Company lists · Data refreshed September 2026

Top 25 Tax filing services worldwide

Name: Tax filing services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 40,090 companies tracked

RevenueBase identified 40,090 tax filing services worldwide as of September 2026 and tracks 284,815 professional contacts across them, including 70,644 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers tax filing services 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 22, 2026. Country and city lists for tax filing services 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 22, 2026 86% judged on-target in blind review

40,090Companies

284,815Contacts tracked

70,644Verified emails

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The 25 largest tax filing services worldwide

Ranked by team size

Top 25 of 40,090 tax filing services worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to tax filing services: 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	H&r Block Canada	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	5,001-10,000	889 contacts →
	Partial evidence “We’re Canada’s leading tax preparation firm for over 60 years – delivering value to Canadians by our expertise and knowledge in handling all tax situations and by our commitment…” Source: RevenueBase Database · checked Sep 22, 2026
2	KUMAR	Indirect evidence	United StatesHQ checked Sep 22, 2026	1,001-5,000	627 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
3	Bennett Thrasher	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 22, 2026	201-500	558 contacts →
	Partial evidence “Bennett Thrasher provides proven guidance for financial confidence through premier tax, audit, advisory, and outsourcing solutions.” Source: RevenueBase Database · checked Sep 22, 2026
4	H&r Block Australia	Partial evidence	Thornleigh, AustraliaHQ checked Sep 22, 2026	501-1,000	412 contacts →
	Partial evidence “As Australia’s largest preparer of personal income tax returns, with over 400 offices across Australia, expert help is never far away.” Source: RevenueBase Database · checked Sep 22, 2026
5	Administratiekantoor Tidak B.V	Indirect evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 22, 2026	n/a	377 contacts →
	Indirect evidence “Tidak in Alphen aan den Rijn is het administratiekantoor voor startende ondernemers, zzp'ers, mkb en particulieren.” Source: RevenueBase Database · checked Sep 22, 2026
6	BDO Czech Republic	Indirect evidence	Prague, Czech RepublicHQ checked Sep 22, 2026	501-1,000	282 contacts →
	Indirect evidence “Jsme poradenská společnost poskytující auditorské, daňové, právní, účetní a poradenské služby.” Source: RevenueBase Database · checked Sep 22, 2026
7	Taxprime	Partial evidence	Jakarta Selatan, IndonesiaHQ checked Sep 22, 2026	201-500	269 contacts →
	Partial evidence “TaxPrime is a Tax Consulting Firm, based in Jakarta, the Capital City of Indonesia.” Source: RevenueBase Database · checked Sep 22, 2026
8	FBC Farm And Small Business TAX Consultants	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	201-500	260 contacts →
	Indirect evidence “For more than 70 years, our focus has always been to bring financial peace of mind to our Canadian business owners.” Source: RevenueBase Database · checked Sep 22, 2026
9	Tax2win	Partial evidence	Jaipur, IndiaHQ checked Sep 22, 2026	201-500	243 contacts →
	Partial evidence “Indian tax laws are a maze of deadlines, exemptions and penalties, making it difficult for the taxpayer to file their ITR.” Source: RevenueBase Database · checked Sep 22, 2026
10	Capeos	Indirect evidence	Rennes, FranceHQ checked Sep 22, 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 22, 2026
11	MBE Cpas	Partial evidence	Baraboo, WI, United StatesHQ checked Sep 22, 2026	51-200	201 contacts →
	Partial evidence “We are driven by more than a quality tax return, we provide effective solutions to help you, your family, and your business succeed.” Source: RevenueBase Database · checked Sep 22, 2026
12	ADS Allgemeine Deutsche Steuerberatungsgesellschaft MBH	Indirect evidence	Hamburg, GermanyHQ checked Sep 22, 2026	501-1,000	198 contacts →
	Indirect evidence “Die ADS Steuer.Beratung ist Ihr spezialisierter Partner für ganzheitliche Steuerberatung – exklusiv für Unternehmen.” Source: RevenueBase Database · checked Sep 22, 2026
13	Fiduciaire	Indirect evidence	Beaufays, BelgiumHQ checked Sep 22, 2026	n/a	198 contacts →
	Indirect evidence “Bonjour et bienvenue sur la page entreprise de la Fiduciaire au Carré - Une équipe dynamique à votre service- Assistance efficace et conseils individualisés tant aux personnes…” Source: RevenueBase Database · checked Sep 22, 2026
14	RSM Poland	Indirect evidence	Poznań, PolandHQ checked Sep 22, 2026	201-500	193 contacts →
	Indirect evidence “RSM Poland to więcej niż biuro rachunkowe, kancelaria doradztwa podatkowego i firma audytorska – to przede wszystkim profesjonalni doradcy i zaufani partnerzy w biznesie.” Source: RevenueBase Database · checked Sep 22, 2026
15	JCA Contadores	Indirect evidence	Niterói, BrazilHQ checked Sep 22, 2026	51-200	193 contacts →
	Indirect evidence “Excelência em consultoria.” Source: RevenueBase Database · checked Sep 22, 2026
16	Hutchinson And Bloodgood LLP	Partial evidence	Glendale, CA, United StatesHQ checked Sep 22, 2026	51-200	187 contacts →
