Company lists · Data refreshed November 2026

Top 25 Cross-border tax advisors worldwide

Name: Cross-border tax advisors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 30,982 companies tracked

RevenueBase identified 30,982 company matches for cross-border tax advisors worldwide as of November 2026 and tracks 479,442 professional contacts across them, including 141,190 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for cross-border tax advisors 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 cross-border tax advisors 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

30,982Companies

479,442Contacts tracked

141,190Verified emails

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

The 25 largest cross-border tax advisors worldwide

Ranked by team size

Top 25 of 30,982 company matches for cross-border tax advisors 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	Kpmg UK	Exact match	London, United KingdomHQ recorded Nov 6, 2026	10001+	14,853 contacts →
	Exact match “Make growth happen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	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
4	CLA Cliftonlarsonallen	Exact match	Othello, WA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	9,936 contacts →
	Exact match “CLA exists to create opportunities for our clients, our people, and our communities through industry-focused wealth advisory, outsourcing, audit, tax, and consulting services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	MNP	Exact match	Calgary, AB, CanadaHQ recorded Nov 6, 2026	5,001-10,000	9,206 contacts →
	Exact match “MNP is a leading national accounting, tax and business consulting firm in Canada.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	BDO UK	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	7,139 contacts →
	Exact match “BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	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
8	Mazars	Exact match	Paris La Defense, FranceHQ recorded Nov 6, 2026	10001+	6,455 contacts →
	Exact match “Mazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Vialto	Exact match	London, United KingdomHQ recorded Nov 6, 2026	5,001-10,000	5,734 contacts →
	Exact match “Vialto is focused on transforming the global mobility ecosystem to support multinational organizations and their employees.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	PWC Luxembourg	Exact match	LuxembourgHQ recorded Nov 6, 2026	1,001-5,000	3,425 contacts →
	Exact match “PwC Luxembourg is the largest professional services firm in Luxembourg with over 3,600 people employed from 90 different countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	APRIO	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,336 contacts →
	Exact match “Aprio is redefining what it means to be a global advisory and accounting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Kpmg Ireland	Exact match	Dublin 2, IrelandHQ recorded Nov 6, 2026	1,001-5,000	2,988 contacts →
	Exact match “KPMG is a leading provider of professional services, offering a range of audit, tax and advisory services to a broad range of domestic and international clients across all sectors…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Garrigues	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	2,981 contacts →
	Exact match “Garrigues is an international legal and tax services firm that advises clients locally, regionally and globally from every angle of business law.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	PWC Sweden	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	1,001-5,000	2,312 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 · Nov 6, 2026 · View company records in RevenueBase
15	S&w	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	2,311 contacts →
	Exact match “As a fast growing UK accounting and advisory firm, we’ve been there, as a trusted partner, helping businesses and individuals meet challenges and seize opportunities across…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	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
17	BDO South Africa	Exact match	Johannesburg, South AfricaHQ recorded Nov 6, 2026	1,001-5,000	1,906 contacts →
	Exact match “Audit \| Advisory \| Tax The South African member firm of BDO International - The Leader for Exceptional Client Service since 1963 BDO clients experience a distinctive level of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	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
19	BDO Germany	Exact match	Hamburg, GermanyHQ recorded Nov 6, 2026	1,001-5,000	1,665 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 · Nov 6, 2026 · View company records in RevenueBase
20	Kpmg Argentina	Exact match	Caba, IndiaHQ recorded Nov 6, 2026	1,001-5,000	1,645 contacts →
	Exact match “KPMG Argentina es una firma que provee servicios profesionales de Auditoría, Impuestos y Legales, Asesoría.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Rehmann	Exact match	Troy, OH, United StatesHQ recorded Nov 6, 2026	501-1,000	1,409 contacts →
	Exact match “Rehmann is a professional advisory firm that provides accounting and assurance, business solutions and outsourcing, specialized consulting, and wealth management services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Grant Thornton Greece	Exact match	Athens, GreeceHQ recorded Nov 6, 2026	1,001-5,000	1,371 contacts →
	Exact match “Grant Thornton SA provides personalised assurance, tax and advisory services to listed entities, privately-held businesses and public sector businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	AAB	Exact match	Uk And Ireland, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,267 contacts →
	Exact match “We provide services that help businesses at every stage of the lifecycle.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Moore Kingston Smith	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	1,215 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 · Nov 6, 2026 · View company records in RevenueBase
25	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

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 “cross-border tax advisors”. 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 30,982 cross-border tax advisors worldwide

See the full list, filter by size, metro and specialty, and access 141,190 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Cross-border tax advisors worldwide at a glance

As of Nov 6, 2026

29.4%Verified-email coverage

15.5Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

18,289

11-50

9,581

51-200

1,815

201-500

328

501-1,000

110

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 cross-border tax advisors are linked below.
What qualifies: Company records worldwide whose business descriptions match “cross-border tax advisors” 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 141,190 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.

Cross-border tax advisors by location

159 lists · largest first

Every Cross-border tax advisors 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 “cross-border tax advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cross-border tax advisors are there worldwide?

RevenueBase identified 30,982 company matches for cross-border tax advisors 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 cross-border tax advisors?

The United States leads with 6,314 companies, followed by Germany (4,091) and Brazil (2,562). Every cross-border tax advisors list by country and city is linked on this page.

Which city has the most cross-border tax advisors?

Sao Paulo leads with 566 company records, followed by London (391) and Berlin (240).

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 141,190 professional contacts with verified work emails tracked across these 30,982 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.

Ready to reach these companies? Verified emails and direct dials for all 30,982 cross-border tax advisors 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.