Getting your BSN in the Netherlands: how to register at the gemeente, what to bring, and what to do when appointments are scarce

Almost nothing in Dutch life works without a BSN (burgerservicenummer, or citizen service number) — the 8- or 9-digit number the tax office, health insurers, employers, banks and the DigiD login all ask for. You do not apply for it separately: you get it by registering at your gemeente (municipality), and if you are staying longer than 4 months you must do that in person within 5 days of arriving. This guide covers exactly what to bring to that appointment, the shorter RNI route if you are staying under 4 months, and what to do in the two situations that actually derail people — no appointment inside the deadline, and no address to register at.

The BSN is the number the rest of the Dutch system runs on. Government agencies use it to share your details without asking you to re-submit them; health insurers, care providers, employers, schools and the tax office all key their records to it; and you cannot get a DigiD — the login for almost every online government service — without one. That is why registration is the first thing the government's own arrival checklist tells you to do: every week without a BSN is a week you cannot start most of the other arrival steps. The full arrival order — DigiD, health insurance, bank, huisarts (family doctor/GP) — is in the first 90 days checklist.

If you are going to live in the Netherlands for longer than 4 months, you must register as a resident in the BRP at the municipality where you live, in person, within 5 days of your arrival. Registering late can bring a fine from the municipality, but the practical cost is bigger than the fine — the BSN, and everything downstream of it, is on hold until you do. Partners and children who moved with you register in person too, each with their own valid identification.

Most gemeenten register you by appointment, and each municipality sets its own lead times — which is why the official advice is to book the registration appointment before you travel, not after you land. You bring your documents, the desk enters your details into the BRP, and your BSN is generated as part of that registration. How quickly you receive the number in writing depends on the municipality; the registration itself is the moment it is issued.

Municipalities differ in what they ask for, so always check your own city's list, but the arrival checklist names the core documents:

• A valid identity document — passport, ID card or driving licence.
• Your residence document, if you are not an EU/EEA/Swiss citizen.
• Proof of your address: a rental contract, a purchase agreement, or written permission from the person who occupies the property.
• Certificates for your family situation where relevant — children's birth certificates, a marriage or divorce certificate.
• Proof of deregistration if you are coming from Aruba, Curaçao, St Maarten, Bonaire, St Eustatius or Saba.

If you are in the Netherlands for less than 4 months — a short work posting or a study stay, for example — you do not register as a resident. Instead you register as a non-resident in the RNI (Registration of Non-Residents) at one of the 19 designated RNI municipalities, and you are issued a BSN through that registration. It is the same number, obtained the same way in principle, just through the non-resident database rather than the resident one; people who later stay longer than expected then register as a resident at their local gemeente.

Appointment lead times vary sharply between municipalities, and busy gemeenten can be booked out well past the 5-day window — which is exactly why the checklist tells you to book before departure. If you are already here and the first slot is weeks away, take the earliest one you can get and keep the confirmation: the 5-day rule is about when you must act, and a documented booking is a far stronger position than an unregistered gap. Check whether your municipality has more than one service location, and contact them directly — desks that handle arrivals see backlogs constantly, and the person on the phone has dealt with your situation before. Late registration can carry a municipal fine, but it does not stop you registering.

Registration needs an address, and in the housing shortage many people arrive without a contract. If you genuinely have no home address, you can register in the BRP under a briefadres (correspondence address) — for example at the home of someone you know. You apply at the Burgerzaken (civil affairs) department of the municipality where that address is located, with a written explanation of why you need it, your own valid ID, and a signed consent declaration from someone who lives at the address plus a copy of their ID. A briefadres is administrative only — it is where your government mail goes, not where you officially live — and it is granted for a limited period agreed with the municipality. Registration problems tied to a rental itself, such as a landlord refusing to let you register, are housing-guide territory rather than a briefadres case.

Once you are registered, the wait for the number in writing is the most common blocker in the whole arrival sequence, and how long it takes is down to the municipality. Use the wait rather than lose it: you can gather health-insurance quotes while the 4-month insurance clock runs (the policy is backdated anyway), and some banks let you open an account now and add your BSN within 90 days. DigiD and any benefit application simply have to wait for the number — nothing is lost by that except time. The next steps once your BSN is in hand are laid out in the first 90 days checklist.