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Mortgage interest deduction — the politically untouchable tax break that's finally hitting a wall
Part of: Dutch Economy
Hypotheekrenteaftrek lets Dutch homeowners deduct mortgage interest payments from their taxable income. If you're paying €10,000 a year in mortgage interest, you can subtract that from what you owe income tax on. At higher tax rates, that's worth thousands of euros a year.
It's been around for decades and has made Dutch homeowners deeply dependent on it when calculating what they can afford. Touching it is political suicide. Every government that has tried to seriously reform it has backed down or been punished at the polls.
The deduction was designed to encourage homeownership. It worked — the Netherlands has a large homeowning middle class. But it also:
Economists across the spectrum agree it distorts the housing market. Politicians across the spectrum are afraid to say so loudly.
In the 1990s, aflossingsvrije hypotheken (interest-only mortgages) were enormously popular. You pay only the interest each month, never the principal — keeping monthly costs low, but never actually paying down the debt. Millions of Dutch homeowners took these out.
In 2001, the Kok II cabinet introduced a rule: you can only claim the deduction for 30 years. For mortgages taken out before 2013 (which are still on the old rules), that 30-year clock will run out around 2031 for many borrowers. About one million homeowners will lose their deduction — potentially adding hundreds of euros a month to their effective costs, on mortgages they may not be able to easily refinance.
Nobody set up a registry to track who is affected. The tax authority (Belastingdienst) doesn't have the data. The Ministry of Finance warned parliament about this in 2025.
This is a live coalition dispute with two separate but related flashpoints:
The automatic increase nobody planned for
The deduction is mechanically linked to the second income tax bracket. When the government raises that bracket (which it's doing), the deduction automatically rises too — meaning higher-income homeowners get a bigger benefit, at a cost of hundreds of millions annually. Nobody designed this. D66 and CDA want to reverse the automatic increase; VVD refuses, citing "clear agreements made during formation." VVD fractieleider Brekelmans: "We have clear agreements that we make no changes to the system." GroenLinks-PvdA has pushed a motion to fix it; D66 and CDA support it; VVD doesn't.
The 2031 cliff for interest-only mortgages
Separately: Deputy PM Yeşilgöz (VVD) argues the 2031 crisis should be left to the next cabinet to solve. D66 State Secretary Eerenberg promised a solution this term. The gap reflects a broader coalition tension: VVD protects existing homeowners at almost any cost; others want structural reform.
Proposed options on the table: 1. Let the deduction expire in 2031 — cheapest but hits a million people hard with no warning 2. Extend until 2043 — costs ~€1.4 billion a year 3. Help borrowers convert to annuity mortgages — complex, voluntary 4. Do nothing for now — costs ~€100 million a year in compliance losses
If you own a home in the Netherlands, you almost certainly claim this deduction already. If you bought before 2013 with an interest-only mortgage, check when your 30-year clock runs out. If you bought after 2013, the rules are different (post-2013 mortgages must be annuity or linear to qualify).
Either way, this is a benefit that has historically been assumed permanent and is now visibly fragile.
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