Company lists · Data refreshed September 2026

Top 25 Gfsi audit consulting companies based in Switzerland

RevenueBase identified 176 gfsi audit consulting companies headquartered in Switzerland as of September 2026 and tracks 1,923 professional contacts across them, including 1,089 with verified work emails. Zurich is the largest hub.

This list covers gfsi audit consulting companies 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 28, 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 28, 2026 86% judged on-target in blind review
176Companies
1,923Contacts tracked
1,089Verified emails
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The 25 largest gfsi audit consulting companies based in Switzerland

Ranked by team size
Top 25 of 176 gfsi audit consulting companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to gfsi audit consulting companies: 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 28, 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 28, 2026
2Indirect evidenceMünchenstein, SwitzerlandHQ checked Sep 28, 2026201-500142 contacts →

Indirect evidence

“Chemgineering ist Ihr Partner für Engineering und Beratung im GMP-regulierten Umfeld.”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceZürich, SwitzerlandHQ checked Sep 28, 202651-20034 contacts →

Indirect evidence

“Swiss legal service provider.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceZurich, SwitzerlandHQ checked Sep 28, 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 28, 2026
5Partial evidenceStadtkreis 8 Riesbach, SwitzerlandHQ checked Sep 28, 202611-5020 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceLausanne, SwitzerlandHQ checked Sep 28, 202611-5020 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceVersoix | Genève, SwitzerlandHQ checked Sep 28, 202611-5018 contacts →

Indirect evidence

“Optimiso (by Iskera) apporte des solutions pour tous les projets liés au contrôle interne, aux certifications ISO, à l'organisation interne ou management des risques.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceWinterthur, SwitzerlandHQ checked Sep 28, 202611-5017 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceLangenthal, SwitzerlandHQ checked Sep 28, 202611-5017 contacts →

Indirect evidence

“Gfeller + Partner AG ist ein mittelständisches Dienstleistungsunternehmen, welches Wirtschaftsprüfungs, Steuer- und Beratungsdienstleistungen anbietet.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceZurich, SwitzerlandHQ checked Sep 28, 202611-5016 contacts →

Partial evidence

“Labor Veritas bietet chemische und mikrobiologische Dienstleistungsanalytik sowie Beratungsdienstleistungen (Durchführung von Audits, Unterstützung beim Aufbau und der…”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceMuttenz, SwitzerlandHQ checked Sep 28, 202611-5016 contacts →

Indirect evidence

“Valcoba is a public limited company founded in October 2013 and based in Muttenz.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceOberengstringen, SwitzerlandHQ checked Sep 28, 202611-5013 contacts →

Indirect evidence

“FEE-Consult AG is one of the leading quality and process management companies in Switzerland.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceZürich, SwitzerlandHQ checked Sep 28, 202611-5011 contacts →

Indirect evidence

“Helping Medical Device and Life Sciences achieve efficient GxP compliance”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceRombach, SwitzerlandHQ checked Sep 28, 202611-5010 contacts →

Partial evidence

“Your Partner for Quality Management in the Medical Device Industry We are convinced that the key to success in offering tailor-made consulting solutions lies in the business…”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceStadtkreis 3 Wiedikon, SwitzerlandHQ checked Sep 28, 202611-5010 contacts →

Partial evidence

“Ostschweizerische Treuhand Zürich AG, short OTG, has been in business since 1918 as an accredited audit firm conducting full and limited audits.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceZofingen, SwitzerlandHQ checked Sep 28, 202611-509 contacts →

Indirect evidence

“We are independent auditors, tax advisors and accountants.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceBasel, SwitzerlandHQ checked Sep 28, 20261-108 contacts →

Partial evidence

“Epiqure is a consulting firm specializing in GxP Quality, Compliance and Technology services for life-science companies.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceLugano, SwitzerlandHQ checked Sep 28, 20261-108 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceCarouge, SwitzerlandHQ checked Sep 28, 202611-508 contacts →

Indirect evidence

“Ecobion vous accompagne tout au long de votre démarche d'assurance qualité.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceArlesheim, SwitzerlandHQ checked Sep 28, 20261-108 contacts →

Indirect evidence

“Das Team der Birseck-Treuhand AG heisst Sie herzlich willkommen!”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceOlten, SwitzerlandHQ checked Sep 28, 20261-108 contacts →

Indirect evidence

“Unser Unternehmen bietet hoch stehende Dienstleistungen in den Bereichen Wirtschaftsprüfung, Buchführung und Abschlussberatung sowie Steuer- und Unternehmensberatung an.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceLuzern, SwitzerlandHQ checked Sep 28, 20261-107 contacts →

Indirect evidence

“Die Lufida-Revision stellt Unternehmen aus allen Branchen ihre Dienstleistungen als unabhängiges und flexibles Wirtschaftsprüfungs- und Beratungsunternehmen zur Verfügung.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidenceBern, SwitzerlandHQ checked Sep 28, 202611-507 contacts →

Partial evidence

“Accounting/Audit/Tax Advice/Management Consultancy”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceZug, SwitzerlandHQ checked Sep 28, 20261-107 contacts →

Indirect evidence

“Tax Consultancy We consult and guide companies sector-independent in national and international corporate tax law (corporate profit tax, tax on capital, withholding tax, stamp…”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceGenève, SwitzerlandHQ checked Sep 28, 202611-507 contacts →

Indirect evidence

“La Fiduciaire de Rive SA est implantée à Genève depuis 1957, au cœur de la Ville, dans le quartier historique des Rues-Basses.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 176 gfsi audit consulting companies based in Switzerland

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Gfsi audit consulting companies based in Switzerland at a glance

As of Sep 28, 2026
56.6%Verified-email coverage
10.9Average contacts per company
1-10Median size (employees)
11.4%Largest-city concentration · Zurich
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
142
11-50
28
51-200
1
201-500
1
1,001-5,000
1
5,001-10,000
1

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 176 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 gfsi audit consulting companies, 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 “gfsi audit consulting companies”. 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 gfsi audit consulting companies), 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 gfsi audit consulting companies, 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, 1,089 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 28, 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 gfsi audit consulting companies, 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 gfsi audit consulting companies are there based in Switzerland?

RevenueBase identified 176 gfsi audit consulting companies 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 gfsi audit consulting companies?

Zurich leads with 20 headquartered companies, followed by Zug (8) and Geneve (7).

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 1,089 verified decision-maker contacts tracked across these 176 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 28, 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.