Checklist step 1
D number or national identity number
How to get a Norwegian D number or national identity number, and why you need it first.
Work and benefits
A sole proprietorship (enkeltpersonforetak, ENK) is the simplest business form in Norway. You run it under your own full personal responsibility. It must be registered in the Central Coordinating Register for Legal Entities to get an organisation number, which you need for all commercial activity in Norway.
If you already have a national ID number or D-number:
If you have neither:
Most sole proprietorships don't have to register in the Register of Business Enterprises. Brreg lists the ones that must.