Company lists · Data refreshed November 2026

Top 25 Tax audit service providers worldwide

Name: Tax audit service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 19,867 companies tracked

RevenueBase identified 19,867 company matches for tax audit service providers worldwide as of November 2026 and tracks 180,552 professional contacts across them, including 33,753 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for tax audit service providers 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 November 6, 2026. Country and city lists for tax audit service providers 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 Nov 6, 2026 How this list was built

19,867Companies

180,552Contacts tracked

33,753Verified emails

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The 25 largest tax audit service providers worldwide

Ranked by team size

Top 25 of 19,867 company matches for tax audit service providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	H&r Block	Exact match	Kansas City, MO, United StatesHQ recorded Nov 6, 2026	10001+	64,430 contacts →
	Exact match “H&R Block’s purpose is simple: To provide help and inspire confidence in our clients and communities everywhere.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	BDO Brazil	Exact match	Sp, BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,994 contacts →
	Exact match “Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	PWC Hungary	Exact match	Budapest, HungaryHQ recorded Nov 6, 2026	501-1,000	780 contacts →
	Exact match “A PwC Magyarország közel három évtizede nyújt ügyfeleinek nemzetközi színvonalú szolgáltatást könyvvizsgálat, adótanácsadás és üzleti tanácsadás területeken.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Grupo Studio	Exact match	Porto Alegre, BrazilHQ recorded Nov 6, 2026	201-500	647 contacts →
	Exact match “A Studio Fiscal é uma rede de franquia especializada na prestação de serviços de auditoria fiscal e planejamento tributário.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	K C Mehta & CO LLP	Exact match	Vadodara, IndiaHQ recorded Nov 6, 2026	201-500	521 contacts →
	Exact match “K C Mehta & Co LLP (KCM) is a team of passionate professionals.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	DHPG	Exact match	Bonn, GermanyHQ recorded Nov 6, 2026	1,001-5,000	497 contacts →
	Exact match “As an interdisciplinary medium-sized tax audit, accountancy and legal advice service we guarantee all-round high-quality consultation combined with a personal component.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	H&r Block Australia	Exact match	Thornleigh, AustraliaHQ recorded Nov 6, 2026	501-1,000	463 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 · Nov 6, 2026 · View company records in RevenueBase
8	Etax Accountants	Exact match	Upper Mount Gravatt, AustraliaHQ recorded Nov 6, 2026	501-1,000	401 contacts →
	Exact match “Etax is a big team working on one big promise: To make tax easy for Australians.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	VLH	Exact match	Neustadt An Der Weinstrasse, GermanyHQ recorded Nov 6, 2026	1,001-5,000	389 contacts →
	Exact match “Deutschlands Nr.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Cohesive	Exact match	Exton, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	386 contacts →
	Exact match “Cohesive is a leading solutions provider and systems integrator for IBM Maximo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Advantage ONE TAX Consulting	Exact match	Sterling, VA, United StatesHQ recorded Nov 6, 2026	201-500	360 contacts →
	Exact match “Advantage One Tax Consulting is a multi-disciplinary group of highly experienced tax professionals who understand the tax practice in its true spirit, examine the issues it faces…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Squire	Exact match	Orem, UT, United StatesHQ recorded Nov 6, 2026	201-500	337 contacts →
	Exact match “Squire is a nationally recognized audit, tax, and business advisory firm serving clients across the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Felix Advisory Private Limited	Exact match	Gurgaon, IndiaHQ recorded Nov 6, 2026	201-500	320 contacts →
	Exact match “Felix Advisory is one of the leading providers of tax & regulatory services, risk, transaction, financial & business advisory, internal audit, and corporate governance services in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Oremus Corporate Services	Exact match	Hyderabad, IN, IndiaHQ recorded Nov 6, 2026	201-500	303 contacts →
	Exact match “At Oremus Corporate Services, we specialize in delivering top-notch Accounting and Bookkeeping, Secretarial Compliance, Payroll, Tax, HR, and Business Advisory Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	TPA Austria	Exact match	Vienna, AustriaHQ recorded Nov 6, 2026	1,001-5,000	272 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 · Nov 6, 2026 · View company records in RevenueBase
16	FBC Farm And Small Business TAX Consultants	Exact match	Calgary, ON, CanadaHQ recorded Nov 6, 2026	201-500	270 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 · Nov 6, 2026 · View company records in RevenueBase
17	Mayatax	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	251 contacts →
	Exact match “Growth exposes financial weakness.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	KE Andrews	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	201-500	234 contacts →
	Exact match “In operation since 1978, KE Andrews is one of the largest state and local tax firms in the country, managing over $500 billion in assets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Dewan P N Chopra & CO	Exact match	Delhi Ncr, IndiaHQ recorded Nov 6, 2026	201-500	210 contacts →
	Exact match “Dewan P N Chopra & Co is a reputed Chartered Accountants firm in India, actively engaged in a full service, multi-disciplinary practice under six core service verticals – Direct…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Contec Contabilidade	Exact match	Sumaré, BrazilHQ recorded Nov 6, 2026	n/a	202 contacts →
	Exact match “Desde 1971 a Contec é responsavel pela assessoria contabil e tributaria de diversas empresas da região metropolitana de Campinas e demais cidades vizinhas, construindo ao longo do…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Legacy Professionals LLP	Exact match	Westchester, MN, United StatesHQ recorded Nov 6, 2026	51-200	189 contacts →
	Exact match “Legacy Professionals LLP, headquartered in Westchester, IL, with offices in Schererville, IN, and Edina, MN, is a Certified Public Accounting firm serving clients nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	PKF Durban	Exact match	Umhlanga, South AfricaHQ recorded Nov 6, 2026	201-500	189 contacts →
	Exact match “Auditing, Accounting and Taxation It’s been 100 years since David Strachan strode from the pavement of Smith Street into William Cotta Building at number 331, and put up his…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	O.P. Bagla & Co. LLP	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	51-200	188 contacts →
	Exact match “O.P.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Ecovis Malaysia	Exact match	Kuala Lumpur, MalaysiaHQ recorded Nov 6, 2026	51-200	183 contacts →
	Exact match “ECOVIS is a leading global consulting firm with its origins in Continental Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	TPA Group	Exact match	Vienna, United StatesHQ recorded Nov 6, 2026	1,001-5,000	178 contacts →
	Exact match “The TPA Group is one of the leading tax advisory and auditing services companies in Central and South Eastern Europe- Workforce: more than 1.700 staff - Offices: 30 - Countries…” Recorded in the RevenueBase company graph · Nov 6, 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 audit service providers”. 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 19,867 tax audit service providers worldwide

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Tax audit service providers worldwide at a glance

As of Nov 6, 2026

18.7%Verified-email coverage

9.1Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

13,377

11-50

5,042

51-200

726

201-500

115

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 audit service providers are linked below.
What qualifies: Company records worldwide whose business descriptions match “tax audit service providers” 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 33,753 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 November 6, 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 audit service providers by location

89 lists · largest first

Every Tax audit service providers 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 audit service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax audit service providers are there worldwide?

RevenueBase identified 19,867 company matches for tax audit service providers worldwide as of November 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?

H&r Block tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most tax audit service providers?

The United States leads with 7,184 companies, followed by Germany (1,716) and India (1,475). Every tax audit service providers list by country and city is linked on this page.

Which city has the most tax audit service providers?

New York leads with 176 company records, followed by Sao Paulo (165) and Dubai (162).

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 33,753 professional contacts with verified work emails tracked across these 19,867 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 November 6, 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.