Company lists · Data refreshed September 2026

Top 25 Business formation and accounting firms worldwide

Name: Business formation and accounting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 45,862 companies tracked

RevenueBase identified 45,862 business formation and accounting firms worldwide as of September 2026 and tracks 288,378 professional contacts across them, including 96,646 with verified work emails and 43,521 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers business formation and accounting firms worldwide, 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 28, 2026. Country and city lists for business formation and accounting firms follow the table.

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 28, 2026 86% judged on-target in blind review

45,862Companies

288,378Contacts tracked

96,646Verified emails

43,521Mobile numbers

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The 25 largest business formation and accounting firms worldwide

Ranked by team size

Top 25 of 45,862 business formation and accounting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to business formation and accounting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Grant Thornton Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	1,001-5,000	2,374 contacts →
	Indirect evidence “In Ireland, Grant Thornton Ireland and Grant Thornton Corporate Finance Limited (and their respective subsidiary/affiliate entities) operate under an alternative practice…” Source: RevenueBase Database · checked Sep 28, 2026
2	Fiteco	Indirect evidence	Changé, FranceHQ checked Sep 28, 2026	1,001-5,000	1,634 contacts →
	Indirect evidence “Nos solutions personnalisées pour vous et votre #entreprise : Vous reprenez ou créez une entreprise?#Entrepreneur Vous souhaitez être épaulé dans les tâches administratives et la…” Source: RevenueBase Database · checked Sep 28, 2026
3	Securex	Indirect evidence	Brussel - Bruxelles, BelgiumHQ checked Sep 28, 2026	1,001-5,000	1,626 contacts →
	Indirect evidence “At Securex, we help you catch a breather.” Source: RevenueBase Database · checked Sep 28, 2026
4	Partena Professional	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1,001-5,000	1,411 contacts →
	Indirect evidence “Partena Professional is a service provider with a strong focus on entrepreneurship and personnel management.” Source: RevenueBase Database · checked Sep 28, 2026
5	UCM	Indirect evidence	Wierde, BelgiumHQ checked Sep 28, 2026	1,001-5,000	1,234 contacts →
	Indirect evidence “La réalité des indépendants et PME, c’est notre réalité.” Source: RevenueBase Database · checked Sep 28, 2026
6	BDO Luxembourg	Indirect evidence	LuxembourgHQ checked Sep 28, 2026	501-1,000	600 contacts →
	Indirect evidence “BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.” Source: RevenueBase Database · checked Sep 28, 2026
7	Buzzacott	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	575 contacts →
	Indirect evidence “Buzzacott is an accountancy and advisory firm with a long-standing history of supporting individuals, businesses, and not-for-profits.” Source: RevenueBase Database · checked Sep 28, 2026
8	MG Contécnica	Indirect evidence	São Paulo, BrazilHQ checked Sep 28, 2026	501-1,000	533 contacts →
	Indirect evidence “A MG Contécnica é considerada um dos maiores escritórios de consultoria empresarial do mercado, com vasta experiência e com grande diferencial em serviços contábeis a empresa…” Source: RevenueBase Database · checked Sep 28, 2026
9	SBB Accountants & Advisors	Indirect evidence	Leuven, BelgiumHQ checked Sep 28, 2026	501-1,000	515 contacts →
	Indirect evidence “Welcome to SBB, a firm of experienced accountants and tax consultants with 30 branches in Belgium.” Source: RevenueBase Database · checked Sep 28, 2026
10	GVA	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	499 contacts →
	Indirect evidence “Créé en 1975, GVA est composé de 80 personnes, pour près de 10 millions de chiffre d’affaires.” Source: RevenueBase Database · checked Sep 28, 2026
11	FED	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	n/a	474 contacts →
	Indirect evidence “La FED est une société d’expertise-comptable avec une mission précise : accompagner les entrepreneurs,favoriser leur réussite.Grâce à nos valeurs, nous bâtissons une relation de…” Source: RevenueBase Database · checked Sep 28, 2026
12	NTW Contabilidade E Gestão Empresarial	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 28, 2026	501-1,000	435 contacts →
	Indirect evidence “A NTW Contabilidade é uma prestadora de serviços contábeis e de consultoria na área financeira e de gestão empresarial.” Source: RevenueBase Database · checked Sep 28, 2026
13	FBL S.E.N.C.R.L. Société DE Comptables Professionnels Agréés	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 28, 2026	201-500	347 contacts →
	Indirect evidence “FBL \| SOCIÉTÉ DE COMPTABLES PROFESSIONNELS AGRÉÉS Ayant été désigné comme étant l’un des dix plus grands cabinets au Québec, FBL jouit d’une solide expertise depuis plus de 40 ans.” Source: RevenueBase Database · checked Sep 28, 2026
14	In Extenso Centre Ouest	Indirect evidence	Cholet, FranceHQ checked Sep 28, 2026	501-1,000	313 contacts →
	Indirect evidence “In Extenso Centre Ouest, dirigé par Jean-François Trouillard est un acteur majeur de l’expertise comptable et des services professionnels pour les TPE-PME dans l’ouest de la…” Source: RevenueBase Database · checked Sep 28, 2026
15	Looking For NEW Opportunities	Partial evidence	Stapleford, United KingdomHQ checked Sep 28, 2026	n/a	296 contacts →
	Partial evidence “Accounting services for sole traders and SME’s.” Source: RevenueBase Database · checked Sep 28, 2026
16	Alaska Advisors Accountants Auditors	Indirect evidence	Kortrijk, BelgiumHQ checked Sep 28, 2026	51-200	290 contacts →
	Indirect evidence “We are your guide on the adventure of entrepreneurship!” Source: RevenueBase Database · checked Sep 28, 2026
17	Afigec	Partial evidence	Paris - Levallois Perret, FranceHQ checked Sep 28, 2026	201-500	263 contacts →
	Partial evidence “Afigec is a multi-skilled accounting firm that is constantly improving the usual client relationship framework and the proximity with its clients.” Source: RevenueBase Database · checked Sep 28, 2026
18	Martinsen	Indirect evidence	Kolding, DenmarkHQ checked Sep 28, 2026	201-500	259 contacts →
	Indirect evidence “Martinsen er et ambitiøst og fagligt stærkt revisionsfirma med lokale, selvstændige kontorer.” Source: RevenueBase Database · checked Sep 28, 2026
19	Segal Gcse LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	201-500	258 contacts →
	Indirect evidence “At Segal GCSE LLP, we embrace an ambitious firm philosophy: to provide our valued clients with an expansive service experience that enables greater opportunities for growth and…” Source: RevenueBase Database · checked Sep 28, 2026
20	l-expert-comptable.com	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	257 contacts →
	Indirect evidence “Leader des cabinets d’expertise comptable en ligne et portail de référence sur l’entrepreneuriat, nous sommes spécialisés dans la création d'entreprise (freelance et indépendants)…” Source: RevenueBase Database · checked Sep 28, 2026
21	Fidsud	Indirect evidence	Toulouse, FranceHQ checked Sep 28, 2026	201-500	245 contacts →
	Indirect evidence “FIDSUD, cabinet d'expertise comptable, de conseil aux dirigeants, et d'audit fortement implanté dans le Grand Sud de la France (Aquitaine, Midi-Pyrénées, Languedoc Roussillon…” Source: RevenueBase Database · checked Sep 28, 2026
22	Extencia Cabinet D'expertise Comptable	Indirect evidence	Bordeaux, FranceHQ checked Sep 28, 2026	201-500	237 contacts →
	Indirect evidence “Fondé en 1944, Extencia est un cabinet d'expertise comptable indépendant qui a su évoluer avec son temps tout en conservant ses valeurs fondamentales.” Source: RevenueBase Database · checked Sep 28, 2026
23	TAX Economistas Y Abogados	Indirect evidence	Figueres, SpainHQ checked Sep 28, 2026	201-500	233 contacts →
	Indirect evidence “TAX Economistas y Abogados es un grupo con 50 asesorías de empresa, con más de 35 años de experiencia en el sector y 300 profesionales.” Source: RevenueBase Database · checked Sep 28, 2026
24	CF Contabilidade	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 28, 2026	51-200	230 contacts →
	Indirect evidence “Iniciamos nossas atividades em 1989 com um propósito claro: blindar o empresário contra as ameaças ao patrimônio, permitindo que o empreendedor foque no que realmente importa, o…” Source: RevenueBase Database · checked Sep 28, 2026
25	Capeos	Indirect evidence	Rennes, FranceHQ checked Sep 28, 2026	201-500	223 contacts →
	Indirect evidence “CAPEOS accompagne la gestion et le développement d’entreprises depuis plus de 45 ans.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: business formation and accounting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names business formation and accounting firms.
Partial evidence: Its own public description names part of business formation and accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business formation and accounting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 45,862 business formation and accounting firms worldwide

