Two parties on the city board of The Hague - VVD and Islam Democrats - are pushing for a change in the current mortgage laws.
Bilaa-Riba (no interest) from Leiden is setting up a mortgage scheme where no interest has to be paid. However, in such a case you don't get the benefits of deducting the interest you earn from your taxes.
The two parties which are pushing for this new halal-mortgage are hoping it will encourage Muslims to buy houses, which would cause them also to be more concerned about their house and neighborhood. They say that the deduction law is intended to stimulate house ownership and that it doesn't fulfill its goal by one million Muslims and therefore should be changed.
Source: AD.nl (Dutch)