Company lists · Data refreshed September 2026

Top 25 Tax consulting firms worldwide

Name: Tax consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 35,166 companies tracked

RevenueBase identified 35,166 tax consulting firms worldwide as of September 2026 and tracks 365,775 professional contacts across them, including 112,403 with verified work emails and 54,403 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers tax consulting 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 6, 2026. Country and city lists for tax consulting 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 6, 2026 86% judged on-target in blind review

35,166Companies

365,775Contacts tracked

112,403Verified emails

54,403Mobile numbers

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The 25 largest tax consulting firms worldwide

Ranked by team size

Top 25 of 35,166 tax consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to tax consulting 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	CA Firm	Indirect evidence	Chennai, IndiaHQ checked Sep 6, 2026	n/a	10,260 contacts →
	Indirect evidence “The core business of our firm is to provide comprehensive package of accounting, secretarial, taxation and business advisory services to Corporate Clients.” Source: RevenueBase Database · checked Sep 6, 2026
2	MNP	Strong evidence	Calgary, AB, CanadaHQ checked Sep 6, 2026	5,001-10,000	8,773 contacts →
	Strong evidence “MNP is a leading national accounting, tax and business consulting firm in Canada.” Source: RevenueBase Database · checked Sep 6, 2026
3	Kpmg Nederland	Partial evidence	Amstelveen, NetherlandsHQ checked Sep 6, 2026	1,001-5,000	3,701 contacts →
	Partial evidence “KPMG Nederland levert hoogwaardige dienstverlening op het gebied van audit, tax en advisory.” Source: RevenueBase Database · checked Sep 6, 2026
4	Kpmg Ireland	Partial evidence	Dublin 2, IrelandHQ checked Sep 6, 2026	1,001-5,000	2,952 contacts →
	Partial evidence “KPMG is a leading provider of professional services, offering a range of audit, tax and advisory services to a broad range of domestic and international clients across all sectors…” Source: RevenueBase Database · checked Sep 6, 2026
5	Garrigues	Partial evidence	Madrid, SpainHQ checked Sep 6, 2026	1,001-5,000	2,853 contacts →
	Partial evidence “Garrigues is an international legal and tax services firm that advises clients locally, regionally and globally from every angle of business law.” Source: RevenueBase Database · checked Sep 6, 2026
6	Grant Thornton Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 6, 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 6, 2026
7	PWC Sweden	Indirect evidence	Stockholm, SwedenHQ checked Sep 6, 2026	1,001-5,000	2,276 contacts →
	Indirect evidence “På PwC hjälper vi våra kunder att bygga förtroende och ställa om sin verksamhet för att öka konkurrenskraften.” Source: RevenueBase Database · checked Sep 6, 2026
8	TAX Consultant	Indirect evidence	Brighton, United KingdomHQ checked Sep 6, 2026	n/a	2,042 contacts →
	Indirect evidence “A traditional general practice, with a twist.” Source: RevenueBase Database · checked Sep 6, 2026
9	S&w	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	1,001-5,000	1,930 contacts →
	Indirect evidence “As a fast growing UK accounting and advisory firm, we’ve been there, as a trusted partner, helping businesses and individuals meet challenges and seize opportunities across…” Source: RevenueBase Database · checked Sep 6, 2026
10	BDO Brazil	Indirect evidence	Sp, BrazilHQ checked Sep 6, 2026	1,001-5,000	1,791 contacts →
	Indirect evidence “Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.” Source: RevenueBase Database · checked Sep 6, 2026
11	BDO Germany	Strong evidence	Hamburg, GermanyHQ checked Sep 6, 2026	1,001-5,000	1,576 contacts →
	Strong evidence “BDO is the leading entrepreneurial driven provider for audit and audit-related services, tax and business law consulting as well as advisory services.” Source: RevenueBase Database · checked Sep 6, 2026
12	BDO In Indonesia	Indirect evidence	Jakarta, IndonesiaHQ checked Sep 6, 2026	501-1,000	1,508 contacts →
	Indirect evidence “BDO is the leading provider of professional services within the mid-tier of our profession.” Source: RevenueBase Database · checked Sep 6, 2026
13	RSM Ebner Stolz	Indirect evidence	Stuttgart, GermanyHQ checked Sep 6, 2026	1,001-5,000	1,442 contacts →
	Indirect evidence “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Source: RevenueBase Database · checked Sep 6, 2026
14	Moore Kingston Smith	Indirect evidence	London, United KingdomHQ checked Sep 6, 2026	501-1,000	1,151 contacts →
	Indirect evidence “At Moore Kingston Smith, we believe in the potential of people to make a positive impact, fuelled by the power of genuine understanding.” Source: RevenueBase Database · checked Sep 6, 2026
15	AAB	Indirect evidence	Uk And Ireland, United KingdomHQ checked Sep 6, 2026	1,001-5,000	1,125 contacts →
	Indirect evidence “We provide services that help businesses at every stage of the lifecycle.” Source: RevenueBase Database · checked Sep 6, 2026
16	WIPRO	Indirect evidence	Valencia, SpainHQ checked Sep 6, 2026	n/a	1,097 contacts →
	Indirect evidence “En Wipro impulsamos el progreso.” Source: RevenueBase Database · checked Sep 6, 2026
17	WTS Deutschland	Indirect evidence	München, GermanyHQ checked Sep 6, 2026	1,001-5,000	882 contacts →
