Company lists · Data refreshed August 2026

Top 25 Accounting consulting firms based in Switzerland

Name: Accounting consulting firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 30, 2026 673 companies tracked

There are 673 accounting consulting firms headquartered in Switzerland (RevenueBase, August 2026). RevenueBase tracks 4,750 professional contacts across them, including 2,172 with verified work emails and 64 with mobile numbers. Zurich is the largest hub.

This list covers accounting consulting 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, how directly it supports the match, and when it was last checked. Data refreshed August 30, 2026.

673Companies

4,750Contacts tracked

2,172Verified emails

64Mobile numbers

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The 25 largest accounting consulting firms based in Switzerland

Ranked by team size

Top 25 of 673 accounting consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Aug 30, 2026. Evidence rates how directly each company's own description names accounting consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts	Verified emails
1	BDO SwitzerlandStrong evidence “BDO is one of the leading audit, accounting and consulting firms in Switzerland.” Source: company website · checked Aug 30, 2026	Zofingen, Switzerland	1,001-5,000	1,100	702
2	Balmer-Etienne AGIndirect evidence “We act for you.” Source: company website · checked Aug 30, 2026	Switzerland	51-200	152	95
3	Gewerbe-Treuhand AGIndirect evidence “Unternehmen erwirtschaften ihre Wertschöpfung, indem sie sich voll und ganz für ihre Kunden einsetzen.” Source: company website · checked Aug 30, 2026	Sursee, Switzerland	51-200	111	64
4	Treuhand- UND Revisionsgesellschaft Mattig-Suter UND PartnerIndirect evidence “Die Treuhand- und Revisionsgesellschaft Mattig-Suter und Partner (MSuP) wurde am 1.” Source: company website · checked Aug 30, 2026	Zurich, Switzerland	51-200	63	1
5	T R AGIndirect evidence “Die T+R AG ist eine bedeutende regionale Dienstleistungsunternehmung in den Bereichen der Wirtschaftsberatung, der Wirtschaftsprüfung und der Steuerberatung, die Sie bei all Ihren…” Source: company website · checked Aug 30, 2026	Muri Bei Bern, Switzerland	51-200	60	34
6	Fiduciaria Mega SAIndirect evidence “fiduciariaMega SA offers entrepreneurs, companies and individuals a comprehensive range of national and international consultancy services designed to provide pragmatic…” Source: company website · checked Aug 30, 2026	Lugano, Switzerland	51-200	47	30
7	Bommer Partner TreuhandIndirect evidence “Für unsere Kunden generieren wir Mehrwert durch professionelle und individuelle Dienstleistungen auf der Basis von persönlichen Beziehungen in den Bereichen Treuhand…” Source: company website · checked Aug 30, 2026	Bern, Switzerland	51-200	46	32
8	Core Partners LTDIndirect evidence “Four companies with a long tradition sail under the flag of «CORE Partners Ltd»: CORE Treuhand AG, CORE Revision AG, CORE Fiduciaire Revicor SA and CORE Medical AG.” Source: company website · checked Aug 30, 2026	Freiburg, Switzerland	51-200	44	3
9	Diacron GroupPartial evidence “Diacron Group provides accounting, tax and corporate services.” Source: company website · checked Aug 30, 2026	Lugano, Switzerland	51-200	41	26
10	PWC Switzerland - LegalIndirect evidence “Swiss legal service provider.” Source: company website · checked Aug 30, 2026	Zurich, Switzerland	51-200	35	14
11	PKF Fiduciaire SAIndirect evidence “PKF Fiduciaire SA est spécialisée dans l'audit, l'expertise comptable, le conseil fiscal, la gestion des salaires et l'administration de sociétés.” Source: company website · checked Aug 30, 2026	Geneve, Switzerland	51-200	34	25
12	Gruppo InterfidaIndirect evidence “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…” Source: company website · checked Aug 30, 2026	Locarno, Switzerland	51-200	34	24
13	Provida AGPartial evidence “Provida covers the full range of auditing, consulting, tax & law and trust services.” Source: company website · checked Aug 30, 2026	Dietlikon, Switzerland	51-200	29	18
14	Fineac Treuhand TAX AuditIndirect 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: company website · checked Aug 30, 2026	Zug, Switzerland	11-50	27	19
15	Tretor AGIndirect evidence “Die TRETOR AG gehört zu den führenden Treuhandunternehmen in der Nordwestschweiz.” Source: company website · checked Aug 30, 2026	Liestal, Switzerland	11-50	27	15
16	Hüsser Gmür Partner AGIndirect evidence “Hüsser Gmür + Partner AG ist Ihr aktiver Partner für klassische Treuhanddienstleistungen, Steuerberatung und Wirtschaftsprüfung.” Source: company website · checked Aug 30, 2026	Baden-Dattwil, Switzerland	11-50	25	16
17	AlltaxIndirect evidence “Ganz persönlich und alles aus einer Hand: Treuhand, Steuern, Wirtschaftsprüfung und Unternehmensberatung.” Source: company website · checked Aug 30, 2026	Basel, Switzerland	11-50	22	14
18	Protiviti SwitzerlandPartial evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: company website · checked Aug 30, 2026	Zurich, Switzerland	n/a	21	5
19	Caminada ZurichPartial evidence “We have been acknowledged as an independent, flexible and trustworthy consulting firm since 1946.” Source: company website · checked Aug 30, 2026	Zurich, Switzerland	11-50	20	13
20	Value Solutions AGIndirect evidence “Highly qualified for tailor-made service” Source: company website · checked Aug 30, 2026	Cham, Switzerland	11-50	20	10
21	Fidexaudit SAIndirect evidence “Depuis plus de 30 années, Fidexaudit accompagne ses clients dans tous les domaines de la fiduciaire.” Source: company website · checked Aug 30, 2026	Vevey, Switzerland	11-50	20	2
22	THV AGPartial evidence “thv AG is an Accounting company located in Ziegelrain 29, Zeiningen, Switzerland.” Source: company website · checked Aug 30, 2026	Aarau, Switzerland	11-50	19	15
23	KMU Treuhand & RevisionIndirect evidence “KMU Treuhand & Revision – für Sie da.” Source: company website · checked Aug 30, 2026	Siebnen, Switzerland	51-200	17	13
24	ConsultivePartial evidence “Consultive ist Ihr KMU Partner für Revision, Treuhand und Unternehmensberatung in Winterthur.” Source: company website · checked Aug 30, 2026	Winterthur, Switzerland	11-50	17	13
25	Mazars In SwitzerlandIndirect evidence “Mazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*.” Source: company website · checked Aug 30, 2026	Geneve, Switzerland	201-500	17	9

