Company lists · Data refreshed November 2026

Top 25 Private client international tax advisors worldwide

RevenueBase identified 21,205 company matches for private client international tax advisors worldwide as of November 2026 and tracks 190,461 professional contacts across them, including 68,501 with verified work emails. Germany is the largest market and London the largest hub.

This list covers company matches for private client international 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 private client international 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
21,205Companies
190,461Contacts tracked
68,501Verified emails
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The 25 largest private client international tax advisors worldwide

Ranked by team size
Top 25 of 21,205 company matches for private client international 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchVictoria Road, United KingdomHQ recorded Nov 6, 2026n/a1,500 contacts →

Exact match

“ILS World is a global provider of independent fiduciary services to professional advisers, international corporate groups and private clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchParis La Défense, FranceHQ recorded Nov 6, 2026501-1,000728 contacts →

Exact match

“Deloitte Société d'Avocats is one of the leading French law firms, specializing in international tax and legal strategies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBonn, GermanyHQ recorded Nov 6, 2026501-1,000687 contacts →

Exact match

“Flick Gocke Schaumburg is an independent partnership of lawyers, tax advisors and auditors working with more than 320 professionals from offices in Berlin, Bonn, Düsseldorf…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchn/a1,001-5,000638 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCarlisle, United KingdomHQ recorded Nov 6, 2026501-1,000610 contacts →

Exact match

“Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000600 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
7Exact matchKortrijk, BelgiumHQ recorded Nov 6, 2026501-1,000591 contacts →

Exact match

“Vandelanotte, opgericht in 1948 door Roger Vandelanotte, is uitgegroeid tot het grootste onafhankelijke kantoor in België, met ook een vestiging in Rijsel (Frankrijk).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWarsaw, PolandHQ recorded Nov 6, 2026201-500416 contacts →

Exact match

“We are a leading Polish consulting firm committed to helping businesses make informed decisions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchJakarta, IndonesiaHQ recorded Nov 6, 2026201-500373 contacts →

Exact match

“Founded in MUC Consulting (MUC) is at the forefront of business consultancy in Indonesia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMontevideo, UruguayHQ recorded Nov 6, 2026201-500349 contacts →

Exact match

“Guyer & Regules is proud to be considered as Uruguay’s first choice for international and domestic complex legal, accounting and tax work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 2026201-500307 contacts →

Exact match

“TaxPrime is a Tax Consulting Firm, based in Jakarta, the Capital City of Indonesia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBangalore, IndiaHQ recorded Nov 6, 2026201-500295 contacts →

Exact match

“Established in the year 1981, Singhvi Dev & Unni LLP, Chartered Accountants (SDU), is a professional services firm headquartered in Bengaluru, India and also operating from its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchExeter, United KingdomHQ recorded Nov 6, 2026n/a289 contacts →

Exact match

“Private client services for businesses and individuals”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMumbai, IndiaHQ recorded Nov 6, 2026201-500278 contacts →

Exact match

“Transaction Square is a Tax, Regulatory and Business Advisory firm founded by entrepreneurial Big-4 Partners having collective advisory experience spanning over 3 decades.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHasselt, BelgiumHQ recorded Nov 6, 2026201-500275 contacts →

Exact match

“UW RECHTERHAND Als ondernemer bent u maar zo sterk als de mensen die u omringen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSenningerberg, LuxembourgHQ recorded Nov 6, 202651-200258 contacts →

Exact match

“We are a high-end independent advisory firm offering a comprehensive and integrated range of direct and indirect tax solutions, as well as corporate finance, transfer pricing and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact match2900 Hellerup, DenmarkHQ recorded Nov 6, 2026201-500242 contacts →

Exact match

“KPMG ACOR TAX is a full-service tax consultancy firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBryanston, South AfricaHQ recorded Nov 6, 202651-200229 contacts →

Exact match

“Tax advisory and compliance in South Africa is our niche expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHamburg, GermanyHQ recorded Nov 6, 2026501-1,000206 contacts →

Exact match

“Die ADS Steuer.Beratung ist Ihr spezialisierter Partner für ganzheitliche Steuerberatung – exklusiv für Unternehmen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSumaré, BrazilHQ recorded Nov 6, 2026n/a202 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMilan, ItalyHQ recorded Nov 6, 202651-200194 contacts →

Exact match

“RPLT is an Italian independent law and tax firm, founded in 1949, with 6 offices throughout Italy, major international links, and more than one hundred and seventy highly skilled…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBaraboo, NE, United StatesHQ recorded Nov 6, 202651-200194 contacts →

Exact match

“We are driven by more than a quality tax return, we provide effective solutions to help you, your family, and your business succeed.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchNewcastle, AustraliaHQ recorded Nov 6, 202651-200185 contacts →

Exact match

“With over 35 years of successful operation, Prosperity has the technical expertise, industry experience and resources to assist clients meet their financial objectives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202651-200180 contacts →

Exact match

“Zeifmans is a full-service tax, accounting and consulting firm based in Toronto, Canada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSydney, AustraliaHQ recorded Nov 6, 2026n/a178 contacts →

Exact match

“AGEIS takes pride in revolutionising the landscape of accounting, tax, legal advisory.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 21,205 private client international tax advisors worldwide

See the full list, filter by size, metro and specialty, and access 68,501 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Private client international tax advisors worldwide at a glance

As of Nov 6, 2026
36.0%Verified-email coverage
9.0Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
12,709
11-50
6,626
51-200
1,068
201-500
163
501-1,000
54
1,001-5,000
38
5,001-10,000
12
10001+
6

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 private client international tax advisors are linked below.
What qualifies
Company records worldwide whose business descriptions match “private client international 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 68,501 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.

Private client international tax advisors by location

111 lists · largest first

Every Private client international 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 “private client international tax advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many private client international tax advisors are there worldwide?

RevenueBase identified 21,205 company matches for private client international 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?

ILS World tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most private client international tax advisors?

Germany leads with 3,658 companies, followed by the United States (3,322) and Brazil (1,104). Every private client international tax advisors list by country and city is linked on this page.

Which city has the most private client international tax advisors?

London leads with 356 company records, followed by Sao Paulo (309) and Milan (212).

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 68,501 professional contacts with verified work emails tracked across these 21,205 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.