Company lists · Data refreshed September 2026

Top 25 Accounting and outsourcing services based in Norway

RevenueBase identified 524 accounting and outsourcing services headquartered in Norway as of September 2026 and tracks 5,901 professional contacts across them, including 1,995 with verified work emails and 179 with mobile numbers. Oslo is the largest hub.

This list covers accounting and outsourcing services headquartered in Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review
524Companies
5,901Contacts tracked
1,995Verified emails
179Mobile numbers
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The 25 largest accounting and outsourcing services based in Norway

Ranked by team size
Top 25 of 524 accounting and outsourcing services based in Norway, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to accounting and outsourcing services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceOslo, NorwayHQ checked Sep 22, 20261,001-5,0001,530 contacts →

Indirect evidence

“We see great value in having a local presence and roots, factors which enable us to work closely with our clients.”

Source: RevenueBase Database · checked Sep 22, 2026
2Partial evidenceFornebu, NorwayHQ checked Sep 22, 20261,001-5,000401 contacts →

Partial evidence

“Founded in 2013, ECIT has grown into an international provider of accounting & payroll, IT services and business solutions.”

Source: RevenueBase Database · checked Sep 22, 2026
3Indirect evidenceTrondheim, NorwayHQ checked Sep 22, 2026201-500360 contacts →

Indirect evidence

“SpareBank 1 Regnskapshuset SMN AS er totalleverandør av økonomiske tjenester innen forretnings- og landbruksregnskap samt eiendomsforvaltning.”

Source: RevenueBase Database · checked Sep 22, 2026
4Partial evidenceOslo, NorwayHQ checked Sep 22, 2026501-1,000242 contacts →

Partial evidence

“VIEW Group leverer outsourcing av regnskap, lønn, økonomi og IT-tjenester til norske, nordiske og globale selskaper med 10 til flere tusen ansatte.”

Source: RevenueBase Database · checked Sep 22, 2026
5Partial evidenceSandnes, NorwayHQ checked Sep 22, 2026201-500225 contacts →

Partial evidence

“SpareBank 1 Sør-Norge Forretningspartner is a leading provider of accounting and advisory services in Southern Norway.”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceNorwayHQ checked Sep 22, 2026501-1,000192 contacts →

Indirect evidence

“Med 70 kontorer over hele Norge er vi store, men også lokale.”

Source: RevenueBase Database · checked Sep 22, 2026
7Partial evidenceOslo, NorwayHQ checked Sep 22, 2026201-500104 contacts →

Partial evidence

“Innovative and flexible business solutions for professionals in accounting, finance, and administration.”

Source: RevenueBase Database · checked Sep 22, 2026
8Indirect evidenceHamar, NorwayHQ checked Sep 22, 202651-20087 contacts →

Indirect evidence

“Vi står klare når du skal videreutvikle, eller trenger hjelp til å drive selskapet ditt.”

Source: RevenueBase Database · checked Sep 22, 2026
9Indirect evidenceOslo, NorwayHQ checked Sep 22, 202651-20072 contacts →

Indirect evidence

“Vi lever i en verden drevet av endring.”

Source: RevenueBase Database · checked Sep 22, 2026
10Indirect evidenceGjøvik, NorwayHQ checked Sep 22, 202651-20048 contacts →

Indirect evidence

“Med solid erfaring innen regnskap, økonomisk rådgivning, IT og rekruttering hjelper vi bedrifter med å ta gode valg for en enklere, tryggere og mer lønnsom hverdag.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceSandefjord, NorwayHQ checked Sep 22, 202651-20040 contacts →

Indirect evidence

“Saga Regnskap & Rådgivning er et frittstående regnskapsbyrå som hjelper små og mellomstore bedrifter i Vestfold og Telemark til økt effektivitet og bedre lønnsomhet.”

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidence3181, NorwayHQ checked Sep 22, 202651-20037 contacts →

Indirect evidence

“Kunnskapshuset BDT Viken har en bred kompetanseplattform innen regnskap, rådgiving og revisjon med til sammen 50 ansatte.”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceHokksund, NorwayHQ checked Sep 22, 202651-20035 contacts →

Indirect evidence

“Account Group samarbeider tett med mange ulike virksomheter i hele landet.”

