How it works
RSIN is short for Rechtspersonen en Samenwerkingsverbanden Informatienummer. In English, this is the information number for legal entities and partnerships. The KVK issues it when a BV, a foundation or a partnership is registered. The RSIN is different from the KVK number. The KVK number is the number of the registration in the trade register. The RSIN is the number of the legal entity itself.
The tax authority builds the company’s numbers on the RSIN. The VAT identification number of a BV is NL, the RSIN, B and two digits, usually 01. The payroll tax number is the RSIN, L and two digits. For corporate income tax, the tax authority also uses the RSIN.
The RSIN stays the same for the life of the company, also after a relocation, a name change or a change of directors. It appears on the KVK extract and on letters from the tax authority.
A sole trader uses the KVK number and a separate VAT id. The RSIN is for legal entities. This is one of the practical differences between a sole proprietorship and a BV.
Example
A BV receives KVK number 12345678 and RSIN 123456789 on the day of registration. Its VAT id becomes NL123456789B01 and its payroll tax number 123456789L01. The BV puts the KVK number and the VAT id on every invoice. The tax authority puts the RSIN on every letter.
The figures
Every rate for 2026 is listed in Netherlands tax rates 2026, and the figures for 2027 are in Netherlands tax rates 2027.
Questions people ask
Is the RSIN the same as the tax number?
The RSIN is the base. The tax authority adds a suffix per tax: B01 for VAT, L01 for payroll tax. For corporate income tax the RSIN itself is used.
Where do I find the RSIN?
On the KVK extract of the company, under the details of the legal entity, and on every letter from the tax authority.
Holdwise, Hoofddorp. We keep this definition in line with our Dutch and German glossaries, and the figures are those for the tax year 2026. Updated 30 September 2026.
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