Company lists · Data refreshed September 2026

Top 25 Tax advisory firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 41,271 companies tracked

RevenueBase identified 41,271 company matches for tax advisory firms worldwide as of September 2026 and tracks 355,361 professional contacts across them, including 96,691 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for tax advisory firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 22, 2026. Country and city lists for tax advisory firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 22, 2026 How this list was built

41,271Companies

355,361Contacts tracked

96,691Verified emails

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The 25 largest tax advisory firms worldwide

Ranked by team size

Top 25 of 41,271 company matches for tax advisory firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	CA Firm	Exact match	Chennai, IndiaHQ recorded Sep 22, 2026	n/a	10,260 contacts →
	Exact match “The core business of our firm is to provide comprehensive package of accounting, secretarial, taxation and business advisory services to Corporate Clients.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2	Grant Thornton Ireland	Exact match	Dublin, IrelandHQ recorded Sep 22, 2026	1,001-5,000	2,374 contacts →
	Exact match “In Ireland, Grant Thornton Ireland and Grant Thornton Corporate Finance Limited (and their respective subsidiary/affiliate entities) operate under an alternative practice…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3	BDO Germany	Exact match	Hamburg, GermanyHQ recorded Sep 22, 2026	1,001-5,000	1,576 contacts →
	Exact match “BDO is the leading entrepreneurial driven provider for audit and audit-related services, tax and business law consulting as well as advisory services.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4	Moore Kingston Smith	Exact match	London, United KingdomHQ recorded Sep 22, 2026	501-1,000	1,151 contacts →
	Exact match “At Moore Kingston Smith, we believe in the potential of people to make a positive impact, fuelled by the power of genuine understanding.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5	WIPRO	Exact match	Valencia, SpainHQ recorded Sep 22, 2026	n/a	1,097 contacts →
	Exact match “En Wipro impulsamos el progreso.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6	Kpmg Czech Republic	Exact match	Prague, Czech RepublicHQ recorded Sep 22, 2026	1,001-5,000	858 contacts →
	Exact match “Poskytujeme služby v oblasti auditu, daní, poradenství a práva.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7	Deloitte Société D'avocats	Exact match	Paris La Défense, FranceHQ recorded Sep 22, 2026	501-1,000	690 contacts →
	Exact match “Deloitte Société d'Avocats is one of the leading French law firms, specializing in international tax and legal strategies.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8	Flick Gocke Schaumburg	Exact match	Bonn, GermanyHQ recorded Sep 22, 2026	501-1,000	651 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9	KUMAR	Exact match	United StatesHQ recorded Sep 22, 2026	1,001-5,000	627 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10	Heuking	Exact match	Düsseldorf, GermanyHQ recorded Sep 22, 2026	1,001-5,000	620 contacts →
	Exact match “HEUKING is a partnership consisting of about 450 lawyers, tax advisors, and notaries.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11	BDO Luxembourg	Exact match	LuxembourgHQ recorded Sep 22, 2026	501-1,000	600 contacts →
	Exact match “BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12	Buzzacott	Exact match	London, United KingdomHQ recorded Sep 22, 2026	501-1,000	575 contacts →
	Exact match “Buzzacott is an accountancy and advisory firm with a long-standing history of supporting individuals, businesses, and not-for-profits.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13	Bennett Thrasher	Exact match	Atlanta, GA, United StatesHQ recorded Sep 22, 2026	201-500	558 contacts →
	Exact match “Bennett Thrasher provides proven guidance for financial confidence through premier tax, audit, advisory, and outsourcing solutions.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14	H&r Block Australia	Exact match	Thornleigh, AustraliaHQ recorded Sep 22, 2026	501-1,000	412 contacts →
	Exact match “As Australia’s largest preparer of personal income tax returns, with over 400 offices across Australia, expert help is never far away.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15	VLH	Exact match	Neustadt An Der Weinstrasse, GermanyHQ recorded Sep 22, 2026	1,001-5,000	373 contacts →
	Exact match “Deutschlands Nr.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16	Transaction Square	Exact match	Mumbai, IndiaHQ recorded Sep 22, 2026	201-500	274 contacts →
