Company lists · Data refreshed October 2026

Top 25 International tax accounting firms based in Switzerland

RevenueBase identified 437 company matches for international tax accounting firms associated with Switzerland as of October 2026 and tracks 2,893 professional contacts across them, including 1,057 with verified work emails and 52 with mobile numbers. Zurich is the largest hub.

This list covers company matches for international tax accounting firms associated with Switzerland, 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 1, 2026.

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 1, 2026 How this list was built
437Companies
2,893Contacts tracked
1,057Verified emails
52Mobile numbers
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The 25 largest international tax accounting firms based in Switzerland

Ranked by team size
Top 25 of 437 company matches for international tax accounting firms based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 matchZurich, SwitzerlandHQ recorded Oct 1, 2026201-500175 contacts →

Exact match

“VISCHER is a leading Swiss law firm offering integrated legal and tax expertise.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchZug, SwitzerlandHQ recorded Oct 1, 2026201-500171 contacts →

Exact match

“KENDRIS is an international advisory and fiduciary services firm for wealthy individuals, family offices, corporations and institutional clients.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchLuzern, SwitzerlandHQ recorded Oct 1, 202651-200148 contacts →

Exact match

“We act for you.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchZurich, SwitzerlandHQ recorded Oct 1, 202651-200120 contacts →

Exact match

“A reliable partner in legal and taxation matters is always important, both in the best-possible situation, when someone is planning an exciting new project, or in the…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchZurich, SwitzerlandHQ recorded Oct 1, 202651-20050 contacts →

Exact match

“Tax Partner AG is a leading independent tax boutique based in Zurich.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchLugano, SwitzerlandHQ recorded Oct 1, 202651-20045 contacts →

Exact match

“fiduciariaMega SA offers entrepreneurs, companies and individuals a comprehensive range of national and international consultancy services designed to provide pragmatic…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchGeneva, SwitzerlandHQ recorded Oct 1, 202651-20034 contacts →

Exact match

“PKF Fiduciaire SA est spécialisée dans l'audit, l'expertise comptable, le conseil fiscal, la gestion des salaires et l'administration de sociétés.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchMendrisio, SwitzerlandHQ recorded Oct 1, 202651-20034 contacts →

Exact match

“Fondato nel 1960, il Gruppo Interfida si distingue nel mercato della consulenza aziendale, fiscale e immobiliare grazie al suo impegno costante nel fornire servizi qualificati e…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchBaden-dättwil, SwitzerlandHQ recorded Oct 1, 202611-5026 contacts →

Exact match

“Hüsser Gmür + Partner AG ist Ihr aktiver Partner für klassische Treuhanddienstleistungen, Steuerberatung und Wirtschaftsprüfung.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchZurich, SwitzerlandHQ recorded Oct 1, 202611-5024 contacts →

Exact match

“ADB Altorfer Duss & Beilstein is one of the leading tax law firms in Switzerland.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchZurich, SwitzerlandHQ recorded Oct 1, 202611-5022 contacts →

Exact match

“At U.S.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchBasel, SwitzerlandHQ recorded Oct 1, 202611-5022 contacts →

Exact match

“We are an experienced team of specialised and independent lawyers with international and multi-jurisdictional experience.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchZurich, SwitzerlandHQ recorded Oct 1, 202611-5021 contacts →

Exact match

“PrimeTax provides superior tax consulting services to corporations and individuals.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchCham, SwitzerlandHQ recorded Oct 1, 202611-5021 contacts →

Exact match

“Highly qualified for tailor-made service”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchStadtkreis 8 Riesbach, SwitzerlandHQ recorded Oct 1, 202611-5020 contacts →

Exact match

“We have been acknowledged as an independent, flexible and trustworthy consulting firm since 1946.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchGlattbrugg, SwitzerlandHQ recorded Oct 1, 202611-5019 contacts →

Exact match

“MOORE Zürich AG - Treuhand- und Steuerberatung, Zürich-Glattbrugg Fachberatung und Dienstleistungen für natürliche und juristische Personen aus dem Inland und Ausland – Sie…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchLugano, SwitzerlandHQ recorded Oct 1, 202611-5019 contacts →

Exact match

“Fidinam & Partners SA fornisce consulenza fiscale domestica e internazionale a persone fisiche e giuridiche.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchZug, SwitzerlandHQ recorded Oct 1, 20261-1017 contacts →

Exact match

“inVersa ist ein Unternehmen, welches Dienstleistungen in den Bereichen Treuhand, Steuer- und Unternehmensberatung, Umstrukturierungen, Nachfolgeberatung, Unternehmensbewertungen…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchZurich, SwitzerlandHQ recorded Oct 1, 202611-5016 contacts →

Exact match

“Sanders US Tax Services is a tax preparation, consulting and advisory firm for Americans living abroad and for anyone else looking for help when dealing with the US tax system.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchBasel, SwitzerlandHQ recorded Oct 1, 202611-5014 contacts →

Exact match

“Wir entwickeln für Sie individuelle und auf Ihre Bedürfnisse angepasste Lösungen in den Bereichen Treuhand, Wirtschaftsprüfung, Steuern und Unternehmensberatung- Treuhand: Wir…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchLiestal, SwitzerlandHQ recorded Oct 1, 202611-5014 contacts →

Exact match

“Die Duttweiler Treuhand AG ist Ihre Spezialistin für Buchführungen und Rechnungswesen, Ihre Expertin für Steuerberatungen, Wirtschaftsprüfungen, Unternehmensberatungen und…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchGeneva, SwitzerlandHQ recorded Oct 1, 2026201-50014 contacts →

Exact match

“Mazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchLugano, SwitzerlandHQ recorded Oct 1, 202611-5013 contacts →

Exact match

“Cortesi & Associati SA è una società svizzera con sede a Lugano specializzata nella consulenza fiscale e aziendale.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchZug, SwitzerlandHQ recorded Oct 1, 202611-5013 contacts →

Exact match

“Seit 1982 vertrauen nationale und internationale Gesellschaften und Privatpersonen in den Bereichen Steuern, Rechnungswesen, Unternehmensberatung und Wirtschaftsprüfung auf aidoo.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchSt. Gallen, SwitzerlandHQ recorded Oct 1, 202611-5013 contacts →

Exact match

“Steuerberatung für Unternehmen und Privatpersonen I Advokatur I Treuhand I Business Software Lösungen”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 437 international tax accounting firms based in Switzerland

See the full list, filter by size, metro and specialty, and access 1,057 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International tax accounting firms based in Switzerland at a glance

As of Oct 1, 2026
36.5%Verified-email coverage
1.8%Mobile-number coverage
6.6Average contacts per company
1-10Median size (employees)
16.2%Largest-city concentration · Zurich
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
315
11-50
94
51-200
11
201-500
4
10001+
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 33.0d

Company record updated

Median 83.0d

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.
What qualifies
Company records associated with Switzerland whose business descriptions match “international tax accounting firms” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,057 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 1, 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.

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 “international tax accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international tax accounting firms are there based in Switzerland?

RevenueBase identified 437 company matches for international tax accounting firms associated with Switzerland 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?

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

Which city has the most international tax accounting firms?

Zurich leads with 71 company records, followed by Geneva (38) and Lugano (26).

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 1,057 professional contacts with verified work emails tracked across these 437 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 1, 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.