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Business formation and accounting firms worldwide at a glance

As of Sep 28, 2026

33.5%Verified-email coverage

15.1%Mobile-number coverage

6.3Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

32,623

11-50

11,221

51-200

1,371

201-500

161

501-1,000

1,001-5,000

5,001-10,000

10001+

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 business formation and accounting firms, 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.
Coverage: 38 countries, largest first: the United States, Brazil, the United Kingdom, France, Canada, Australia, Italy, South Africa, Belgium, Spain and 28 more. Country and city lists for business formation and accounting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “business formation and accounting firms”. 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 business formation and accounting firms), 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 business formation and accounting firms, and records with no verified work email.
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, 96,646 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 28, 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.

Business formation and accounting firms by location

217 lists · largest first

Every Business formation and accounting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 business formation and accounting firms, 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 business formation and accounting firms are there worldwide?

RevenueBase identified 45,862 business formation and accounting firms worldwide 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?

Grant Thornton Ireland, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most business formation and accounting firms?

The United States leads with 15,223 companies, followed by Brazil (7,211) and the United Kingdom (5,220). Every business formation and accounting firms list by country and city is linked on this page.

Which city has the most business formation and accounting firms?

Sao Paulo leads with 1129 headquartered companies, followed by London (1032) and Paris (377).

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 96,646 verified decision-maker contacts tracked across these 45,862 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 28, 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.