	Partial evidence “Hutchinson and Bloodgood LLP is a leading firm of Certified Public Accountants and Consultants providing Tax Planning, Auditing, Technology Consulting, Human Resources and…” Source: RevenueBase Database · checked Sep 22, 2026
17	Oficina Contable HTO	Indirect evidence	Viña Del Mar, ChileHQ checked Sep 22, 2026	n/a	186 contacts →
	Indirect evidence “Oficina contable que se caracteriza por el profesionalismo de sus integrantes, la rápida solución a los problemas que se presenten y la atención que presta a sus clientes.” Source: RevenueBase Database · checked Sep 22, 2026
18	Contec Contabilidade	Indirect evidence	Sumaré, BrazilHQ checked Sep 22, 2026	n/a	185 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
19	Assessor-Bordin Consultores Empresariais SS	Partial evidence	São Paulo, BrazilHQ checked Sep 22, 2026	51-200	177 contacts →
	Partial evidence “ABordin has provided high-quality services in the following areas, for the past 37 years: Business Process Outsourcing, Audit and Tax Consulting, Individual Income Tax…” Source: RevenueBase Database · checked Sep 22, 2026
20	BVA	Indirect evidence	Sainte-marie, QC, CanadaHQ checked Sep 22, 2026	201-500	170 contacts →
	Indirect evidence “Depuis maintenant plus de 60 ans, BVA a développé une panoplie de services axés sur les préoccupations des entrepreneurs, des professionnels et des dirigeants d’entreprises.” Source: RevenueBase Database · checked Sep 22, 2026
21	GKK Partners	Indirect evidence	Munich, GermanyHQ checked Sep 22, 2026	201-500	170 contacts →
	Indirect evidence “GKK PARTNERS ist eine expandierende Wirtschaftsprüfungs- und Steuerberatungsgesellschaft mit Sitz in München.” Source: RevenueBase Database · checked Sep 22, 2026
22	Zeifmans	Partial evidence	Toronto, ON, CanadaHQ checked Sep 22, 2026	51-200	168 contacts →
	Partial evidence “Zeifmans is a full-service tax, accounting and consulting firm based in Toronto, Canada.” Source: RevenueBase Database · checked Sep 22, 2026
23	Fradema Consultores	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 22, 2026	201-500	159 contacts →
	Indirect evidence “Com atuação desde 1988, a Fradema Consultores Tributários possui forte atuação no contexto judicial e administrativo nas esferas federal, estadual e municipal, com sedes em todo o…” Source: RevenueBase Database · checked Sep 22, 2026
24	Ecovis Malaysia	Indirect evidence	Kuala Lumpur, MalaysiaHQ checked Sep 22, 2026	51-200	155 contacts →
	Indirect evidence “ECOVIS is a leading global consulting firm with its origins in Continental Europe.” Source: RevenueBase Database · checked Sep 22, 2026
25	Ormerod Rutter Chartered Accountants	Partial evidence	Droitwich, United KingdomHQ checked Sep 22, 2026	51-200	151 contacts →
	Partial evidence “For 40 years, Ormerod Rutter have offered the specialist hands-on support that clients need to handle all of their tax, business and financial affairs.” Source: RevenueBase Database · checked Sep 22, 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 filing services. 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 filing services.
Partial evidence: Its own public description names part of tax filing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name tax filing services. 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 40,090 tax filing services worldwide

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Tax filing services worldwide at a glance

As of Sep 22, 2026

24.8%Verified-email coverage

7.1Average contacts per company

1-10Median size (employees)

1.1%Largest-city concentration · Sao Paulo

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

28,081

11-50

9,857

51-200

1,384

201-500

172

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among tax filing services, 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: Every country. Country and city lists for tax filing services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “tax filing services”. 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 filing services), 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 filing services, 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, 70,644 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 22, 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 filing services by location

156 lists · largest first

Every Tax filing 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 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 filing services, 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 filing services are there worldwide?

RevenueBase identified 40,090 tax filing services 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?

H&r Block Canada, headquartered in Calgary, tops this list with the largest team on record.

Which country has the most tax filing services?

The United States leads with 15,286 companies, followed by Germany (3,581) and Brazil (2,427). Every tax filing services list by country and city is linked on this page.

Which city has the most tax filing services?

Sao Paulo leads with 428 headquartered companies, followed by New York (327) and London (309).

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 70,644 verified decision-maker contacts tracked across these 40,090 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 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 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.