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Inter Revisjon

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Inter Revisjon was a Norwegian chain of accountancy firms that provided auditing and related consultancy services until its 2011 merger with BDO Norway.

Last updated August 31, 2026

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Overview

Inter Revisjon was a Norwegian accountancy and auditing chain established in December 1985 and ultimately merged into BDO Norway in the summer of 2011. It operated through Norwegian member companies rather than as a conventional single-office accounting firm, giving the network a broad local presence while retaining common branding and coordination. Its principal activities were statutory and financial auditing, accounting-related work, and consultancy services for business clients. At its largest reported scale, Inter Revisjon had approximately 40 local offices distributed across Norway and around 400 employees. The network served about 18,000 clients, most of them small and medium-sized enterprises. This client profile placed the organization within the part of the professional-services market focused on locally based businesses requiring audit, accounting, tax, and business-advisory support. Its head office was in Trondheim. Inter Revisjon was wholly owned by its Norwegian members and was described as one of Norway's largest auditing chains. The member-company structure allowed firms in different parts of the country to operate locally while participating in a larger national network. The brand therefore represented a collective professional-services organization rather than a consumer-facing product line. The organization's major strategic turning point came in 2011, when the Inter Revisjon chain merged into BDO Norway. BDO Norway was part of BDO International, described in the reference material as the world's fifth-largest accountancy network at the time. The merger ended Inter Revisjon as an independent branded chain and brought its operations and member firms into the BDO organization. Subsequent online material associated with the former Inter Revisjon presence, including the former Interblogg blog, was redirected or transformed into BDO Loggen.

History

Inter Revisjon was established in December 1985 in Norway as a network of accountancy companies. Its member firms operated under a shared chain identity and mainly performed financial audits and related consultancy work. The organization was wholly owned by its Norwegian members, distinguishing it from a subsidiary controlled by an external multinational or a single corporate owner. Over the following decades, Inter Revisjon developed a substantial national footprint. At its maximum reported size, the chain had about 40 local offices across Norway and approximately 400 employees. Its head office was located in Trondheim. The organization served roughly 18,000 clients, with small and medium-sized enterprises forming the majority of its customer base. Its scale made it one of Norway's larger auditing chains, while its local-office structure allowed member firms to maintain regional relationships with business clients. The network's activities centered on professional services rather than branded consumer products. Its member companies carried out financial and statutory auditing and supplied related accounting and consulting services. These activities supported businesses that needed external audit work and associated professional advice, particularly in the small and medium-sized-enterprise segment. The decisive event in the brand's history occurred in the summer of 2011, when Inter Revisjon merged into BDO Norway. BDO Norway belonged to BDO International, a global accountancy network identified in contemporary reference material as the world's fifth-largest accountancy network. The transaction or combination integrated Inter Revisjon's chain into BDO Norway and brought the Inter Revisjon brand's independent existence to an end. Following the merger, digital material connected with the former organization was also incorporated into BDO's communications environment. The former Interblogg became associated with BDO Loggen. Inter Revisjon is therefore best understood as a defunct Norwegian professional-services network whose principal historical significance lies in its nationwide member-firm model, its substantial audit presence, and its absorption into BDO Norway in 2011.

  • 2011

    Merger with BDO Norway

    [1]

    In the summer of 2011, Inter Revisjon merged into BDO Norway and ceased operating as an independent chain.

  • 1985

    Inter Revisjon is established

    [1]

    Inter Revisjon was established in December 1985 as a Norwegian chain of accountancy companies.

  • National network reaches reported maximum scale

    [1]

    At its largest reported size, the chain operated approximately 40 local offices, employed about 400 people, and served around 18,000 clients, mainly small and medium-sized enterprises.

Products and positioning

A nationwide Norwegian network of locally based audit and accountancy firms serving primarily small and medium-sized enterprises.

  • Audit and assurance

    Financial audit services

    Financial auditing was the central service associated with Inter Revisjon's member companies. The network's firms performed audit work for Norwegian business clients through a distributed local-office structure, with the majority of clients reported to be small and medium-sized enterprises.

  • Professional services

    Related accountancy and consultancy services

    Alongside auditing, Inter Revisjon member companies provided related accountancy and consulting services. The available reference material does not identify separate named service packages, but describes these activities as part of the chain's broader support for business clients.

Brand decisions

  • 2011

    Merge the chain into BDO NorwayM&A

    Background

    Inter Revisjon was a large Norwegian audit chain with local member firms, while BDO Norway was part of the international BDO accountancy network.

    Action taken

    The Inter Revisjon chain merged into BDO Norway during the summer of 2011.

    Aftermath

    Inter Revisjon no longer operated as an independent brand, and related online communications were associated with BDO, including the transformation of the former Interblogg into BDO Loggen.

Sources1 sources

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