What is a KvK number used for?

Your KvK number identifies your company in the Dutch trade register and is required on almost every subsidy application, including the WBSO, SLIM and SIB.

Do you need your KvK number for the WBSO?

Yes, RVO asks for your KvK number on the WBSO application form to verify your company's legal form, registered activities and registration date.

Why can a new company's KvK number cause delays with mijn.rvo.nl?

For recently founded companies, it can take some time before RVO's systems sync the KvK data with eHerkenning, so it is worth checking this link well before an application deadline.

KvK (Chamber of Commerce)

Definition

KvK stands for Kamer van Koophandel, the Dutch Chamber of Commerce, which maintains the Handelsregister (trade register) in which every Dutch business — from sole traders to multinationals — must be registered. Registration gives your company a unique KvK number, which functions as its primary identifier in dealings with Dutch government bodies, banks and business partners. In the context of subsidies, your KvK number is one of the first pieces of information requested on almost every application form, including the WBSO, SLIM and SIB: it lets RVO verify your legal form, registered activities (via your SBI code) and registration date, all of which can affect eligibility and applicable rates — for example, whether a company qualifies as a starter. For applications submitted through mijn.rvo.nl, your KvK number also needs to be correctly linked to your eHerkenning login, and for recently founded companies this link can take some time to sync, so it is worth checking well before a deadline. Beyond subsidies, the KvK extract (uittreksel) is often required as supporting evidence during identity verification or an authorised-representative check. In short, the KvK registration is the administrative foundation on which almost every Dutch subsidy or tax application rests, which is why it is one of the first things to have in order before starting an application.

Frequently asked questions

What is a KvK number used for?: Your KvK number identifies your company in the Dutch trade register and is required on almost every subsidy application, including the WBSO, SLIM and SIB.
Do you need your KvK number for the WBSO?: Yes, RVO asks for your KvK number on the WBSO application form to verify your company's legal form, registered activities and registration date.
Why can a new company's KvK number cause delays with mijn.rvo.nl?: For recently founded companies, it can take some time before RVO's systems sync the KvK data with eHerkenning, so it is worth checking this link well before an application deadline.