Almost nothing else in the Netherlands works without a BSN — not payroll, not a bank account, not health insurance. Here is how founders and relocating employees actually get one, and where the process trips people up.
What to expect
Polder sequences your BSN registration alongside your visa, housing and payroll start date, so it isn't the thing that delays your first paycheck or your first month in the Netherlands.
The Burgerservicenummer (BSN) is the personal number Dutch authorities, banks, employers and insurers use to identify you. Until you have one, an employer legally cannot run you through payroll, you cannot open most Dutch bank accounts, and you cannot get statutory health insurance. Founders and relocating employees usually underestimate how much of the first month depends on this one number existing.
Payroll, tax filings, health insurance, a Dutch mortgage or rental contract, DigiD (the login used for government services) and most bank accounts all require a BSN. It is issued once you register as a resident, and it stays with you permanently.
For a startup visa founder or a relocating employee, the BSN is usually the single item that unlocks everything else — which is why it is worth sequencing early rather than treating it as paperwork to handle after moving in.
If you are moving to the Netherlands for four months or longer and will have a Dutch address, you register with the municipality (gemeente) where you will live — this both registers you as a resident and issues your BSN in the same appointment.
If you don't have a Dutch address yet, or you will stay under four months, you can still get a BSN through the RNI (Registration Non-Residents) desks available at a limited number of municipalities. This is the route many founders use before their housing is finalised.
A valid passport, your residence permit or entry visa documentation where applicable, and often a birth certificate (sometimes legalised or apostilled, depending on your nationality and the municipality). If you are married or have children joining you, expect to bring marriage or birth certificates for them too.
Requirements vary slightly by municipality, so check the specific gemeente's or RNI desk's page before the appointment rather than assuming the checklist is identical everywhere.
The practical friction is a sequencing problem: some housing contracts want proof of income or a BSN, some employers want a BSN before running the first payslip, and municipal registration wants a Dutch address. RNI registration exists precisely to break this loop for people without a fixed address yet.
For employees and founders arriving with Polder's support, we sequence the appointment booking against the visa or work-permit timeline and the payroll start date, rather than leaving it to be discovered as a blocker in week one.
Yes, through RNI (non-resident) registration at a limited number of designated municipalities, typically used by people who will start working before their permanent address is settled.
It functions as your tax identification number as well as your general citizen service number — the Belastingdienst and other authorities use the same BSN rather than issuing a separate tax ID.
Yes. A spouse or partner and each child who registers as a resident (or registers via RNI) receives their own BSN; it is personal and not shared within a household.
The number itself is usually issued at, or shortly after, the registration appointment. The real variable is how far ahead you can book that appointment — in busier municipalities this can be the longest step in the whole relocation.
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Polder sequences your BSN registration alongside your visa, housing and payroll start date, so it isn't the thing that delays your first paycheck or your first month in the Netherlands.
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