	Indirect evidence “WTS ist ein globaler Full-Service Anbieter für Steuerberatungsleistungen und Financial & Deal Advisory.” Source: RevenueBase Database · checked Sep 6, 2026
18	Bonellierede	Indirect evidence	Milan, ItalyHQ checked Sep 6, 2026	501-1,000	819 contacts →
	Indirect evidence “BonelliErede è leader in Italia nei servizi legali e fiscali, attivo in tutti i settori del diritto commerciale e nel diritto penale d'impresa.” Source: RevenueBase Database · checked Sep 6, 2026
19	PWC Hungary	Indirect evidence	Budapest, HungaryHQ checked Sep 6, 2026	501-1,000	749 contacts →
	Indirect evidence “A PwC Magyarország közel három évtizede nyújt ügyfeleinek nemzetközi színvonalú szolgáltatást könyvvizsgálat, adótanácsadás és üzleti tanácsadás területeken.” Source: RevenueBase Database · checked Sep 6, 2026
20	EY Société D'avocats	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	735 contacts →
	Indirect evidence “EY Société d’avocats se mobilise pour concrétiser les potentiels: c’est ainsi que nous faisons la différence pour nos clients, nos équipes et tous nos interlocuteurs.” Source: RevenueBase Database · checked Sep 6, 2026
21	Blick Rothenberg	Partial evidence	Covent Garden, United KingdomHQ checked Sep 6, 2026	501-1,000	701 contacts →
	Partial evidence “Blick Rothenberg is a leading tax, accounting and business advisory firm founded on personal integrity and technical expertise.” Source: RevenueBase Database · checked Sep 6, 2026
22	Deloitte Société D'avocats	Partial evidence	Paris La Défense, FranceHQ checked Sep 6, 2026	501-1,000	690 contacts →
	Partial evidence “Deloitte Société d'Avocats is one of the leading French law firms, specializing in international tax and legal strategies.” Source: RevenueBase Database · checked Sep 6, 2026
23	Chevez Ruiz Zamarripa	Indirect evidence	Ciudad De Mexico, MexicoHQ checked Sep 6, 2026	501-1,000	683 contacts →
	Indirect evidence “Chevez Ruiz Zamarripa, es una firma especializada en la Asesoría y Consultoría Fiscal de alto nivel, que se distingue por prestar servicios personalizados con total…” Source: RevenueBase Database · checked Sep 6, 2026
24	Haysmac	Partial evidence	London, United KingdomHQ checked Sep 6, 2026	501-1,000	655 contacts →
	Partial evidence “HaysMac is an award‑winning accountancy, tax and advisory firm, known for delivering expert, partner‑led advice to ambitious organisations and individuals.” Source: RevenueBase Database · checked Sep 6, 2026
25	Flick Gocke Schaumburg	Partial evidence	Bonn, GermanyHQ checked Sep 6, 2026	501-1,000	651 contacts →
	Partial evidence “Flick Gocke Schaumburg is an independent partnership of lawyers, tax advisors and auditors working with more than 320 professionals from offices in Berlin, Bonn, Düsseldorf…” Source: RevenueBase Database · checked Sep 6, 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: tax consulting 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 tax consulting firms.
Partial evidence: Its own public description names part of tax consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name tax consulting 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 35,166 tax consulting firms worldwide

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Tax consulting firms worldwide at a glance

As of Sep 6, 2026

30.7%Verified-email coverage

14.9%Mobile-number coverage

10.4Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · Sao Paulo

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

21,804

11-50

10,716

51-200

1,760

201-500

241

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 tax consulting 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: 51 countries, largest first: the United States, Germany, Brazil, Italy, India, the United Kingdom, Spain, Australia, the Netherlands, Canada and 41 more. Country and city lists for tax consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “tax consulting 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 tax consulting 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 tax consulting 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, 112,403 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 between September 6, 2026 and September 14, 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.

Tax consulting firms by location

193 lists · largest first

Every Tax consulting 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 tax consulting 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 tax consulting firms are there worldwide?

RevenueBase identified 35,166 tax consulting 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?

CA Firm, headquartered in Chennai, tops this list with the largest team on record.

Which country has the most tax consulting firms?

The United States leads with 9,477 companies, followed by Germany (4,982) and Brazil (3,735). Every tax consulting firms list by country and city is linked on this page.

Which city has the most tax consulting firms?

Sao Paulo leads with 809 headquartered companies, followed by London (410) and Berlin (268).

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 112,403 verified decision-maker contacts tracked across these 35,166 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 14, 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.