Company lists · Data verified August 2026
Top 13 Accounting process outsourcing providers based in Oslo, Norway
There are 30 accounting process outsourcing providers headquartered in Oslo, Norway (RevenueBase, August 2026). RevenueBase tracks 128 professional contacts across them, including 31 with verified work emails and 5 with mobile numbers. Oslo is the largest hub.
This list covers accounting process outsourcing providers headquartered in Oslo, Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.
The 13 largest accounting process outsourcing providers based in Oslo, Norway
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 |  Amon Regnskap Oslo AS | 3 |
| 2 |  Regnskapshuset AS | 4 |
| 3 |  Nimbus Regnskap | 5 |
| 4 |  Boox AS | 4 |
| 5 |  Data OG Økonomitjenester AS | 2 |
| 6 |  Incloud Consult AS | 4 |
| 7 |  Leija AS | 3 |
| 8 | DM Regnskap Oslo AS | 1 |
| 9 |  Agente AS | 1 |
| 10 |  Inoxo Regnskap AS | 1 |
| 11 |  TOR Kristian Dahlman AS | 1 |
| 12 | Kristoffersen & Berg AS | 1 |
| 13 |  Trio Regnskap AS | 1 |
Showing 13 of 30 accounting process outsourcing providers based in Oslo, Norway
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Accounting process outsourcing providers based in Oslo, Norway at a glance
As of Aug 28, 2026Companies by employee count
Accounting process outsourcing providers by metro in Norway
| Metro | Companies |
|---|---|
| Accounting process outsourcing providers in Oslo | 30 |
| Accounting process outsourcing providers in Trondheim | 7 |
| Accounting process outsourcing providers in Alesund | 5 |
| Accounting process outsourcing providers in Bergen | 4 |
| Accounting process outsourcing providers in Drammen | 4 |
| Accounting process outsourcing providers in Skien | 3 |
| Accounting process outsourcing providers in Haugesund | 2 |
How this list was built
- Source
- The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- Inclusion
- Companies whose own business descriptions match “accounting process outsourcing providers”, with match quality audited by blind human judging, and headquartered in Oslo, Norway.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
- Refresh
- Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.
Frequently asked
How many accounting process outsourcing providers are there based in Oslo, Norway?
There are 30 accounting process outsourcing providers headquartered in Oslo, Norway as of August 2026 (RevenueBase).
What is the largest company on this list?
Amon Regnskap Oslo AS, headquartered in Oslo, tops this list with the largest team on record.
Which city has the most accounting process outsourcing providers?
Oslo leads with 30 headquartered companies, followed by Trondheim (7) and Alesund (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 31 verified decision-maker contacts tracked across these 30 companies.
How current is this list?
The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.
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