Stater processes more than 1.3 million mortgage loans for as many consumers in the Netherlands. Via innovative digital processes and accessible portals. This way, we always have the right answer to your questions. If you have questions about the possibilities of lowering the interest rate on your mortgage due to the expiry of top surcharges or interest rate discounts, we recommend that you first consult your lender's website. There you may be able to find out if your lender allows interest rate reductions and/or interest rate swaps.