One form at the town hall ends your Dutch residence. Your health insurance, your allowances, your state pension build-up and your tax return all pivot on the same date. Here is what changes, and which jobs can only be done before that date and which only after.
When you file it
If you expect to spend more than eight of the next twelve months outside the Netherlands, you file an aangifte van vertrek naar het buitenland, a declaration of departure, with your gemeente, your Dutch municipality. The rules for people moving abroad apply even when you do not yet know whether the move is for good.
The window is narrow. Most gemeentes accept the declaration no earlier than five days before you go, and no later than the day itself. Some let you file online with DigiD, the national login. Others want to see you at the counter. Everyone aged sixteen or over signs for themselves; younger children you report as their parent. So read your own gemeente’s page before you book a flight, next to the general emigration guidance.
The departure date you give is the hinge for everything below. Pick it deliberately.
Your health insurance does not end by itself
Dutch basic health insurance follows your verzekeringsplicht, the legal duty to be insured, and that duty ends as soon as you no longer live or work in the Netherlands. The policy itself runs on until you cancel it. So you cancel it yourself, effective on your departure date, and your insurer will nearly always want proof of deregistration first.
Both sides of that date hurt. Cancel too early and you sit uninsured in the gap. Cancel too late and you pay twice, because in Norway your cover comes from membership of folketrygden, the national insurance scheme, and not from a policy you choose yourself. Make the two meet on the day, not on the month.
Allowances, child benefit and state pension
- Toeslagen, the income-related allowances, do not stop because the gemeente deregistered you. You report the change yourself. Healthcare, rent and childcare allowance each hang off something different: your insurance, your rented home, your nursery. Whatever is overpaid, the Belastingdienst reclaims later.
- Kinderbijslag, Dutch child benefit, normally stops once you no longer live or work in the Netherlands. Within the EEA there are coordination rules, and which country pays depends on where you and your partner work. In Norway the equivalent is called barnetrygd and you apply for it yourself. The SVB describes what applies per situation.
- AOW build-up stops. You accrue two percent of the Dutch state pension for each insured year, over fifty years. Five years in Norway is therefore roughly ten percent less AOW, unless you take out voluntary insurance. It is possible, but the deadline after your compulsory insurance ends is short and the premium is not symbolic. The SVB gives the deadline and the conditions. Set against it: in Norway you are building your own pension instead.
The year you leave, at the tax office
In the year you move you are a resident taxpayer for part of it and a non-resident taxpayer for the rest. That combination has its own return, the M-biljet. It usually lands later than the ordinary return, and you sometimes have to ask the Belastingdienst for it. If you have a provisional assessment running, for mortgage interest relief say, stop it as of your departure date. Otherwise you hand the money back a year later.
What applies after that depends on what you keep in the Netherlands: a house you own, a company, an annuity, a job. We do not give tax advice. This is the point where an adviser of your own usually pays for themselves.
BSN, DigiD and the non-residents register
Your burgerservicenummer, the Dutch citizen number, stays yours. When you deregister, your record moves out of the resident database into the Registratie Niet-Ingezetenen, the register of non-residents, so the state can still find you. Your DigiD keeps working as well, but part of what sits behind it falls away once you are not a resident, and applying for a new DigiD from abroad is a good deal more awkward. Install the DigiD app before you go, on a phone you are taking with you, and check that your recovery method also works with a Norwegian number.
Bank, post and the vote
No rule says your Dutch account closes, but banks decide for themselves which non-residents they keep. Ask yours in writing before you leave and pass on your new address properly. Post to your old address stops arriving at some point, so cancel subscriptions and insurance policies before they renew on their own.
You keep the vote for the Dutch parliament and the European Parliament, but only if you register separately as a voter abroad. Municipal and provincial elections fall away.
The order is the real work
Only before you deregister: renew passports and ID cards for the whole family, request multilingual extracts of birth and marriage certificates from the gemeente that holds them, take a BRP extract with you, and get your DigiD in order.
Only afterwards: the proof of deregistration for your health insurer, your Norwegian registration, and the M form.
The platform holds this same order as a timeline with dates and reminders, so you are not the one keeping track of which side of that date each job falls on.