	Exact match “Transaction Square is a Tax, Regulatory and Business Advisory firm founded by entrepreneurial Big-4 Partners having collective advisory experience spanning over 3 decades.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17	Singhvi DEV & Unni Llp, Chartered Accountants	Exact match	Bangalore, IndiaHQ recorded Sep 22, 2026	201-500	273 contacts →
	Exact match “Established in the year 1981, Singhvi Dev & Unni LLP, Chartered Accountants (SDU), is a professional services firm headquartered in Bengaluru, India and also operating from its…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18	Taxprime	Exact match	Jakarta Selatan, IndonesiaHQ recorded Sep 22, 2026	201-500	269 contacts →
	Exact match “TaxPrime is a Tax Consulting Firm, based in Jakarta, the Capital City of Indonesia.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19	TPA Austria	Exact match	Vienna, AustriaHQ recorded Sep 22, 2026	1,001-5,000	260 contacts →
	Exact match “TPA is one of the leading tax advisory and auditing services companies in Austria as well as in Central and South Eastern Europe.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20	FBC Farm And Small Business TAX Consultants	Exact match	Calgary, AB, CanadaHQ recorded Sep 22, 2026	201-500	260 contacts →
	Exact match “For more than 70 years, our focus has always been to bring financial peace of mind to our Canadian business owners.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21	Atoz TAX Advisers	Exact match	Senningerberg, LuxembourgHQ recorded Sep 22, 2026	51-200	242 contacts →
	Exact match “We are a high-end independent advisory firm offering a comprehensive and integrated range of direct and indirect tax solutions, as well as corporate finance, transfer pricing and…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22	Atoz Services	Exact match	LuxembourgHQ recorded Sep 22, 2026	n/a	234 contacts →
	Exact match “Our story begins in 2004 with the creation of the advisory firm ATOZ Tax Advisers.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23	Kpmg Acor TAX	Exact match	2900 Hellerup, DenmarkHQ recorded Sep 22, 2026	201-500	232 contacts →
	Exact match “KPMG ACOR TAX is a full-service tax consultancy firm.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24	Möhrle Happ Luther	Exact match	Hamburg, GermanyHQ recorded Sep 22, 2026	201-500	232 contacts →
	Exact match “MÖHRLE HAPP LUTHER is a multidisciplinary law firm in which auditors, tax advisors and attorneys work hand in hand.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25	DDTC	Exact match	Jakarta Utara, IndonesiaHQ recorded Sep 22, 2026	51-200	231 contacts →
	Exact match “DDTC is a research, technology, and knowledge-based tax institution and a centre of several business activities units, consultation services (DDTC Consulting), a center for review…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “tax advisory firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 41,271 tax advisory firms worldwide

See the full list, filter by size, metro and specialty, and access 96,691 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tax advisory firms worldwide at a glance

As of Sep 22, 2026

27.2%Verified-email coverage

8.6Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

26,357

11-50

12,015

51-200

1,915

201-500

274

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for tax advisory firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “tax advisory firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 96,691 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Tax advisory firms by location

150 lists · largest first

Every Tax advisory 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “tax advisory firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax advisory firms are there worldwide?

RevenueBase identified 41,271 company matches for tax advisory firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CA Firm tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most tax advisory firms?

The United States leads with 9,320 companies, followed by Germany (5,003) and Brazil (3,047). Every tax advisory firms list by country and city is linked on this page.

Which city has the most tax advisory firms?

Sao Paulo leads with 647 company records, followed by London (502) and Berlin (276).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 96,691 professional contacts with verified work emails tracked across these 41,271 companies; direct dials are available where recorded.

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 SmartSearch, 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.