Company lists · Data refreshed September 2026

Top 25 Expat tax law firms worldwide

Name: Expat tax law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 14,054 companies tracked

RevenueBase identified 14,054 expat tax law firms worldwide as of September 2026 and tracks 137,111 professional contacts across them, including 37,701 with verified work emails. Germany is the largest market and Sao Paulo the largest hub.

This list covers expat tax law firms 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 28, 2026. Country and city lists for expat tax law firms 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 28, 2026 86% judged on-target in blind review

14,054Companies

137,111Contacts tracked

37,701Verified emails

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The 25 largest expat tax law firms worldwide

Ranked by team size

Top 25 of 14,054 expat tax law firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to expat tax law firms: 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	LAW Firm	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	6,284 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
2	Vialto	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	5,587 contacts →
	Indirect evidence “Vialto is focused on transforming the global mobility ecosystem to support multinational organizations and their employees.” Source: RevenueBase Database · checked Sep 28, 2026
3	King & Wood Mallesons	Indirect evidence	Hong KongHQ checked Sep 28, 2026	1,001-5,000	3,591 contacts →
	Indirect evidence “A firm born in Asia, underpinned by world class capability.” Source: RevenueBase Database · checked Sep 28, 2026
4	Garrigues	Strong evidence	Madrid, SpainHQ checked Sep 28, 2026	1,001-5,000	2,853 contacts →
	Strong evidence “Garrigues is an international legal and tax services firm that advises clients locally, regionally and globally from every angle of business law.” Source: RevenueBase Database · checked Sep 28, 2026
5	TAX Consultant	Indirect evidence	Brighton, United KingdomHQ checked Sep 28, 2026	n/a	2,042 contacts →
	Indirect evidence “A traditional general practice, with a twist.” Source: RevenueBase Database · checked Sep 28, 2026
6	Loyens & Loeff	Strong evidence	Amsterdam, NetherlandsHQ checked Sep 28, 2026	1,001-5,000	1,548 contacts →
	Strong evidence “As a leading Law & Tax firm, Loyens & Loeff is the logical choice for a legal and tax partner if you do business in or from the Netherlands, Belgium, Luxembourg and Switzerland…” Source: RevenueBase Database · checked Sep 28, 2026
7	Mishcon DE Reya LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,376 contacts →
	Indirect evidence “Based in London, Mishcon de Reya services an international community of clients and provides advice in situations where the constraints of geography often do not apply.” Source: RevenueBase Database · checked Sep 28, 2026
8	OGIER	Indirect evidence	St Helier, JerseyHQ checked Sep 28, 2026	1,001-5,000	1,169 contacts →
	Indirect evidence “Ogier is an international professional services firm with the knowledge and expertise to handle the most demanding and complex transactions and provide expert, efficient and cost…” Source: RevenueBase Database · checked Sep 28, 2026
9	DE Jong & Laan	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 28, 2026	1,001-5,000	869 contacts →
	Indirect evidence “If you are planning to do business in the Netherlands, you need the support of a good advisor.” Source: RevenueBase Database · checked Sep 28, 2026
10	Mourant	Indirect evidence	St Helier, JerseyHQ checked Sep 28, 2026	501-1,000	801 contacts →
	Indirect evidence “Mourant is an international professional services firm combining legal excellence, specialist entity management, governance, regulatory and consulting services.” Source: RevenueBase Database · checked Sep 28, 2026
11	EY Société D'avocats	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	501-1,000	735 contacts →
	Indirect evidence “EY Société d’avocats se mobilise pour concrétiser les potentiels: c’est ainsi que nous faisons la différence pour nos clients, nos équipes et tous nos interlocuteurs.” Source: RevenueBase Database · checked Sep 28, 2026
12	Nautadutilh	Strong evidence	Amsterdam, NetherlandsHQ checked Sep 28, 2026	501-1,000	725 contacts →
	Strong evidence “NautaDutilh is one of the largest international law firms in the Benelux with some 400 lawyers, civil law notaries and tax advisers at offices in Amsterdam, Brussels, London…” Source: RevenueBase Database · checked Sep 28, 2026
13	AKD	Strong evidence	Amsterdam, NetherlandsHQ checked Sep 28, 2026	501-1,000	692 contacts →
	Strong evidence “AKD is a leading international law firm, with over 600 lawyers, tax advisers, civil-law notaries and supporting professionals advising on Dutch, Belgian and Luxembourg legal and…” Source: RevenueBase Database · checked Sep 28, 2026
14	Deloitte Société D'avocats	Strong evidence	Paris La Défense, FranceHQ checked Sep 28, 2026	501-1,000	690 contacts →
	Strong evidence “Deloitte Société d'Avocats is one of the leading French law firms, specializing in international tax and legal strategies.” Source: RevenueBase Database · checked Sep 28, 2026
15	Chevez Ruiz Zamarripa	Indirect evidence	Ciudad De Mexico, MexicoHQ checked Sep 28, 2026	501-1,000	683 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
