In practice, the publications submit circulation figures through their organizations.
The Norwegian Audit Bureau of Circulations usually provides advance recognition based on the figures, and then performs local checks on a portion of the member papers.
The approved net circulation figures are of major economic importance to the various publications: they are the decisive factor for income from the advertising market, and are the basis for receiving press subsidies.
The Norwegian Audit Bureau of Circulations has an office in Porsgrunn and it has been headed by Henry Nilsen since 2010.
[1][2] The company is an affiliate member of the International Federation of Audit Bureaux of Circulations.