What is a KvK number?
The single most useful thing you can ask a Dutch tradesperson for before you let them in your home.
KvK stands for Kamer van Koophandel — the Dutch Chamber of Commerce. A KvK number is an 8-digit registration number that every legal business or self-employed person in the Netherlands is required by law to have. No KvK number means, legally speaking, no business.
Why it matters when hiring someone
A KvK registration is public record. Before you hire a klusser, you can look their KvK number up yourself at kvk.nl and see: how long the business has existed, its registered trade activities, and whether it's still active. A business that's been registered for several years under the same trade category is a very different risk than one registered last week under "other activities".
KvK number vs. BTW number
These are often confused but are two different numbers from two different government bodies: the KvK number registers the business, while the BTW number registers it for VAT. A legitimate business has both.
How Klussen Fixer uses this
Every klusser on the platform submits their KvK number during sign-up, and an admin checks it against the KvK register before the account is approved to send quotes. It's a manual step, deliberately — this is exactly the kind of check that's easy to skip and expensive to skip wrong.
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