Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 1,179 companies tracked

RevenueBase identified 1,179 professional services firms headquartered in Switzerland as of September 2026 and tracks 5,662 professional contacts across them, including 2,276 with verified work emails and 113 with mobile numbers. Zurich is the largest hub.

This list covers professional services 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 5, 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 5, 2026 86% judged on-target in blind review

1,179Companies

5,662Contacts tracked

2,276Verified emails

113Mobile numbers

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The 25 largest professional services firms based in Switzerland

Ranked by team size

Top 25 of 1,179 professional services firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to professional services 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Balmer-Etienne AG	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 5, 2026	51-200	148 contacts →
	Indirect evidence “We act for you.” Source: RevenueBase Database · checked Sep 5, 2026
2	Wenger Vieli	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 5, 2026	51-200	120 contacts →
	Indirect evidence “A reliable partner in legal and taxation matters is always important, both in the best-possible situation, when someone is planning an exciting new project, or in the…” Source: RevenueBase Database · checked Sep 5, 2026
3	Gewerbe-Treuhand AG	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 5, 2026	51-200	107 contacts →
	Indirect evidence “Unternehmen erwirtschaften ihre Wertschöpfung, indem sie sich voll und ganz für ihre Kunden einsetzen.” Source: RevenueBase Database · checked Sep 5, 2026
4	Avanta	Indirect evidence	Baar, SwitzerlandHQ checked Sep 5, 2026	51-200	78 contacts →
	Indirect evidence “Accounting, Audit, HR, Tax, Legal and Insurance: Our specialists take over all services along your value chain, allowing you to focus fully on your core competencies.” Source: RevenueBase Database · checked Sep 5, 2026
5	Oberson Abels SA	Indirect evidence	Lancy, SwitzerlandHQ checked Sep 5, 2026	51-200	75 contacts →
	Indirect evidence “OBERSON ABELS is a Swiss law firm exclusively focused on business law advising in the following areas- Tax law (including specific fields of taxation such as taxation of financial…” Source: RevenueBase Database · checked Sep 5, 2026
6	T R AG	Indirect evidence	Muri Bei Bern, SwitzerlandHQ checked Sep 5, 2026	51-200	60 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 Sep 5, 2026
7	System Agency	Indirect evidence	Geneva, SwitzerlandHQ checked Sep 5, 2026	11-50	54 contacts →
	Indirect evidence “Leaders in Management” Source: RevenueBase Database · checked Sep 5, 2026
8	Bommer Partner Treuhand	Strong evidence	Bern, SwitzerlandHQ checked Sep 5, 2026	51-200	46 contacts →
	Strong 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 5, 2026
9	Fiduciaria Mega SA	Indirect evidence	Lugano, SwitzerlandHQ checked Sep 5, 2026	51-200	45 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 5, 2026
10	Fidinam Group	Indirect evidence	Lugano, SwitzerlandHQ checked Sep 5, 2026	201-500	44 contacts →
	Indirect 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 5, 2026
11	Core Partners LTD	Indirect evidence	Düdingen, SwitzerlandHQ checked Sep 5, 2026	51-200	44 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 5, 2026
12	WMM Group	Indirect evidence	Lugano, SwitzerlandHQ checked Sep 5, 2026	51-200	43 contacts →
	Indirect evidence “Servizi di consulenza integrata, dal 1972.” Source: RevenueBase Database · checked Sep 5, 2026
13	Echo SA	Indirect evidence	Genève, SwitzerlandHQ checked Sep 5, 2026	11-50	37 contacts →
	Indirect evidence “Emblematic figure of the Geneva basin since 1943 Proud of its roots Founded under the name of Société Fiduciaire et de Gérance SA, then known as SFG Conseil SA, the company has…” Source: RevenueBase Database · checked Sep 5, 2026
14	PKF Fiduciaire SA	Indirect evidence	Genève, SwitzerlandHQ checked Sep 5, 2026	51-200	34 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 5, 2026
15	Gruppo Interfida	Indirect evidence	Mendrisio, SwitzerlandHQ checked Sep 5, 2026	51-200	34 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 Sep 5, 2026
16	Prométhée Conseil	Indirect evidence	Petit Lancy, SwitzerlandHQ checked Sep 5, 2026	11-50	34 contacts →
	Indirect evidence “Assurance 🩺 Prévoyance Fiscalité Investissement Immobilier Nos experts et services vous guideront au mieux pour vous apporter la solution la plus optimale.” Source: RevenueBase Database · checked Sep 5, 2026
