refinancing your dutch mortgage as an expat

Refinancing a Dutch mortgage looks complicated and usually isn’t. You either wait until your fixed-rate period ends and switch penalty-free, or you switch mid-term and pay a breakage fee that is partly compensated by the lower rate. The maths is usually decided by one number: the breakeven horizon. If you stay in the house longer than the breakeven period, refinancing pays off. If not, it doesn’t. This page walks through both situations and the points where expat-specific issues — 30% ruling, knowledge-migrant contract, plans to leave — change the calculation.

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Key facts
  • →“Oversluiten” is the Dutch term for refinancing — moving your mortgage to a new lender or product.
  • →The decision usually hinges on three numbers: current rate, new rate, and breakage cost (“boeterente”).
  • →Refinancing within the fixed-rate period usually triggers a breakage fee.
  • →At the end of the fixed-rate period, you can switch lenders penalty-free.
  • →Breakage costs paid for refinancing are tax-deductible in Box 1 in the year you pay them.
  • →Typical processing time for an oversluit: 6 to 10 weeks.
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Three situations where refinancing makes sense

Most refinancing decisions fall into one of three buckets:

  1. Fixed-rate period ending soon. Six months out from the end of your fixed rate, you can renegotiate with your current lender or move to another. There is no breakage cost. This is the cleanest moment to refinance, and the moment where independent advice pays off most.
  2. Rates have dropped meaningfully mid-term. If current market rates are 1 percentage point or more below your fixed rate and you have at least four years left, refinancing usually beats staying — even after the breakage cost.
  3. Major life change. Marriage, divorce, second child, partner moving in or out, switching from joint to sole ownership. The legal restructure is the reason; the rate is a side benefit.

If none of these three applies, refinancing rarely pays back.

The breakage cost (“boeterente”) explained

When you break a fixed-rate mortgage early, the lender charges a fee that compensates for the interest income they lose. The formula is set by the AFM and is the same across all Dutch lenders:

  • Take your remaining loan balance.
  • Multiply by the difference between your contract rate and today’s comparable rate.
  • Multiply by the remaining fixed-rate years (with a discount for time value).

A worked example: €350,000 outstanding, contract rate 4.5%, today’s rate 3.2%, four years left. Boete is roughly €350,000 × 1.3% × 4 = €18,200. [verify: current AFM formula and discount factor]

The whole boete is tax-deductible in Box 1 in the year you pay it, which cushions the blow. For a top-bracket taxpayer, the real cost is closer to 50% of the headline figure.

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Expat-specific points to watch

A few situations where the standard refinancing logic shifts for expats:

  • 30% ruling near the end. If the ruling has less than three years left, some lenders haircut your countable income. Refinancing on the day the ruling expires gives the cleanest assessment.
  • Knowledge-migrant contract renewal. Some lenders want the next contract on file before they refinance. Time your application to a recent contract extension.
  • Plans to leave the Netherlands. If you might leave within three years, refinancing rarely pays off. The breakage cost plus advisor and notary fees rarely earn back across a short horizon.
  • Currency hedging. If you plan to use foreign savings to pay down at the same time, factor the FX hedge cost into the breakeven.
  • Buy-to-let conversion. Refinancing from a primary-residence product to a buy-to-let product is not technically refinancing in the AFM sense — it triggers different rules and usually a different lender pool.

Ready for a closer look?

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Frequently asked questions

Renegotiating means staying with your current lender on a new fixed-rate period. Refinancing means moving to a different lender. The mechanics are similar; the choice is whether the current lender’s renewal offer beats the best of the market.

No. The AFM formula is binding on all Dutch lenders. What you can negotiate is the refinancing offer at the new lender, which can include partial reimbursement of switching costs.

Yes, in most cases. Breakage cost, mortgage deed fees and advisor fees tied to a primary-residence refinance are deductible in Box 1 in the year you pay them. Keep the invoices.

It affects your income test the same way as on a new mortgage. Lenders that count full gross will keep doing so; those that count taxable only will keep doing that too. The ruling end date matters more than the rate.

Six to ten weeks from first contact to notary signing. The valuation, lender offer and notary appointment usually move in parallel. Plan around six weeks if you are renegotiating with your current lender, longer if you are switching.

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Reviewed by Joan Ottenheim, CFP & FFP — last reviewed 2026-05-12.

Independent · AFM-registered · CFP & FFP credentials · Offices in Eindhoven and Arnhem.