D-number
Last updated: 18 July 2025.
A d-number is a number assigned to foreign nationals without a Norwegian national identity number, in need of some kind of identification towards Norwegian authorities.
We can only order d-number in cases where there is a need for a d-number related to the registration of roles in the Central Coordinating Register for Legal Entities and the Register of Business Enterprises or in connection with the registration of a marriage settlement.
Due to the requirement for a certified colour copy, in original, of an ID-document, connected to the application for a d-number, the application must be sent to us by post.
If you are going to be registered with a role, such as the chair of the board or a contact person, and you do not already have a national identity number or a d-number, you can apply for this in connection with submitting a coordinated register notification.
You must submit the Application for a d-number, BR1015B, by post together with an original confirmed colour copy of an ID-document and the paper version of the Coordinated register notification including attachments.
You can find a guide of how to fill out the form in the form itself.
Are you going to be registered as the owner of a sole proprietorship?
Individuals with a d-number, who are going to be registered as the owner of a sole proprietorship, must meet at the tax office for an ID-check prior to the registration.
This applies both to individuals who already have a d-number and individuals applying for a d-number in connection with the registration of a sole proprietorship.
You can find more information about d-number and ID-check on the Tax Administration website.
If you or your spouse do not have a national identity number or a d-number already, you can apply for this at the same time as submitting your marriage settlement for registration.
Submit the marriage settlement by post along with the form Application for a d-number, BR1015B and an original certified colour copy of the credential.
A guide telling you how to fill in the form is included in the application form.
The National Population Register, at the Tax Administration, assigns the d-numbers and sets the requirements for the ID documentation and the confirmations connected to the assignment of a d-number.
You can find information about the requirements and confirmations on the Tax Administration website.
If you are in need of a d-number in connections other than registration in our registers, you have to contact the organisation/office where you are going to have something done that leads to the need for a d-number. We cannot order a d-number in any other circumstances than those connected to a registration in our registers.
On the Tax Administration website you can read more about who can order a d-number.
If you already have a d-number, you use this if you are going to register with us.
If you do not have information about your d-number, or if you have any questions regarding your d-number, please contact the National Population Register, at the Tax Administration.
The National Population Register sends a confirmation regarding your d-number once they have assigned you a number. The confirmation is sent by post, to the address you have registered in the National Population Register.