Applying for an A1 certificate free of charge via TWinternet
It is easy to apply for an A1 certificate (certificate of coverage) online via TWinternet. However, this is only possible for companies based in the Netherlands
Be careful how you apply for an A1 certificate
You can apply directly to us for an A1 certificate and it will not cost you anything. There are companies that offer to apply for an A1 certificate for you, but they will ask you for money. That is not necessary. If you want an A1 certificate, always apply directly to us.
Before you can work with TWinternet, you will have to apply for an account. You can only do this if your company is based in the Netherlands.
To apply for an account, you will need:
- your Chamber of Commerce number (KVK-nummer), and
- your Chamber of Commerce branch number (vestigingsnummer), and
- your payroll tax number
If you forget your password or username, you must apply for a new account. You will have to choose a new username.
If your company is based outside the Netherlands, you can fill in a paper application form.