Company lists · Data refreshed September 2026

Top 25 Fiduciary tax preparation firms based in Switzerland

Name: Fiduciary tax preparation firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 733 companies tracked

RevenueBase identified 733 fiduciary tax preparation firms headquartered in Switzerland as of September 2026 and tracks 3,117 professional contacts across them, including 1,310 with verified work emails. Zurich is the largest hub.

This list covers fiduciary tax preparation firms headquartered in Switzerland, 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 20, 2026.

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 20, 2026 86% judged on-target in blind review

733Companies

3,117Contacts tracked

1,310Verified emails

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The 25 largest fiduciary tax preparation firms based in Switzerland

Ranked by team size

Top 25 of 733 fiduciary tax preparation firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to fiduciary tax preparation 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	Kendris	Partial evidence	Zug, SwitzerlandHQ checked Sep 20, 2026	201-500	171 contacts →
	Partial evidence “KENDRIS is an international advisory and fiduciary services firm for wealthy individuals, family offices, corporations and institutional clients.” Source: RevenueBase Database · checked Sep 20, 2026
2	FIDAG	Partial evidence	Martigny, SwitzerlandHQ checked Sep 20, 2026	51-200	66 contacts →
	Partial evidence “Fiduciaire FIDAG SA, fondée en 1959, est un acteur majeur en Suisse romande avec ses 135 collaborateurs répartis dans 4 cantons.” Source: RevenueBase Database · checked Sep 20, 2026
3	Aeberli Treuhand AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	53 contacts →
	Indirect evidence “Seit 75 Jahren betreut aeberli Geschäfts- und Privatkunden in den Bereichen Steuern, Buchhaltung und Revision.” Source: RevenueBase Database · checked Sep 20, 2026
4	Fineac Treuhand TAX Audit	Indirect evidence	Zug, SwitzerlandHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Unabhängig von der Grösse des Anliegens: Wir von Fineac klären mit Ihnen die genauen Bedürfnisse ab und entwickeln für Sie das beste Dienstleistungspaket – individuell und…” Source: RevenueBase Database · checked Sep 20, 2026
5	Tretor AG	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Die TRETOR AG gehört zu den führenden Treuhandunternehmen in der Nordwestschweiz.” Source: RevenueBase Database · checked Sep 20, 2026
6	Hüsser Gmür Partner AG	Indirect evidence	Baden-dättwil, SwitzerlandHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence “Hüsser Gmür + Partner AG ist Ihr aktiver Partner für klassische Treuhanddienstleistungen, Steuerberatung und Wirtschaftsprüfung.” Source: RevenueBase Database · checked Sep 20, 2026
7	Wadsack	Indirect evidence	Zug, SwitzerlandHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Treuhandlösungen, die den Unterschied machen – im Herzen von Zug!” Source: RevenueBase Database · checked Sep 20, 2026
8	Fiduciaire Fidinter SA	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 20, 2026	11-50	23 contacts →
	Partial evidence “Fidinter, fondée en 1918, est une fiduciaire suisse de taille moyenne avec des bureaux à Lausanne, Zürich et Zoug.” Source: RevenueBase Database · checked Sep 20, 2026
9	Berater & Partner LTD	Partial evidence	Luzern, SwitzerlandHQ checked Sep 20, 2026	11-50	23 contacts →
	Partial evidence “Berater & Partner is a renowned and qualified boutique firm where proven and proactive specialists provide interdisciplinary and top quality advisory services in fiduciary, legal…” Source: RevenueBase Database · checked Sep 20, 2026
10	US TAX Services AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “At U.S.” Source: RevenueBase Database · checked Sep 20, 2026
11	Multifiduciaire Fribourg SA	Indirect evidence	Fribourg, SwitzerlandHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “Professionnels reconnus aux compétences larges, nos services sont dits efficaces.” Source: RevenueBase Database · checked Sep 20, 2026
12	Fidexaudit SA	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 20, 2026	11-50	20 contacts →
	Partial evidence “Depuis plus de 30 années, Fidexaudit accompagne ses clients dans tous les domaines de la fiduciaire.” Source: RevenueBase Database · checked Sep 20, 2026
13	Nofival SA	Partial evidence	Martigny, SwitzerlandHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “Notre fiduciaire-conseil est l’un des leaders de la branche dans sa région (Valais / Vaud).” Source: RevenueBase Database · checked Sep 20, 2026
14	Eurex Suisse	Indirect evidence	Chêne-bourg, SwitzerlandHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “La technologie au service du conseil, l’humain au cœur de la performance.” Source: RevenueBase Database · checked Sep 20, 2026
15	Findea Ltd. Switzerland	Partial evidence	Winterthur, SwitzerlandHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Findea AG – Your digital fiduciary partner for start-ups and SMEs throughout Switzerland.” Source: RevenueBase Database · checked Sep 20, 2026
16	RRT AG Treuhand UND Revision	Indirect evidence	Chur, SwitzerlandHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Wir sind ein unabhängiges Bündner Unternehmen mit Tradition für Treuhand, Steuer- Prüfungs- und Immobiliendienstleistungen, gegründet 1948.” Source: RevenueBase Database · checked Sep 20, 2026
17	Juris Treuhand AG	Indirect evidence	Zug, SwitzerlandHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Wir bieten Ihnen integrale Lösungen an, begleiten und unterstützen Sie bei der Gründung, Mehrwertsteuer, Buchhaltung, Lohnbuchhaltung, Steuererklärungen und weitere…” Source: RevenueBase Database · checked Sep 20, 2026
18	Treuvision AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Durchblick: TreuVision unterstützt kleine und mittlere Unternehmen (KMU) bei der Buchführung, Rechnungslegung, finanziellen Unternehmenssteuerung, Einhaltung der Steuer- und…” Source: RevenueBase Database · checked Sep 20, 2026
19	Sanders US TAX Services	Strong evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	16 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
20	PKF Zurich - Switzerland	Partial evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “PKF Zurich, Switzerland “PKF” is the brand under which tens of thousands of dedicated professionals in independent firms in 150 countries collaborate closely to provide fiduciary…” Source: RevenueBase Database · checked Sep 20, 2026
21	Renius Treuhand AG	Indirect evidence	Bassersdorf, SwitzerlandHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “renius treuhand ag – die persönliche Treuhand-Boutique mit umfassender Erfahrung.” Source: RevenueBase Database · checked Sep 20, 2026
22	Fidinam Genève SA	Partial evidence	Geneva, SwitzerlandHQ checked Sep 20, 2026	11-50	15 contacts →
	Partial evidence “Active à Genève depuis 1972, Fidinam (Genève) SA fournit des services fiduciaires, du conseil juridique, patrimonial et fiscal à une clientèle suisse et internationale parmi…” Source: RevenueBase Database · checked Sep 20, 2026
23	Amity Partners Sarl	Partial evidence	Geneve, SwitzerlandHQ checked Sep 20, 2026	11-50	14 contacts →
	Partial evidence “A global provider of independent fiduciary services to professional advisers, international corporate groups and private clients.” Source: RevenueBase Database · checked Sep 20, 2026
24	GP Fiduciaire SA	Partial evidence	SwitzerlandHQ checked Sep 20, 2026	11-50	14 contacts →
	Partial evidence “G&P Fiduciaire SA, Genève, est active dans les principaux domaines fiduciaires que sont la comptabilité, la révision, la fiscalité et le conseil d'entreprise, G&P Fiduciaire SA…” Source: RevenueBase Database · checked Sep 20, 2026
25	Aegerter Brändle AG FÜR Steuer- UND Wirtschaftsberatung	Indirect evidence	Rapperswil, SwitzerlandHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “Als Treuhandunternehmen mit rund 30 Mitarbeitenden möchten wir Unternehmen und unternehmerisch denkende Personen umfassend begleiten.” Source: RevenueBase Database · checked Sep 20, 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: fiduciary tax preparation 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 fiduciary tax preparation firms.
Partial evidence: Its own public description names part of fiduciary tax preparation firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiduciary tax preparation 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 733 fiduciary tax preparation firms based in Switzerland

