Applying for a citizen service number (BSN)
The citizen service number (burgerservicenummer, BSN) was introduced on 26 November 2007. The BSN will, in many cases, replace the tax and social security number (sofinummer). The BSN consists of the same digits as the tax and social security number.
Tax and social security number to be cancelled
With effect from 6 January 2014, you can no longer apply to us for a tax and social security number. From now on, you will receive a citizen service number if you register with a municipality. That is why, as from this date, every person must be registered with a municipality, even if you move to the Netherlands temporarily.
You are registered with a Dutch municipality
If you were registered with a Dutch municipality on 26 November 2007, you did not have to take any action yourself. Your tax and social security number was automatically converted into your BSN. You now only use the digits of your tax and social security number as your BSN.
Businesses have either a BSN or a ‘Legal Entities and Partnerships Identification Number’ (Rechtspersonen en Samenwerkingsverbanden Informatienummer, RSIN). This depends on which legal form you want your business to have (only available in Dutch).
If you lost your BSN, you probably do not have to apply for a new one. You can find your BSN in various documents.