Showing 25 of 673 accounting consulting firms based in Switzerland

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Accounting consulting firms based in Switzerland at a glance

As of Aug 30, 2026

1-10Median size (employees)

ZurichLargest hub · 59 HQs

64Contacts with mobile numbers

Aug 30, 2026Data refreshed

Companies by employee count

1-10

475

11-50

151

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Accounting consulting firms by metro

Metro	Companies
Accounting consulting firms in Zurich	59
Accounting consulting firms in Geneve	28
Accounting consulting firms in Lugano	24
Accounting consulting firms in Zug	21
Accounting consulting firms in Basel	19
Accounting consulting firms in Lausanne	17
Accounting consulting firms in Geneva	13

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 accounting consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies: Companies headquartered in Switzerland whose own description of what they do matches “accounting consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among accounting consulting 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 an evidence rating so you can judge each match yourself.
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, 2,172 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 August 30, 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.

Frequently asked

How many accounting consulting firms are there based in Switzerland?

There are 673 accounting consulting firms headquartered in Switzerland as of August 2026 (RevenueBase).

What is the largest company on this list?

BDO Switzerland, headquartered in Zofingen, tops this list with the largest team on record.

Which city has the most accounting consulting firms?

Zurich leads with 59 headquartered companies, followed by Geneve (28) and Lugano (24).

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 2,172 verified decision-maker contacts tracked across these 673 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.