The Norwegian Tax Administration receives confirmation of the applicant's permit type and of the date of arrival to Norway. Because the applicant must report to the police within seven days, the Tax Administration will know when the applicant can be assigned a Norwegian identity number.

In selection mission cases, UDI notifies the Tax Administration of the arrival date, and the Tax Administration checks the immigration administration’s computer system (DUF) daily to see whether the cases have been processed by the police. As soon as the police have completed processing the case, the Tax Administration can issue a Norwegian national identity number.

In dossier cases, UDI notifies the Tax Administration when a decision has been made, and the Tax Administration can issue an identity number.