Norway D Number vs National Identity Number: Which One Do You Get?

The Norwegian Tax Administration distinguishes a national identity number from a D number. A national identity number is associated with being registered as resident in the National Population Register. A D number is used when a person needs identification in Norway but is not registered as resident under the ordinary population-registration route.

That distinction matters because many guides incorrectly present a D number as a temporary personnummer that automatically upgrades after a fixed period. The real sequence depends on your legal stay, move notification, identity checks and the National Population Register decision.

Official guidance explains that a D number is often ordered by an enterprise or authority that has a recognised need to identify you—for example in tax or other public-service contexts. In some situations you may interact directly with the Tax Administration, but it is misleading to tell every newcomer to 'apply for a D number' as the first universal step.

Start from the transaction you need to complete: work/tax, business, property, public benefit or another recognised need. The responsible authority or organisation should tell you which identification route applies.

If you move to Norway and meet the conditions for resident registration, approval of the move to Norway can lead to registration in the National Population Register and assignment of a national identity number. The immigration right to live in Norway and population registration are linked in practice but are not the same administrative decision.

Do not delay an immigration or move-notification step because you are waiting to solve banking first. The dependency often runs the other way: correct residence and identity registration makes later services easier.

A Norwegian identification number is important across tax, public services and private-sector onboarding. But banks and electronic-ID issuers still perform their own identity and customer checks. BankID is issued by banks, not by the Tax Administration, and possession of a number does not override a bank's onboarding requirements.

Keep a dependency checklist: identification number, address/population registration, bank onboarding, electronic ID and healthcare/social-security access. Mark each as a separate status rather than treating one number as proof that every later step is complete.

Do not use D number, national identity number, residence permit and BankID as interchangeable terms. Do not pay unofficial services that claim they can sell a Norwegian identity number. And do not assume a D number means you are registered resident for every legal purpose.

If a service refuses your onboarding, ask which exact requirement is missing: identity level, registered address, tax status, residence status, valid ID document or the service provider's own policy. That question is more useful than repeatedly asking whether a D number is 'enough'.