Company lists · Data refreshed November 2026

Top 25 Audit support companies based in Switzerland

RevenueBase identified 169 company matches for audit support companies associated with Switzerland as of November 2026 and tracks 2,085 professional contacts across them, including 1,147 with verified work emails. Zurich is the largest hub.

This list covers company matches for audit support companies associated with Switzerland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
169Companies
2,085Contacts tracked
1,147Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest audit support companies based in Switzerland

Ranked by team size
Top 25 of 169 company matches for audit support companies based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchZürich, SwitzerlandHQ recorded Nov 6, 20261,001-5,0001,164 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMuri Bei Bern, SwitzerlandHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Die T+R AG ist eine bedeutende regionale Dienstleistungsunternehmung in den Bereichen der Wirtschaftsberatung, der Wirtschaftsprüfung und der Steuerberatung, die Sie bei all Ihren…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“Swiss legal service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchAarau, SwitzerlandHQ recorded Nov 6, 202611-5023 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchZurich, SwitzerlandHQ recorded Nov 6, 2026n/a22 contacts →

Exact match

“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCham, SwitzerlandHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Highly qualified for tailor-made service”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchStadtkreis 8 Riesbach, SwitzerlandHQ recorded Nov 6, 202611-5019 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWinterthur, SwitzerlandHQ recorded Nov 6, 202611-5018 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBasel, SwitzerlandHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Wir entwickeln für Sie individuelle und auf Ihre Bedürfnisse angepasste Lösungen in den Bereichen Treuhand, Wirtschaftsprüfung, Steuern und Unternehmensberatung- Treuhand: Wir…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLangenthal, SwitzerlandHQ recorded Nov 6, 202611-5015 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLiestal, SwitzerlandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Die Duttweiler Treuhand AG ist Ihre Spezialistin für Buchführungen und Rechnungswesen, Ihre Expertin für Steuerberatungen, Wirtschaftsprüfungen, Unternehmensberatungen und…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Lenz Treuhand AG is an accounting company based out of Seefeldstrasse 35, Zürich, Canton of Zurich, Switzerland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchZofingen, SwitzerlandHQ recorded Nov 6, 202611-5011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“CONTROVA AG was founded in 2004 in Zug as BCS Audit AG and renamed CONTROVA AG in 2012.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchStadtkreis 3 Wiedikon, SwitzerlandHQ recorded Nov 6, 202611-5010 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchChur, SwitzerlandHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Wir begleiten und beraten, fokussiert und unkompliziert.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLugano, SwitzerlandHQ recorded Nov 6, 202611-509 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchOlten, SwitzerlandHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Ziele auf den Punkt gebracht.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLyss, SwitzerlandHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Immer mehr Banken bieten für Kleinunternehmen und Startups integrierte webbasierte Buchhaltungs- und Auftragssoftware an.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchOlten, SwitzerlandHQ recorded Nov 6, 20261-109 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLuzern, SwitzerlandHQ recorded Nov 6, 20261-108 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchStadtkreis 2, SwitzerlandHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Steuerberatung / Treuhand / Unternehmensberatung / Wirtschaftsprüfung”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchAarau, SwitzerlandHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Die Expertinnen und Experten von Gruber Partner in Aarau schaffen Klarheit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBern, SwitzerlandHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Accounting/Audit/Tax Advice/Management Consultancy”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchFreienbach, SwitzerlandHQ recorded Nov 6, 202611-507 contacts →

Exact match

“STR Treuhand unterstützt Kunden in den Bereichen Startup-Unterstützung, Unternehmensberatung, Treuhand, Steuerberatung und Wirtschaftsprüfung.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 169 audit support companies based in Switzerland

See the full list, filter by size, metro and specialty, and access 1,147 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Audit support companies based in Switzerland at a glance

As of Nov 6, 2026
55.0%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
13.6%Largest-city concentration · Zurich
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
121
11-50
36
51-200
3
1,001-5,000
2
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 169 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Switzerland whose business descriptions match “audit support companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,147 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “audit support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many audit support companies are there based in Switzerland?

RevenueBase identified 169 company matches for audit support companies associated with Switzerland as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

BDO Switzerland tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most audit support companies?

Zurich leads with 23 company records, followed by Geneva (9) and Zug (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,147 professional contacts with verified work emails tracked across these 169 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 169 audit support companies based in Switzerland. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.