17	PWC Switzerland - Legal	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 5, 2026	51-200	34 contacts →
	Indirect evidence “Swiss legal service provider.” Source: RevenueBase Database · checked Sep 5, 2026
18	DYN Group	Strong evidence	Lausanne, SwitzerlandHQ checked Sep 5, 2026	11-50	33 contacts →
	Strong evidence “DYN Group brings together qualified professionals to meet your business and wealth management needs.” Source: RevenueBase Database · checked Sep 5, 2026
19	Academix Consult AG	Indirect evidence	Trogen, SwitzerlandHQ checked Sep 5, 2026	51-200	30 contacts →
	Indirect evidence “Finanzfragen sind individuell und erlauben keine pauschalen Lösungen.” Source: RevenueBase Database · checked Sep 5, 2026
20	Buchhaltungs UND Revisions AG	Indirect evidence	6302 Zug, SwitzerlandHQ checked Sep 5, 2026	11-50	28 contacts →
	Indirect evidence “Our promise since 1962.” Source: RevenueBase Database · checked Sep 5, 2026
21	Fineac Treuhand TAX Audit	Indirect evidence	Zug, SwitzerlandHQ checked Sep 5, 2026	11-50	27 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 5, 2026
22	Voser Rechtsanwälte	Indirect evidence	Baden, SwitzerlandHQ checked Sep 5, 2026	11-50	27 contacts →
	Indirect evidence “VOSER Rechtsanwälte erbringt umfassende Dienstleistungen bezüglich der rechtlichen Beratung und Vertretung von Unternehmen, Privatpersonen und der öffentlichen Hand.” Source: RevenueBase Database · checked Sep 5, 2026
23	Opes AG	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 5, 2026	11-50	27 contacts →
	Indirect evidence “Willkommen bei Ihrem Partner für Familien & Unternehmen.” Source: RevenueBase Database · checked Sep 5, 2026
24	Tretor AG	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 5, 2026	11-50	27 contacts →
	Indirect evidence “Die TRETOR AG gehört zu den führenden Treuhandunternehmen in der Nordwestschweiz.” Source: RevenueBase Database · checked Sep 5, 2026
25	Htlc Network	Indirect evidence	Chiasso, SwitzerlandHQ checked Sep 5, 2026	51-200	27 contacts →
	Indirect evidence “HTLC Network is a business consulting company providing a wide range of services such as business development, accountging, global payroll, global mobility and business brokerage.” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: professional services firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names professional services firms.
Partial evidence: Its own public description names part of professional services firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional services firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,179 professional services firms based in Switzerland

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Professional services firms based in Switzerland at a glance

As of Sep 5, 2026

40.2%Verified-email coverage

2.0%Mobile-number coverage

4.8Average contacts per company

1-10Median size (employees)

9.8%Largest-city concentration · Zurich

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

892

11-50

241

51-200

201-500

501-1,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

2,1410–30

13131–60

061–90

090–180

4180+

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 professional services 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 “professional services 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 professional services 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 professional services 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, 2,276 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 5, 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.

Professional services firms by metro

Professional services firms in Zurich116
Professional services firms in Geneve56
Professional services firms in Lugano49
Professional services firms in Zug42
Professional services firms in Basel36
Professional services firms in Lausanne36
Professional services firms in Geneva27

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 professional services 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 professional services firms are there based in Switzerland?

RevenueBase identified 1,179 professional services 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?

Balmer-Etienne AG, headquartered in Luzern, tops this list with the largest team on record.

Which city has the most professional services firms?

Zurich leads with 116 headquartered companies, followed by Geneve (56) and Lugano (49).

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 2,276 verified decision-maker contacts tracked across these 1,179 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 5, 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.