If your landlord announces an unjustified income-dependent rent increase, you should start by submitting a written objection within six weeks of receipt. State the facts, such as incorrect income data or exceeding the maximum permitted increase. The landlord must respond within six weeks. If no resolution is reached, file a complaint with the Rent Assessment Committee (cost: €25 via [huurcommissie.nl](https://www.huurcommissie.nl)).
The committee assesses the case based on income, sector, and index. If the increase is deemed unjustified, the landlord must reverse the rent increase and refund any overpaid rent, plus interest. In urgent cases, you may engage the court via the subdistrict court. Ensure all evidence is documented: rental agreement, income statement, and correspondence. The Rent Assessment Committee handles thousands of cases annually; the success rate for tenants is high with proper substantiation. Avoid payment by protesting immediately; retrospective settlement is possible but cumbersome. Consult the [Woonbond](https://www.woonbond.nl) for free template letters.