Company lists · Data refreshed September 2026

Top 25 Accounting and consulting firms based in Switzerland

RevenueBase identified 678 accounting and consulting firms headquartered in Switzerland as of September 2026 and tracks 5,341 professional contacts across them, including 2,226 with verified work emails and 88 with mobile numbers. Zurich is the largest hub.

This list covers accounting and 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 September 22, 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 22, 2026 86% judged on-target in blind review
678Companies
5,341Contacts tracked
2,226Verified emails
88Mobile numbers
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The 25 largest accounting and consulting firms based in Switzerland

Ranked by team size
Top 25 of 678 accounting and consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to accounting and 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 evidenceZürich, SwitzerlandHQ checked Sep 22, 20261,001-5,0001,090 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
2Indirect evidenceGenève, SwitzerlandHQ checked Sep 22, 2026201-500424 contacts →

Indirect evidence

“Forvis Mazars Group SC is an independent member of Forvis Mazars Global, a leading professional services network.”

Source: RevenueBase Database · checked Sep 22, 2026
3Indirect evidenceLuzern, SwitzerlandHQ checked Sep 22, 202651-200148 contacts →

Indirect evidence

“We act for you.”

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceLuzern, SwitzerlandHQ checked Sep 22, 202651-200107 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceSchwyz, SwitzerlandHQ checked Sep 22, 202651-20062 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceBern, SwitzerlandHQ checked Sep 22, 202651-20046 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 Sep 22, 2026
7Indirect evidenceLugano, SwitzerlandHQ checked Sep 22, 202651-20045 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 Sep 22, 2026
8Partial evidenceLugano, SwitzerlandHQ checked Sep 22, 2026201-50044 contacts →

Partial evidence

“Fidinam started its activities in Lugano (Canton Ticino, Switzerland) in 1960, principally providing a wide range of consulting and related services for companies, entrepreneurs…”

Source: RevenueBase Database · checked Sep 22, 2026
9Indirect evidenceDüdingen, SwitzerlandHQ checked Sep 22, 202651-20044 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 Sep 22, 2026
10Indirect evidenceLugano, SwitzerlandHQ checked Sep 22, 202651-20043 contacts →

Indirect evidence

“Servizi di consulenza integrata, dal 1972.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceGenève, SwitzerlandHQ checked Sep 22, 202651-20034 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 Sep 22, 2026
12Indirect evidenceLausanne, SwitzerlandHQ checked Sep 22, 202611-5034 contacts →

Indirect evidence

“Fiduciaire Michel Favre SA, créée en 1975, est une PME qui emploie env.”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceZürich, SwitzerlandHQ checked Sep 22, 202651-20034 contacts →

Indirect evidence

“Swiss legal service provider.”

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceLausanne, SwitzerlandHQ checked Sep 22, 202611-5033 contacts →

Indirect evidence

“DYN Group brings together qualified professionals to meet your business and wealth management needs.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidence6302 Zug, SwitzerlandHQ checked Sep 22, 202611-5028 contacts →

Indirect evidence

“Our promise since 1962.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceZug, SwitzerlandHQ checked Sep 22, 202611-5027 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 Sep 22, 2026
17Indirect evidenceLuzern, SwitzerlandHQ checked Sep 22, 202611-5027 contacts →

Indirect evidence

“Willkommen bei Ihrem Partner für Familien & Unternehmen.”

Source: RevenueBase Database · checked Sep 22, 2026
18Indirect evidenceLiestal, SwitzerlandHQ checked Sep 22, 202611-5027 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
19Partial evidenceRomanshorn, SwitzerlandHQ checked Sep 22, 202651-20026 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
20Indirect evidenceBaden-dättwil, SwitzerlandHQ checked Sep 22, 202611-5026 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
21Indirect evidenceAarau, SwitzerlandHQ checked Sep 22, 202611-5022 contacts →

Indirect evidence

“Ob für Unternehmen, Gemeinden oder Private: Wir sichern Ihre wirtschaftlich erfolgreiche Entwicklung.”

Source: RevenueBase Database · checked Sep 22, 2026
22Indirect evidenceBasel, SwitzerlandHQ checked Sep 22, 202611-5022 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
23Partial evidenceZurich, SwitzerlandHQ checked Sep 22, 2026n/a22 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 Sep 22, 2026
24Indirect evidenceChur, SwitzerlandHQ checked Sep 22, 202611-5021 contacts →

Indirect evidence

“Damit Sie Mehrwert erleben, setzen wir uns täglich mit einem breit abgestützten Angebot und bestens etablierten Prozessen für Sie ein.”

Source: RevenueBase Database · checked Sep 22, 2026
25Indirect evidenceZürich, SwitzerlandHQ checked Sep 22, 202611-5021 contacts →

Indirect evidence

“Als erfahrene Treuhandpartnerin mit fünf Standorten im Kanton Zürich begleiten wir Unternehmen und Privatpersonen mit persönlicher Beratung, hoher Fachkompetenz und einem klaren…”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 25 of 678 accounting and consulting firms based in Switzerland

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Accounting and consulting firms based in Switzerland at a glance

As of Sep 22, 2026
41.7%Verified-email coverage
1.6%Mobile-number coverage
7.9Average contacts per company
1-10Median size (employees)
9.1%Largest-city concentration · Zurich
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
486
11-50
157
51-200
14
201-500
5
501-1,000
1
1,001-5,000
2
5,001-10,000
1
10001+
1

Freshness & accuracy

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

Email last verified

Median 24.0d

Company record updated

Median 74.0d

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 and 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 and 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 and 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 and 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, 2,226 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 22, 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.

Accounting and consulting firms by metro

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 and 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 and consulting firms are there based in Switzerland?

RevenueBase identified 678 accounting and consulting 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?

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

Which city has the most accounting and consulting firms?

Zurich leads with 62 headquartered companies, followed by Geneve (27) and Zug (26).

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 2,226 verified decision-maker contacts tracked across these 678 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 22, 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.