Company lists · Data refreshed November 2026

Top 25 Business tax services worldwide

Name: Business tax services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 40,726 companies tracked

RevenueBase identified 40,726 company matches for business tax services worldwide as of November 2026 and tracks 318,707 professional contacts across them, including 81,736 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for business tax services 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 business tax services 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

40,726Companies

318,707Contacts tracked

81,736Verified emails

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The 25 largest business tax services worldwide

Ranked by team size

Top 25 of 40,726 company matches for business tax services 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	CA Firm	Exact match	Chennai, IndiaHQ recorded Nov 6, 2026	n/a	10,802 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 · Nov 6, 2026 · View company records in RevenueBase
3	RYAN	Exact match	Dallas, CT, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,580 contacts →
	Exact match “Ryan, an award-winning global tax services and software provider, is the largest Firm in the world dedicated exclusively to business taxes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	TAX Consultant	Exact match	Brighton, United KingdomHQ recorded Nov 6, 2026	n/a	2,211 contacts →
	Exact match “A traditional general practice, with a twist.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	PKF O'connor Davies	Exact match	Harrison, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,814 contacts →
	Exact match “PKF O’Connor Davies is a top-tier accounting, tax and advisory practice with a long history of serving domestic and international clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	The Bonadio Group	Exact match	Pittsford, DE, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,153 contacts →
	Exact match “Founded in 1978 and led by active and engaged problem solvers, The Bonadio Group (TBG) brings a unique passion and approach to our work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	WTS Deutschland	Exact match	Munich, GermanyHQ recorded Nov 6, 2026	1,001-5,000	905 contacts →
	Exact match “WTS ist ein globaler Full-Service Anbieter für Steuerberatungsleistungen und Financial & Deal Advisory.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Mauldin & Jenkins	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	762 contacts →
	Exact match “Mauldin & Jenkins, LLC believes that by working together with our clients, we can accomplish anything!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Chevez	Exact match	Mexico City, MexicoHQ recorded Nov 6, 2026	501-1,000	740 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	HBK Cpas & Consultants	Exact match	Canfield, NJ, United StatesHQ recorded Nov 6, 2026	501-1,000	676 contacts →
	Exact match “Established in 1949, HBK is a multidisciplinary financial services firm offering the collective intelligence of hundreds of professionals committed to delivering exceptional…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	KUMAR	Exact match	n/a	1,001-5,000	638 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Anchin	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	612 contacts →
	Exact match “Effective July 1, 2026, Anchin combined with Baker Tilly, a leading advisory, tax, and assurance firm with a national and global presence across major U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Registerkaro	Exact match	Bengaluru East, IndiaHQ recorded Nov 6, 2026	501-1,000	609 contacts →
	Exact match “Welcome to RegisterKaro.in!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Buzzacott	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	600 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 · Nov 6, 2026 · View company records in RevenueBase
15	Sensiba LLP	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	520 contacts →
	Exact match “Sensiba’s comprehensive accounting, tax, and consulting services help businesses and people solve problems, navigate complexity, and build a foundation for sustainable growth.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Brown Edwards	Exact match	Roanoke, VA, United StatesHQ recorded Nov 6, 2026	201-500	517 contacts →
	Exact match “Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Singerlewak LLP	Exact match	Los Angeles, CO, United StatesHQ recorded Nov 6, 2026	201-500	508 contacts →
	Exact match “SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Smith Howard	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	505 contacts →
	Exact match “Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	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
20	SAX	Exact match	Parsippany, NJ, United StatesHQ recorded Nov 6, 2026	201-500	462 contacts →
	Exact match “SAX is a multi-disciplinary accounting, tax and advisory firm serving the needs of privately held companies, family-owned businesses, not-for-profit organizations and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Affinia	Exact match	Colchester, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	459 contacts →
	Exact match “Accountants, Tax and Business Advisers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Apercen Partners LLC	Exact match	Palo Alto, CA, United StatesHQ recorded Nov 6, 2026	201-500	427 contacts →
	Exact match “Originating from the English and Latin roots of “apercu,” an act of insight, and “census,” an applied study of wealth and property, Apercen is a tax consulting firm offering high…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Gravita	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	412 contacts →
	Exact match “Welcome to the new era of accountancy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	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
25	Administratiekantoor Tidak B.V	Exact match	Alphen Aan Den Rijn, NetherlandsHQ recorded Nov 6, 2026	n/a	383 contacts →
	Exact match “Tidak in Alphen aan den Rijn is het administratiekantoor voor startende ondernemers, zzp'ers, mkb en particulieren.” 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 “business tax services”. 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 40,726 business tax services worldwide

See the full list, filter by size, metro and specialty, and access 81,736 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business tax services worldwide at a glance

As of Nov 6, 2026

25.6%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

28,165

11-50

9,966

51-200

1,324

201-500

170

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 business tax services are linked below.
What qualifies: Company records worldwide whose business descriptions match “business tax services” 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 81,736 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.

Business tax services by location

180 lists · largest first

Every Business tax services 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 “business tax services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many business tax services are there worldwide?

RevenueBase identified 40,726 company matches for business tax services 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 business tax services?

The United States leads with 13,659 companies, followed by Germany (3,192) and Brazil (2,582). Every business tax services list by country and city is linked on this page.

Which city has the most business tax services?

London leads with 475 company records, followed by Sao Paulo (440) and New York (316).

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 81,736 professional contacts with verified work emails tracked across these 40,726 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.