Under which registration number is the undertaking registered?

The Chamber of Commerce number, which can be found in the Business Register

The registration number that customers ask for is the Chamber of Commerce number: the number under which the company is registered in the Business Register. This number consists of eight digits and is unique per company. It appears on the extract from the Business Register and on most business documents of the company, such as quotations and invoices.

For lists that specifically ask outside the Netherlands for an equivalent — a VAT number, a LEI code, or a local business register number in another country — this concerns a different number than the Chamber of Commerce number. Check if in doubt what the inquirer specifically means: is it about the Dutch registration, or about a registration that is connected to the countries where the company has establishments. For a group with multiple entities, this answer moreover logically belongs with the legal name of the company: the Chamber of Commerce number is namely linked to one specific legal entity or establishment, not to the group as a whole. Enter therefore the number of the entity that actually supplies the customer, not automatically that of the parent company.

Recorded as core data of the registration

That every company receives a unique registration number upon registration in the Business Register follows from the Business Register Act 2007, which regulates which data of a company are recorded and maintained. The number itself is assigned by the Chamber of Commerce upon registration and is one of the data that is publicly accessible.