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Fiduciary tax preparation firms based in Switzerland at a glance

As of Sep 20, 2026

42.0%Verified-email coverage

4.3Average contacts per company

1-10Median size (employees)

7.9%Largest-city concentration · Zurich

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

554

11-50

159

51-200

201-500

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 733 companies.

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 fiduciary tax preparation 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.
What qualifies: Companies headquartered in Switzerland whose own description of what they do matches “fiduciary tax preparation 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 fiduciary tax preparation 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 fiduciary tax preparation firms, and records with no verified work email. Companies headquartered outside Switzerland are excluded even when they keep an office there.
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, 1,310 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 20, 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.

Fiduciary tax preparation firms by metro

Fiduciary tax preparation firms in Zurich58
Fiduciary tax preparation firms in Geneve54
Fiduciary tax preparation firms in Lausanne32

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 fiduciary tax preparation 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 fiduciary tax preparation firms are there based in Switzerland?

RevenueBase identified 733 fiduciary tax preparation firms headquartered in Switzerland 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?

Kendris, headquartered in Zug, tops this list with the largest team on record.

Which city has the most fiduciary tax preparation firms?

Zurich leads with 58 headquartered companies, followed by Geneve (54) and Lausanne (32).

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 1,310 verified decision-maker contacts tracked across these 733 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 20, 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.