16	Kpmg Avocats	Indirect evidence	Courbevoie, FranceHQ checked Sep 28, 2026	501-1,000	669 contacts →
	Indirect evidence “Les entreprises de toutes tailles sont exposées à des dispositions de plus en plus complexes en matière de réglementations fiscales et juridiques sur leur territoire national et…” Source: RevenueBase Database · checked Sep 28, 2026
17	Walker Morris LLP	Partial evidence	Leeds, United KingdomHQ checked Sep 28, 2026	201-500	582 contacts →
	Partial evidence “Welcome to Walker Morris - a UK-headquartered law firm with international reach.” Source: RevenueBase Database · checked Sep 28, 2026
18	Lavery	Partial evidence	Montréal, QC, CanadaHQ checked Sep 28, 2026	201-500	546 contacts →
	Partial evidence “Over a century of legal advice to domestic and international organizations has made Lavery Lawyers the leading independent law firm in Quebec (Canadian Lawyer).” Source: RevenueBase Database · checked Sep 28, 2026
19	Advant Nctm	Indirect evidence	Milano, ItalyHQ checked Sep 28, 2026	201-500	514 contacts →
	Indirect evidence “Fondato nel ADVANT Nctm è uno studio legale indipendente con oltre 360 avvocati e dottori commercialisti, uno dei principali in Italia.” Source: RevenueBase Database · checked Sep 28, 2026
20	William FRY LLP	Strong evidence	Dublin, IrelandHQ checked Sep 28, 2026	201-500	507 contacts →
	Strong evidence “As one of Ireland's largest law firms, William Fry LLP offers unrivalled legal and tax expertise across the full breadth of the business sector.” Source: RevenueBase Database · checked Sep 28, 2026
21	DHPG	Partial evidence	Bonn, GermanyHQ checked Sep 28, 2026	1,001-5,000	460 contacts →
	Partial evidence “As an interdisciplinary medium-sized tax audit, accountancy and legal advice service we guarantee all-round high-quality consultation combined with a personal component.” Source: RevenueBase Database · checked Sep 28, 2026
22	Visser & Visser	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 28, 2026	201-500	408 contacts →
	Indirect evidence “Visser & Visser has a team of in-house specialists who understand the ins and outs of international business and can help you with everything from taking your first steps in the…” Source: RevenueBase Database · checked Sep 28, 2026
23	Apercen Partners LLC	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 28, 2026	201-500	399 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
24	Guyer & Regules	Partial evidence	Montevideo, UruguayHQ checked Sep 28, 2026	201-500	337 contacts →
	Partial evidence “Guyer & Regules is proud to be considered as Uruguay’s first choice for international and domestic complex legal, accounting and tax work.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ecovis Deutschland	Indirect evidence	Berlin, GermanyHQ checked Sep 28, 2026	1,001-5,000	319 contacts →
	Indirect evidence “Wir bei Ecovis sind Steuerberater, Wirtschaftsprüfer, Rechtsanwälte und Unternehmensberater.” Source: RevenueBase Database · checked Sep 28, 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: expat tax law firms. 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 expat tax law firms.
Partial evidence: Its own public description names part of expat tax law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name expat tax law firms. 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 14,054 expat tax law firms worldwide

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Expat tax law firms worldwide at a glance

As of Sep 28, 2026

27.5%Verified-email coverage

9.8Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

8,563

11-50

4,448

51-200

705

201-500

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 expat tax law firms, 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 expat tax law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “expat tax law firms”. 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 expat tax law firms), 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 expat tax law firms, 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, 37,701 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 28, 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.

Expat tax law firms by location

73 lists · largest first

Every Expat tax law firms 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 expat tax law firms, 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 expat tax law firms are there worldwide?

RevenueBase identified 14,054 expat tax law firms 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?

LAW Firm, headquartered in London, tops this list with the largest team on record.

Which country has the most expat tax law firms?

Germany leads with 2,358 companies, followed by the United States (1,496) and Brazil (1,312). Every expat tax law firms list by country and city is linked on this page.

Which city has the most expat tax law firms?

Sao Paulo leads with 369 headquartered companies, followed by Madrid (228) and Paris (195).

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 37,701 verified decision-maker contacts tracked across these 14,054 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 28, 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.