Mortgage Interest Deduction (Hypotheekrenteaftrek): Qualifying Rules

Key Takeaways

Mortgage interest on your primary residence (eigen woning) is deductible from your Box 1 income.
Only annuity and linear mortgages qualify for the deduction (for mortgages taken out after January 1, 2013).
The maximum deduction period is 30 years from the moment you first take out a mortgage on any home.
The effective deduction rate is capped at 36.97% in 2026 (regardless of your actual marginal rate).
Mortgages from before January 1, 2013 may still qualify under the old rules (interest-only mortgages included).

How the Deduction Works

The mortgage interest deduction (hypotheekrenteaftrek) allows you to subtract the interest you pay on your mortgage from your Box 1 taxable income. This directly reduces your income tax.

The formula:

Net eigen woning income = Eigenwoningforfait − Mortgage interest paid

If the result is negative (it almost always is for mortgaged homeowners), the negative amount reduces your taxable income in Box 1.

Example

Eigenwoningforfait: €1,400
Mortgage interest paid in 2026: €12,000
Net eigen woning income: €1,400 − €12,000 = −€10,600
Tax saving at 36.97% effective rate: €3,919

Which Mortgages Qualify?

Mortgages Taken Out After January 1, 2013

Since 2013, stricter rules apply. Your mortgage must be:

Annuity (annuïtair) — equal monthly payments where interest decreases and repayment increases over time
Linear (lineair) — equal monthly repayment with decreasing interest payments

The key requirement: you must fully repay the mortgage within 30 years through regular installments. No interest-only (aflossingsvrij) period is allowed.

Warning

If you take out an interest-only mortgage after January 1, 2013, the interest is not deductible. This is the single most important rule change for the mortgage interest deduction. Verify your mortgage type with your bank or mortgage advisor.

Mortgages From Before January 1, 2013

Existing mortgages from before 2013 are grandfathered under the old rules:

Interest-only (aflossingsvrij) mortgages still qualify
Savings mortgages (spaarhypotheek) still qualify
Investment mortgages (beleggingshypotheek) still qualify
The 30-year limit still applies (counting from the original start date)

If you refinance a pre-2013 mortgage, the grandfathering is preserved — as long as the new mortgage does not exceed the remaining balance of the old one.

What Does NOT Qualify

Scenario	Deductible?
Interest-only mortgage (post-2013)	No
Mortgage on an investment property	No — investment property is in Box 3
Mortgage on a holiday home	No — Box 3
Second mortgage for home improvements (post-2013)	Yes — if annuity/linear and for the eigen woning
Mortgage from a family member	Yes — if at arm's length and properly documented
Personal loan used to buy a home	Maybe — must meet specific conditions

The 30-Year Limit

The mortgage interest deduction is available for a maximum of 30 years per person. This is a lifetime limit, not per property.

How it works:

The clock starts when you first take out a mortgage on any eigen woning
If you sell and buy again, the clock continues — it does not reset
Periods of renting (when you do not own a home) pause the clock
After 30 years of cumulative mortgage deduction, you lose the right entirely

Example:

2010: You buy your first home with a mortgage. Clock starts.
2015: You sell and rent for 3 years. Clock pauses.
2018: You buy again. Clock resumes from where it stopped (5 years used).
You have 25 years of deduction remaining.

The Effective Rate Cap (Tariefmaatregel)

Since 2014, the government has been gradually reducing the effective tax rate at which you can deduct mortgage interest.

Previously, if you were in the 52% tax bracket, you could deduct mortgage interest at 52%. The cap brings all taxpayers down to the same maximum rate:

Year	Maximum Deduction Rate
2019	49.0%
2020	46.0%
2021	43.0%
2022	40.0%
2023	36.93%
2024	36.97%
2025	36.97%
2026	36.97%

What this means: If your marginal Box 1 rate is 49.50% but the cap is 36.97%, you effectively deduct at 36.97%. The difference (49.50% − 36.97% = 12.53%) is lost.

The cap is implemented through a correction (bijtelpost) in your tax return. Your full mortgage interest is first deducted at your marginal rate, then a correction is added to bring the effective rate down.

Good to know

If your marginal rate is below 36.97% (i.e., you are in the lower tax brackets), the cap does not affect you — you deduct at your actual marginal rate. The cap only reduces the benefit for higher earners.

What Counts as Deductible Interest?

Deductible

Cost	Deductible?
Mortgage interest payments	Yes
Penalty interest for early repayment (boeterente)	Yes
Mortgage advice fees (advieskosten)	Yes — in the year incurred
Notary fees for the mortgage deed	Yes
National Mortgage Guarantee fee (NHG borgtochtprovisie)	Yes
Valuation report (taxatierapport) for the mortgage	Yes

NOT Deductible

Cost	Deductible?
Principal repayments (aflossing)	No — this is repayment, not interest
Notary fees for the property deed (levering)	No
Transfer tax	No
Estate agent commission (makelaarskosten)	No
Home insurance	No
Home maintenance and repairs	No

Tax Partners and the Mortgage

If you have a tax partner (fiscaal partner), you can allocate the net eigen woning income (eigenwoningforfait minus mortgage interest) between you in any ratio you choose. This allows optimization:

Allocate the deduction to the partner with the higher marginal rate (up to the 36.97% cap)
If one partner has no income, the deduction can be wasted — consider allocating it to the earning partner

Joint Ownership

If both partners co-own the home:

Each partner reports their share of the eigenwoningforfait (usually 50%)
Each partner deducts their share of mortgage interest (usually 50%)
The net amounts can then be reallocated between partners for tax optimization

Refinancing

If you refinance your mortgage:

Same or Lower Amount

If the new mortgage is for the same or lower amount as the remaining balance:

The deduction continues under the same rules as the original mortgage
Pre-2013 grandfathering is preserved
The 30-year clock continues

Higher Amount (Additional Borrowing)

If you borrow more than the remaining balance:

The excess portion is treated as a new mortgage (post-2013 rules apply)
The excess must be annuity or linear
Interest on the excess is only deductible if it is used for the eigen woning (e.g., renovation)
If used for other purposes (vacation, car, investments), the interest is not deductible

Provisional Refund (Voorlopige Teruggaaf)

You do not have to wait until you file your annual tax return to benefit from the mortgage interest deduction. You can apply for a provisional refund (voorlopige teruggaaf) at the Belastingdienst.

This gives you a monthly payment from the Belastingdienst, effectively spreading the tax benefit across the year. Many homeowners use this to reduce their net monthly mortgage cost.

How to apply: Through Mijn Belastingdienst. Enter your expected eigenwoningforfait and mortgage interest. The Belastingdienst calculates and pays you monthly.

Tip

The provisional refund is adjusted at year-end based on your actual tax return. If you overestimated your deduction, you may need to repay part of it. Be conservative in your estimates to avoid a surprise bill.

Common Mistakes

Not claiming the deduction at all — Especially common for expats who are unfamiliar with the Dutch system. If you have a mortgage on your primary residence, claim the deduction.
Deducting interest on an ineligible mortgage — Post-2013 interest-only mortgages do not qualify. Verify your mortgage type.
Not applying for the provisional refund — You could receive hundreds of euros per month instead of waiting for your annual tax return.
Forgetting to deduct one-off costs — Mortgage advice fees, NHG premium, and notary fees for the mortgage deed are deductible in the year you buy. These are often forgotten.
Not tracking the 30-year limit — If you have owned multiple homes, the 30-year clock has been ticking. Keep track of your cumulative deduction period.