The Dutch citizen service number — a unique 9-digit ID required for working, banking, healthcare, and registering property in the Netherlands.
The BSN — Burgerservicenummer — is the Dutch personal identification number, a unique nine-digit code issued by the Dutch government to all residents and citizens. It is the cornerstone of Dutch public administration and is required for virtually every interaction with government agencies, employers, banks, healthcare providers, and property registrars. The format is typically displayed as XXX.XX.XXX (three pairs of digits separated by dots), though it is sometimes written without dots as a nine-digit sequence.
For foreign nationals relocating to the Netherlands, obtaining a BSN is one of the first administrative steps after arrival. You must register with the gemeente (local municipality) within five working days of moving into a Dutch property. At registration, you will be issued a citizen service number (BSN) automatically. This number is essential — without it, you cannot legally work, open a Dutch bank account, register with a doctor, or purchase property. Some employers require proof of your BSN application before you can start work.
The BSN is used across all major Dutch institutions. Your employer needs it for payroll and tax withholding (inkomstenbelasting). Your bank requires it for account opening and KYC (Know Your Customer) compliance. The belastingdienst (Dutch Tax Authority) uses it to track your income tax returns (aangifte inkomstenbelasting). Healthcare providers use it for billing and your personal health record (elektronisch medisch dossier). The Land Registry uses it when you purchase property. Understanding that the BSN is a master identifier helps explain why it is requested so frequently.
Non-EU nationals working in the Netherlands may have a different registration status. If you hold a residence permit (verblijfsvergunning) under Dutch immigration law, you will still be issued a BSN upon local registration. However, some non-EU workers on short-term assignments may not receive a BSN if they do not formally register as residents. In those cases, employers and authorities use the foreigner identification number (vreemdelingennummer or A-number) instead. For permanent residency or long-stay work visas, the BSN is always issued.
Your BSN is personal and non-transferable. It remains yours for life and does not change even if you move regions, change your name, or obtain Dutch citizenship. If you leave the Netherlands permanently, your BSN registration can be terminated with the gemeente, but the number itself remains your historical identifier for Dutch records. Keep a record of your BSN in a safe place — you will need to quote it regularly on forms, in communications with authorities, and when dealing with banks and insurance companies.
Employers are legally required to verify your identity and tax status. While technically you may be able to work for a few days pending a BSN application, most employers will not pay you or process payroll until your BSN is registered with the Tax Authority. Register with your gemeente immediately upon arrival.
Registration with your gemeente is immediate — you receive your BSN on the same day or within a few days of submitting your application. However, it can take 1–2 weeks for your BSN to be fully activated in the Tax Authority and other government systems, during which time some services may be unavailable.
The BSN serves as your tax identification number in the Netherlands. There is no separate "TIN" — your BSN is used by the belastingdienst for all tax purposes, including income tax, property tax, VAT registration, and other tax filings.
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