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceOslo, NorwayHQ checked Sep 22, 2026501-1,00035 contacts →

Indirect evidence

“ECIT NORIAN leverer tjenester innen regnskap, lønn og eiendomsforvaltning, samt systemløsninger med mål om å levere smartere, raskere og bedre enn alle andre.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceStavanger, NorwayHQ checked Sep 22, 202611-5034 contacts →

Indirect evidence

“Vi tilbyr regnskapsføring og rådgivning med personlig engasjement og tilnærming til våre kunder.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceSon, NorwayHQ checked Sep 22, 202611-5031 contacts →

Indirect evidence

“Vi gjør ting på andre måter!”

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceOslo, NorwayHQ checked Sep 22, 202611-5030 contacts →

Indirect evidence

“PKF ReVisjon er en revisjons- og rådgivningsvirksomhet med klienter innen et bredt spekter av forretningsområder.”

Source: RevenueBase Database · checked Sep 22, 2026
18Indirect evidenceStokke, NorwayHQ checked Sep 22, 202651-20029 contacts →

Indirect evidence

“Regnskapsførerselskap etablert i 1953.”

Source: RevenueBase Database · checked Sep 22, 2026
19Indirect evidenceNøtterøy, NorwayHQ checked Sep 22, 202611-5029 contacts →

Indirect evidence

“Oseberg Services er en utfordrer til de større regnskapsbyråene med fokus på personlig oppfølgning av kundene våre.”

Source: RevenueBase Database · checked Sep 22, 2026
20Indirect evidenceTrondheim, NorwayHQ checked Sep 22, 202651-20026 contacts →

Indirect evidence

“Tjenester som gir deg mer tid til kjernevirksomheten.”

Source: RevenueBase Database · checked Sep 22, 2026
21Indirect evidenceOslo, NorwayHQ checked Sep 22, 202611-5025 contacts →

Indirect evidence

“EconPartner was founded in 1961 and we have built up unique expertise in the years since.”

Source: RevenueBase Database · checked Sep 22, 2026
22Indirect evidenceOslo, NorwayHQ checked Sep 22, 202611-5023 contacts →

Indirect evidence

“Tandem er et kompetansehus og en tjenesteleverandør innenfor regnskap, lønn og økonomisk rådgivning.”

Source: RevenueBase Database · checked Sep 22, 2026
23Indirect evidenceLillehammer, NorwayHQ checked Sep 22, 202611-5023 contacts →

Indirect evidence

“Kantall er et regnskapsbyrå med solid kompetanse og dedikerte medarbeidere lokalisert på Lillehammer.”

Source: RevenueBase Database · checked Sep 22, 2026
24Indirect evidenceKristiansund, NorwayHQ checked Sep 22, 202651-20023 contacts →

Indirect evidence

“Ved årsskiftet vil SpareBank 1 Regnskapshuset Nordvest AS slå seg sammen med Trio Regnskapsservice og etablere SpareBank 1 Økonomipartner.”

Source: RevenueBase Database · checked Sep 22, 2026
25Indirect evidenceTønsberg, NorwayHQ checked Sep 22, 202611-5022 contacts →

Indirect evidence

“Want a local and independent auditing company with personal service, so ask us!”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 25 of 524 accounting and outsourcing services based in Norway

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Accounting and outsourcing services based in Norway at a glance

As of Sep 22, 2026
33.8%Verified-email coverage
3.0%Mobile-number coverage
11.3Average contacts per company
1-10Median size (employees)
19.3%Largest-city concentration · Oslo
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
331
11-50
155
51-200
18
201-500
5
501-1,000
7
1,001-5,000
4

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

Company record updated

Median 88.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among accounting and outsourcing services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Norway whose own description of what they do matches “accounting and outsourcing services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names accounting and outsourcing services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among accounting and outsourcing services, and records with no verified work email. Companies headquartered outside Norway are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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
Every listed company carries at least one verified work email, 1,995 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Accounting and outsourcing services by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names accounting and outsourcing services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many accounting and outsourcing services are there based in Norway?

RevenueBase identified 524 accounting and outsourcing services headquartered in Norway as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

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

Which city has the most accounting and outsourcing services?

Oslo leads with 101 headquartered companies, followed by Trondheim (16) and Drammen (13).

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 1,995 verified decision-maker contacts tracked across these 524 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.