Company lists · Data refreshed October 2026

Top 25 Tax preparation and compliance services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 44,700 companies tracked

RevenueBase identified 44,700 company matches for tax preparation and compliance services worldwide as of October 2026 and tracks 390,482 professional contacts across them, including 107,346 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for tax preparation and compliance 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 October 22, 2026. Country and city lists for tax preparation and compliance 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 Oct 22, 2026 How this list was built

44,700Companies

390,482Contacts tracked

107,346Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest tax preparation and compliance services worldwide

Ranked by team size

Top 25 of 44,700 company matches for tax preparation and compliance services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 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	H&r Block	Exact match	Kansas City, MO, United StatesHQ recorded Oct 22, 2026	10001+	60,358 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 · Oct 22, 2026 · View company records in RevenueBase
2	CA Firm	Exact match	Chennai, IndiaHQ recorded Oct 22, 2026	n/a	10,384 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 · Oct 22, 2026 · View company records in RevenueBase
3	RYAN	Exact match	Dallas, TX, United StatesHQ recorded Oct 22, 2026	5,001-10,000	6,427 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 · Oct 22, 2026 · View company records in RevenueBase
4	Eide Bailly LLP	Exact match	United StatesHQ recorded Oct 22, 2026	1,001-5,000	2,399 contacts →
	Exact match “We’re Eide Bailly (I’d bay-lee), a business advisory, accounting and technology firm built with our clients in mind.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	PWC Sweden	Exact match	Stockholm, SwedenHQ recorded Oct 22, 2026	1,001-5,000	2,262 contacts →
	Exact match “På PwC hjälper vi våra kunder att bygga förtroende och ställa om sin verksamhet för att öka konkurrenskraften.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6	Carr, Riggs & Ingram	Exact match	Enterprise, AL, United StatesHQ recorded Oct 22, 2026	1,001-5,000	2,146 contacts →
	Exact match “Carr, Riggs & Ingram (CRI) is a Top 25 nationally-ranked accounting and advisory firm driven by relationships to cultivate growth.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7	TAX Consultant	Exact match	Brighton, United KingdomHQ recorded Oct 22, 2026	n/a	2,050 contacts →
	Exact match “A traditional general practice, with a twist.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	PKF O'connor Davies	Exact match	Harrison, NY, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,784 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 · Oct 22, 2026 · View company records in RevenueBase
9	BDO In Indonesia	Exact match	Jakarta, IndonesiaHQ recorded Oct 22, 2026	501-1,000	1,725 contacts →
	Exact match “BDO is the leading provider of professional services within the mid-tier of our profession.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	Wolters Kluwer TAX & Accounting US	Exact match	New York, NY, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,648 contacts →
	Exact match “Wolters Kluwer Tax & Accounting U.S.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Grant Thornton Sweden	Exact match	Stockholm, SwedenHQ recorded Oct 22, 2026	1,001-5,000	1,608 contacts →
	Exact match “Grant Thornton är ett ledande revisions- och rådgivningsföretag med över 1400 medarbetare som erbjuder tjänster inom revision, skatt, redovisning och specialistrådgivning.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12	RSM Ebner Stolz	Exact match	Stuttgart, GermanyHQ recorded Oct 22, 2026	1,001-5,000	1,521 contacts →
	Exact match “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	Block Advisors	Exact match	Kansas City, MO, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,383 contacts →
	Exact match “We are Block Advisors by H&R Block.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	AAB	Exact match	Uk And Ireland, United KingdomHQ recorded Oct 22, 2026	1,001-5,000	1,205 contacts →
	Exact match “We provide services that help businesses at every stage of the lifecycle.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	Moore Kingston Smith	Exact match	London, United KingdomHQ recorded Oct 22, 2026	501-1,000	1,197 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 · Oct 22, 2026 · View company records in RevenueBase
16	Berrydunn Assurance, TAX And Consulting	Exact match	Portland, ME, United StatesHQ recorded Oct 22, 2026	501-1,000	1,051 contacts →
	Exact match “BerryDunn is the brand name under which Berry, Dunn, McNeil & Parker, LLC and BDMP Assurance, LLP, independently owned entities, provide services.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	HCVT	Exact match	Los Angeles, CA, United StatesHQ recorded Oct 22, 2026	501-1,000	928 contacts →
	Exact match “HCVT is Southern California’s leading public accounting firm, the largest headquartered in Los Angeles, and the third-largest in the Western U.S.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	PKF Hadiwinata	Exact match	Jakarta Pusat, IndonesiaHQ recorded Oct 22, 2026	501-1,000	882 contacts →
	Exact match “PKF Hadiwinata is a top 10 accounting & professional services firm in Indonesia, headquartered in the heart of the financial district of Jakarta, and is a member of PKF…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19	WTS Deutschland	Exact match	Munich, GermanyHQ recorded Oct 22, 2026	1,001-5,000	871 contacts →
	Exact match “WTS ist ein globaler Full-Service Anbieter für Steuerberatungsleistungen und Financial & Deal Advisory.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	KSM Katz, Sapper & Miller	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 22, 2026	501-1,000	835 contacts →
	Exact match “KSM (Katz, Sapper & Miller) is a nationally recognized advisory, tax, and audit firm.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	PWC Hungary	Exact match	Budapest, HungaryHQ recorded Oct 22, 2026	501-1,000	753 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 · Oct 22, 2026 · View company records in RevenueBase
22	Mauldin & Jenkins	Exact match	Atlanta, GA, United StatesHQ recorded Oct 22, 2026	501-1,000	742 contacts →
	Exact match “Mauldin & Jenkins, LLC believes that by working together with our clients, we can accomplish anything!” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23	Pkf-Francis Clark Chartered Accountants & Business Advisers	Exact match	Exeter, United KingdomHQ recorded Oct 22, 2026	501-1,000	735 contacts →
	Exact match “Any good accountancy firm can help with your finance, audit, and tax.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24	KMK	Exact match	Ahmedabad, IndiaHQ recorded Oct 22, 2026	1,001-5,000	726 contacts →
	Exact match “KMK Ventures is a leading Outsourced Accounting & Tax solutions company providing services to clients based out of USA.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25	Blick Rothenberg	Exact match	Covent Garden, United KingdomHQ recorded Oct 22, 2026	501-1,000	722 contacts →
	Exact match “Blick Rothenberg is a leading tax, accounting and business advisory firm founded on personal integrity and technical expertise.” Recorded in the RevenueBase company graph · Oct 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 preparation and compliance 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 44,700 tax preparation and compliance services worldwide

See the full list, filter by size, metro and specialty, and access 107,346 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Tax preparation and compliance services worldwide at a glance

As of Oct 22, 2026

27.5%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

29,557

11-50

12,309

51-200

1,925

201-500

282

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 preparation and compliance services are linked below.
What qualifies: Company records worldwide whose business descriptions match “tax preparation and compliance 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 107,346 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 October 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 preparation and compliance services by location

198 lists · largest first

Every Tax preparation and compliance 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 “tax preparation and compliance services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax preparation and compliance services are there worldwide?

RevenueBase identified 44,700 company matches for tax preparation and compliance services worldwide as of October 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 preparation and compliance services?

The United States leads with 14,964 companies, followed by Germany (3,810) and Brazil (3,242). Every tax preparation and compliance services list by country and city is linked on this page.

Which city has the most tax preparation and compliance services?

Sao Paulo leads with 598 company records, followed by London (356) and New York (341).

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 107,346 professional contacts with verified work emails tracked across these 44,700 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 October 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 44,700 tax preparation and compliance services worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.