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Mortgage Interest and Owner-Occupied Home Rules

Short answer

Mortgage-interest deduction belongs to the Dutch owner-occupied home rules in Box 1, but it is never automatic. You first need to know whether the home still qualifies as an eigen woning for Dutch tax purposes and whether the costs relate to deductible own-home debt.

For expats living outside the Netherlands, the answer becomes narrower. Belastingdienst states that qualifying non-resident status can keep the own-home deduction route open, while non-qualifying non-residents generally cannot deduct mortgage interest on their own home in the Dutch return.

Who this article is for

  • expats buying or owning a home in the Netherlands
  • people moving abroad who want to know whether mortgage-interest deduction still applies
  • non-residents checking whether qualifying status changes the result
  • taxpayers dealing with a home that is for sale, temporarily rented out or still under construction

Start with the Box 1 own-home test

Belastingdienst treats the main owner-occupied home in Box 1. That means the first question is not simply Can I deduct interest? but Is this home still my Dutch eigen woning for this year? If the answer changes, the mortgage-interest answer changes with it.

Belastingdienst’s own-home guidance also explains that you usually have to add an eigenwoningforfait amount to income, while certain interest and costs can be deducted. So the calculation is a Box 1 net result, not a simple yes-or-no interest test.

Why residence status matters so much

Belastingdienst’s international guidance says that a qualifying non-resident can generally deduct mortgage interest for the own home. The same international pages make clear that a non-qualifying non-resident cannot deduct that own-home mortgage interest in the Dutch return.

The Fiscaal Informatie en Steunpunt page for people living abroad also shows that the foreign own home and certain former or future Dutch homes can still be relevant in the Dutch return, but the route depends on international status. That is why migration years require extra care.

Which costs are usually relevant

Belastingdienst states that deductible own-home items include interest on the mortgage or other qualifying loan, financing costs, and periodic payments for erfpacht, opstal or beklemming. At the same time, general housing costs, insurance and many purchase-related costs are not deductible.

A good operational method is to split your paperwork into four buckets: annual mortgage-interest statements, financing-cost evidence, WOZ/eigenwoningforfait data, and temporary-situation evidence such as sale listings or rental documents.

Temporary situations can change the answer

If you moved and your old home is empty and for sale, Belastingdienst states that the home can remain temporarily within the own-home regime if the conditions are met. The standard rule is that the deduction can continue until the end of the third year after the move, as long as the property is empty and genuinely for sale.

Belastingdienst also explains that a new home that is still empty or under construction can, in certain circumstances, already fall under the temporary two-homes rules. That makes sale years and purchase years much more technical than a normal steady-state mortgage year.

Temporary rental needs special treatment, but it does not always end the eigen-woning route

Belastingdienst’s temporary-rental guidance does not say that every short rental automatically destroys the own-home position. If you temporarily rent out your owner-occupied home, for example during a holiday or short stay abroad, the home can in some situations still remain your eigen woning. You then still report the eigenwoningforfait and deductible mortgage interest and financing costs, while part of the rental income is taxed.

That is why expats should not use a simplistic rule of thumb. Temporary rental is a review trigger, not an automatic answer. Check the exact rental scenario before assuming the deduction disappears or survives unchanged.

The 2026 high-income limit still applies

Belastingdienst states that if your 2026 income from work and home before deductions is above EUR 78,426, the deduction rate for mortgage interest and other deductible own-home costs is capped in the highest bracket. In 2026 that effective relief is limited to 37.56%.

So for high-income taxpayers, the question is not only whether the cost is deductible but also at which effective rate the deduction still works.

What to do now

  • confirm first whether the property still qualifies as your eigen woning in this tax year
  • check whether you are a qualifying non-resident if you live abroad
  • separate deductible financing costs from general purchase or living costs
  • keep your annual mortgage statement, WOZ information and temporary-sale or rental evidence together
  • review temporary rental carefully and match the tax treatment to the exact scenario

Common mistakes

  • assuming that owning the property automatically means the interest stays deductible
  • ignoring the qualifying-non-resident test after moving abroad
  • mixing deductible financing costs with general house costs
  • assuming every temporary rental automatically ends the eigen-woning route
  • forgetting that temporary sale, temporary rental or a new home under construction can each trigger different rules