Company lists · Data verified August 2026

Top 20 Accounting services outsourcing companies based in Oslo, Norway

Name: Accounting services outsourcing companies based in Oslo, Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 50 companies tracked

There are 50 accounting services outsourcing companies headquartered in Oslo, Norway (RevenueBase, August 2026). RevenueBase tracks 266 professional contacts across them, including 67 with verified work emails and 8 with mobile numbers. Oslo is the largest hub.

This list covers accounting services outsourcing companies 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.

50Companies

266Contacts tracked

67Verified emails

8Mobile numbers

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The 20 largest accounting services outsourcing companies based in Oslo, Norway

Ranked by team size

Top 20 of 50 accounting services outsourcing companies based in Oslo, Norway, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	FOLIO	Oslo	11-50	21	12
2	Randi Regnskap	Oslo	1-10	12	6
3	Amon Regnskap Oslo AS	Oslo	1-10	12	3
4	Alpha Revisjon AS	Oslo	11-50	11	9
5	Regnskapshuset AS	Oslo	11-50	10	4
6	Nimbus Regnskap	Oslo	11-50	9	5
7	Balanco Accounting AS	Oslo	1-10	8	5
8	On Time Regnskap	Oslo	11-50	8	1
9	Boox AS	Oslo	1-10	6	4
10	Data OG Økonomitjenester AS	Oslo	1-10	6	2
11	Incloud Consult AS	Oslo	1-10	5	4
12	Leija AS	Oslo	1-10	5	3
13	DM Regnskap Oslo AS	Oslo	1-10	5	1
14	BOK AS	Oslo	11-50	3	1
15	Numetric AS	Oslo	1-10	2	2
16	Regnskapssystemer AS	Oslo	1-10	2	1
17	Thune Økonomistyring AS	Oslo	1-10	2	1
18	TOR Kristian Dahlman AS	Oslo	1-10	2	1
19	Kristoffersen & Berg AS	Oslo	1-10	2	1
20	Trio Regnskap AS	Oslo	1-10	1	1

Showing 20 of 50 accounting services outsourcing companies based in Oslo, Norway

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Accounting services outsourcing companies based in Oslo, Norway at a glance

As of Aug 28, 2026

1-10Median size (employees)

OsloLargest hub · 50 HQs

8Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

501-1,000

1,001-5,000

Accounting services outsourcing companies by metro in Norway

Metro	Companies
Accounting services outsourcing companies in Oslo	50
Accounting services outsourcing companies in Trondheim	13
Accounting services outsourcing companies in Alesund	7
Accounting services outsourcing companies in Drammen	5
Accounting services outsourcing companies in Haugesund	4
Accounting services outsourcing companies in Bergen	4
Accounting services outsourcing companies in Larvik	3

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 services outsourcing companies”, 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 services outsourcing companies are there based in Oslo, Norway?

There are 50 accounting services outsourcing companies headquartered in Oslo, Norway as of August 2026 (RevenueBase).

What is the largest company on this list?

FOLIO, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most accounting services outsourcing companies?

Oslo leads with 50 headquartered companies, followed by Trondheim (13) and Alesund (7).

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 67 verified decision-maker contacts tracked across these 50 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.