What is the BSN (Burgerservicenummer) in the Netherlands:

The BSN (Burgerservicenummer), also known as the citizen service number, is a crucial bureaucratic identification number for individuals residing in the Netherlands. It is used for various interactions with Dutch authorities and organizations, including employment, banking, tax-related matters, healthcare, benefit applications, and address changes. The BSN helps combat identity fraud and ensures accurate record-keeping.

Transition from Sofi Number to BSN:

Previously, the Sofi number (sofinummer) served as the social security number in the Netherlands and was issued by the Dutch Tax Office (Belastingdienst). In November 2007, existing Sofi numbers were automatically converted into BSNs. Starting in January 2014, the Dutch Tax Office ceased issuing Sofi numbers.

Applying for a Citizen Service Number (BSN):

To obtain a BSN, you must register with the municipality (gemeente) where you plan to live. Here are the steps for applying:

  1. Residence Registration: You must register with your municipality within five days of your arrival if you intend to stay for more than four months.

  2. EU Citizens: EU citizens will need to provide a valid proof of identity (e.g., passport, not a driver's license) and their address for registration.

  3. Non-EU Expats: Non-EU expats will typically need to provide additional documents, such as a residence permit, employment contract, and other relevant paperwork.

  4. Provisional Registration: For non-EU expats applying for a residence permit in the Netherlands, your initial registration with the municipality is provisional. Afterward, you will receive a letter of pre-registration (BvB) from the IND (Immigration and Naturalization Service). This letter will be returned to your municipality after you've applied for your residence permit, confirming your registration and BSN.

Recovering a Lost BSN:

If you have lost your BSN, you can usually find it on official documents such as tax assessments or return letters from the Dutch Tax Office, your Dutch identity card or passport, and your Dutch driver's license. If your identity document doesn't display your BSN, you can visit the Dutch municipality where you are registered and request your BSN number there.