KVK number: all you need to know

When you register your business in the Dutch Business Register (Handelsregister), you are given an 8-digit KVK number. Your KVK number is proof of your registration at the Netherlands Chamber of Commerce KVK. It also proves that you officially have a business.

Finding the KVK number

You can find your KVK number in the following places:

Check your company name

You can also fill in your company name in this search bar to find your KVK number (leads to a Dutch results page). You can also use this to find or check another company’s KVK number.

View the details of your sole proprietorship online

Visit My Sole Proprietorship and log in with your DigiD. Select your sole proprietorship to view your details free of charge. The details online match the details on the KVK extract. This service is currently available to sole proprietorships.

The KVK Business Register app is no longer supported

The KVK Handelsregister app made it possible to easily check the details of your clients. For example, their address, telephone number and other useful information about your business contacts. You could also use it to view the details of your own business. However, the app is no longer supported and you can no longer request information from it.

Do you want to request the Business Register data that you could previously view free of charge via the app? Please submit a request by emailing inzage@kvk.nl. In the subject line, please state the KVK number of the business you wish to receive information about. You will receive an email with the Business Register information within 2 working days.

Via this email address, you can request information from the Business Register free of charge up to 25 times per year. If you have any other questions, please visit our service & contact pages.

When do you receive a KVK number?

You receive your KVK number when you register your company in the Dutch Business Register (Handelsregister). If your business is set to start operating within 8 days of the registration date, you receive the KVK number straightaway. 

If you register for a later starting date, you will receive your KVK number by letter, a week prior to that date. You can pre-register up to 3 months in advance. 

If you transfer your company, or take over a company, the KVK number will change. A new owner means a new number. You also receive a new KVK number if you change your company’s legal structure.

Where do you state your KVK number?

The KVK number enables businesses and private individuals to find out with whom they are doing business. They can look up your KVK number in the Business Register. For that reason, you are obliged to state your KVK number on:

  • letters
  • orders
  • invoices
  • quotations
  • websites
  • business emails

You do not have to state your KVK number if you are one of the following:

  • an association
  • a foundation without enterprise
  • an owners’ association (VvE in Dutch)
  • a public body or other governmental organisation
  • a religious community

When do you use your KVK number?

You need your KVK number for every business purchase, subscription or insurance. You need it to prove that you are making these commitments as a business, and not as an individual. Examples are:

  • purchases from a wholesaler
  • company cars
  • business insurance
  • subscriptions and phone contracts
  • business bank accounts
  • company credits

More than one activity

You are registered as a sole proprietor, but you also want to pursue other activities. You can add activities to your registration. You can also register more than one trade name. When you add activities to your registration, you do not receive a second KVK number. KVK does assign an SBI code to your business activity. You can also specify an SBI code yourself. KVK will check if this code fits your activities.

What is the difference between a VAT (btw) number and a KVK number?

When you register your company with KVK, you receive your KVK number. This is the number on your Business Register extract. KVK forwards your details to the Tax and Customs Administration (Belastingdienst). They will send you your VAT identification number (btw-id) and VAT number (btw-nummer) by post within 3 weeks. The btw-id consists of 14 digits. The KVK number has 8 digits. You are obliged to put both numbers on your invoices.

Finding a btw-id

You can find your own btw-id on the correspondence you receive from the Dutch Tax Administration. You can find the btw-id of companies you do business with on the invoices and quotations they send you. You cannot find the btw-id of other companies online. There is no online register of btw-ids. If you want to know a company’s btw-id, you must ask them for it.

Is the KVK number the same as the ‘vestigingsnummer’?

Each branch or office of your company receives a so-called ‘vestigingsnummer’, that consists of 12 digits. This number is also stated on your Business Register extract. It is related to your KVK number in that all your vestigingsnummers belong to the same KVK number, but they are not the same. Also, you do not need to state your vestigingsnummer on your correspondence or other business dealings.

Deregister at KVK

If you want to end your company, you must deregister at KVK. Use the checklist for ending your company, so that you do not forget any important steps.

International equivalents

Are you looking for the business register number of a business in another country? Almost all countries have a register that is maintained by a chamber of commerce, ministry or other government organisation.


Do you have any other questions about the KVK number, or about registration at KVK? Do not hesitate to contact us, we are here to help. You can reach us on (+31) 088 585 1585, on working days from 08:30 through 17:30 hours. You can also fill out this online form (this link takes you to Business.gov.nl, but the form will be sent to KVK).

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Last updated on 4 August 2022

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