Some 78,000 households in the Netherlands may face trouble paying off or renewing their interest-only mortgages when they expire, Dutch financial services authority AFM warned on Tuesday.

Most of the three million people with an interest-only mortgage will be able to deal with the principle debt but some face being forced to sell their house because they have no savings or won’t be able to take out a new mortgage, the AFM said.

Around half of the combined Dutch mortgage debt is due to interest-only mortgages, many of which will expire around 2035.

This means, the agency says, that many people now in their 50s will then be faced with lower income from pensions and will be unable to benefit from mortgage tax relief, which can only be claimed for 30 years.

A survey by Kantar TNS in 2017 found half of people in their 50s don’t see the need to save up and pay off the principal debt.