Company lists · Data refreshed August 2026

Top 25 Accounting consulting firms based in Switzerland

RevenueBase identified 673 accounting consulting firms headquartered in Switzerland as of August 2026 and 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 30, 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 RevenueBase Smart Search rating on every row Refreshed Aug 30, 2026 86% judged on-target in blind review
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. RevenueBase Smart Search rates how each company's information relates to accounting consulting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceZofingen, Switzerland1,001-5,0001,100 contacts →

Strong evidence

“BDO is one of the leading audit, accounting and consulting firms in Switzerland.”

Source: RevenueBase Database · checked Aug 30, 2026
2Indirect evidenceSwitzerland51-200152 contacts →

Indirect evidence

“We act for you.”

Source: RevenueBase Database · checked Aug 30, 2026
3Indirect evidenceSursee, Switzerland51-200111 contacts →

Indirect evidence

“Unternehmen erwirtschaften ihre Wertschöpfung, indem sie sich voll und ganz für ihre Kunden einsetzen.”

Source: RevenueBase Database · checked Aug 30, 2026
4Indirect evidenceZurich, Switzerland51-20063 contacts →

Indirect evidence

“Die Treuhand- und Revisionsgesellschaft Mattig-Suter und Partner (MSuP) wurde am 1.”

Source: RevenueBase Database · checked Aug 30, 2026
5Indirect evidenceMuri Bei Bern, Switzerland51-20060 contacts →

Indirect 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: RevenueBase Database · checked Aug 30, 2026
6Indirect evidenceLugano, Switzerland51-20047 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Aug 30, 2026
7Indirect evidenceBern, Switzerland51-20046 contacts →

Indirect evidence

“Für unsere Kunden generieren wir Mehrwert durch professionelle und individuelle Dienstleistungen auf der Basis von persönlichen Beziehungen in den Bereichen Treuhand…”

Source: RevenueBase Database · checked Aug 30, 2026
8Indirect evidenceFreiburg, Switzerland51-20044 contacts →

Indirect 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: RevenueBase Database · checked Aug 30, 2026
9Partial evidenceLugano, Switzerland51-20041 contacts →

Partial evidence

“Diacron Group provides accounting, tax and corporate services.”

Source: RevenueBase Database · checked Aug 30, 2026
10Indirect evidenceZurich, Switzerland51-20035 contacts →

Indirect evidence

“Swiss legal service provider.”

Source: RevenueBase Database · checked Aug 30, 2026
11Indirect evidenceGeneve, Switzerland51-20034 contacts →

Indirect 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: RevenueBase Database · checked Aug 30, 2026
12Indirect evidenceLocarno, Switzerland51-20034 contacts →

Indirect 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: RevenueBase Database · checked Aug 30, 2026
13Partial evidenceDietlikon, Switzerland51-20029 contacts →

Partial evidence

“Provida covers the full range of auditing, consulting, tax & law and trust services.”

Source: RevenueBase Database · checked Aug 30, 2026
14Indirect evidenceZug, Switzerland11-5027 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 Aug 30, 2026
15Indirect evidenceLiestal, Switzerland11-5027 contacts →

Indirect evidence

“Die TRETOR AG gehört zu den führenden Treuhandunternehmen in der Nordwestschweiz.”

Source: RevenueBase Database · checked Aug 30, 2026
16Indirect evidenceBaden-Dattwil, Switzerland11-5025 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Aug 30, 2026
17Indirect evidenceBasel, Switzerland11-5022 contacts →

Indirect evidence

“Ganz persönlich und alles aus einer Hand: Treuhand, Steuern, Wirtschaftsprüfung und Unternehmensberatung.”

Source: RevenueBase Database · checked Aug 30, 2026
18Partial evidenceZurich, Switzerlandn/a21 contacts →

Partial 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: RevenueBase Database · checked Aug 30, 2026
19Partial evidenceZurich, Switzerland11-5020 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Aug 30, 2026
20Indirect evidenceCham, Switzerland11-5020 contacts →

Indirect evidence

“Highly qualified for tailor-made service”

Source: RevenueBase Database · checked Aug 30, 2026
21Indirect evidenceVevey, Switzerland11-5020 contacts →

Indirect evidence

“Depuis plus de 30 années, Fidexaudit accompagne ses clients dans tous les domaines de la fiduciaire.”

Source: RevenueBase Database · checked Aug 30, 2026
22Partial evidenceAarau, Switzerland11-5019 contacts →

Partial evidence

“thv AG is an Accounting company located in Ziegelrain 29, Zeiningen, Switzerland.”

Source: RevenueBase Database · checked Aug 30, 2026
23Indirect evidenceSiebnen, Switzerland51-20017 contacts →

Indirect evidence

“KMU Treuhand & Revision – für Sie da.”

Source: RevenueBase Database · checked Aug 30, 2026
24Partial evidenceWinterthur, Switzerland11-5017 contacts →

Partial evidence

“Consultive ist Ihr KMU Partner für Revision, Treuhand und Unternehmensberatung in Winterthur.”

Source: RevenueBase Database · checked Aug 30, 2026
25Indirect evidenceGeneve, Switzerland201-50017 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Aug 30, 2026

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
45.7%Verified-email coverage
1.3%Mobile-number coverage
7.1Average contacts per company
1-10Median size (employees)
8.8%Largest-city concentration · Zurich
Aug 30, 2026Page data refreshed

Companies by employee count

1-10
475
11-50
151
51-200
14
201-500
3
1,001-5,000
2
5,001-10,000
1
10001+
1

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 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 “accounting consulting 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 accounting consulting 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 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 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, 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

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 accounting consulting 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 accounting consulting firms are there based in Switzerland?

RevenueBase identified 673 accounting consulting firms headquartered in Switzerland as of August 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?

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 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.