Leaving the Netherlands: the expat exit checklist

What "leaving" means for the Belastingdienst

Dutch tax residence is mostly a function of where you actually live (not where your passport says you live, or where your employer is). The Belastingdienst looks at your centre of life: your home, your family, where you sleep most nights, where your kids go to school. The de-registration at the gemeente is the strongest single signal that your residence ended on a specific date.

Leaving has three different layers: civic (the BRP), tax (the M-form and any conserverende aanslag), and contractual (your employer, landlord, lender, insurer, pension fund, utilities). The mistake most expats make is solving the contractual layer and assuming the other two follow automatically. They don't.

Order of operations

1. 1 to 3 months before departure: confirm your destination tax residence: If you're moving to a country with a NL tax treaty (most of the EU, US, UK, Singapore, Australia, Canada), the treaty determines which country gets which slice of your income for the partial year. Save proof of your new tax residence (lease, employer letter, foreign tax ID) for your final M-form.
2. 1 month before: notify employer and adjust payroll: Your final Dutch payslip should reflect the partial-year split. The 30% ruling, if you have one, applies up to and including your final NL working day. After that day, the ruling lapses for that role even if you keep working remotely for the same Dutch employer; that mode of work raises separate cross-border payroll questions.
3. 30 to 5 days before departure: book gemeente de-registration: You must de-register from the BRP at your gemeente if you're leaving for more than eight months in any twelve-month period. Most municipalities require an in-person appointment within five working days of your actual departure date. Bring passport, BSN, and (if applicable) the same documents for partner and children.
4. Day of departure: collect your civil-status paperwork: Print or download: jaaropgaaf, pension uitkeringsoverzicht, BSN-bevestiging, broker year-end statements, mortgage discharge if you sold a home, and any pre-paid voorlopige aanslagen for the current year. The Dutch portal (Mijn Belastingdienst) stays accessible from abroad if your DigiD remains active, but document copies are easier to keep locally.
5. First 4 to 8 weeks abroad: handle utilities, banking, post: Cancel utilities, internet, phone contracts (often with a notice period). Update your Dutch bank with your new foreign address but don't close it yet; you'll likely need it for tax refunds. Set up post forwarding via PostNL for at least three months. Inform pension funds, health insurer, and the Belastingdienst (via Mijn Belastingdienst) of your new address.
6. Year of departure + 1, March to May: file the M-form: The migration-year return (M-form) splits your tax year into a Dutch-resident period and a non-resident period. It is paper-based, fiddly, and almost always worth handing to a tax adviser for the year you leave. Most expats see a refund of unused personal allowances on the resident slice.

The M-form

For the calendar year you leave, you file an M-form (migration return). It splits the year into a resident slice and a non-resident slice. The resident slice is taxed under normal Dutch rules; the non-resident slice is taxed only on Dutch-source income (employment income for days physically worked in NL, Dutch property income, etc.).

The M-form is the only Dutch return that is still paper-based. It is also the only one where most expats find an unexpected refund: unused personal allowances on the resident slice, over-withholding on a final payout, and the partial-year fiscal-partner adjustments. Refunds of €1,500 to €5,000 are common for ordinary salaried departures; six figures for executives with mistimed equity events.

Plan to file the M-form between March and May of the year after you leave. Almost all expats use a tax adviser for this single return, even if they self-file every other year. Adviser fees range from €300 to €800 for a clean M-form, more if you have foreign self-employment or significant equity.

What stays Dutch after you leave

• BSN:permanent for life. You don't lose it; you just stop being a Dutch resident.
• DigiD: stays usable from abroad as long as you log in occasionally. Required for filing and for tracking refunds.
• Pension entitlements built up at NL employers: stay with the pension fund. You can transfer or preserve them; the rules depend on the destination country.
• 30% ruling history:the ruling itself stops, but the tax that you saved in prior years stays saved. Don't expect to be re-billed.
• Property and mortgage: your call to keep, rent out, or sell. The Dutch property stays subject to Dutch property taxes (OZB) and Box 3 wealth tax for the non-resident period.

The first year abroad: things you may forget

• Cancel your basisverzekering on your departure date, in writing. Insurers continue billing otherwise; CAK can chase you abroad.
• Submit a final zorgtoeslag adjustment via Mijn toeslagen if you received the allowance during the year. Missing this triggers a clawback letter 18 months later.
• Update your broker, bank, and pension fund with your foreign tax residency and tax ID. Most are required to report holdings under DAC8 / CRS to your new country and need the right ID to do so.
• Keep proof of your departure date: the gemeente uitschrijving certificate. The M-form depends on it; foreign authorities may also ask for it.
• If you have Dutch dividends or interest after leaving, dividend withholding tax (15%) still applies. Treaty-based reductions are filed separately, not on the M-form.

Coming back later

Leaving NL doesn't blacklist you. If you return after living abroad for at least 24 months and meet the recruited- from-abroad and 150-km rules, you can apply for the 30% ruling fresh. The earlier ruling years don't carry over. Pension entitlements you preserved or partially withdrew re-attach normally; specialist advice is worth getting on the timing of any earlier conserverende aanslag.