for rent increases.