Company lists · Data verified August 2026

Top 23 Accounting outsourcing companies based in Switzerland

Name: Accounting outsourcing companies based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 86 companies tracked

There are 86 accounting outsourcing companies headquartered in Switzerland (RevenueBase, August 2026). RevenueBase tracks 283 professional contacts across them, including 101 with verified work emails and 11 with mobile numbers. Zurich is the largest hub.

This list covers accounting outsourcing companies headquartered in Switzerland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

86Companies

283Contacts tracked

101Verified emails

11Mobile numbers

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The 23 largest accounting outsourcing companies based in Switzerland

Ranked by team size

Top 23 of 86 accounting outsourcing companies based in Switzerland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Diacron Group	Lugano	51-200	41	26
2	Z83 AG	Olten	11-50	20	11
3	CV Consulting Sàrl	Lausanne	11-50	18	9
4	Xellenz Treuhand AG	Zurich	11-50	10	7
5	Tschanz Treuhand AG	Lyss	11-50	10	5
6	Orava SA	Saint-Sulpice	11-50	10	4
7	Veriduna Treuhand AG	Dubendorf	11-50	8	7
8	Gaapex Sàrl	Lausanne	1-10	8	5
9	Tarantino AG	Zurich	1-10	7	5
10	Zahlenmacher AG	n/a	1-10	5	2
11	Infeas AG	Zurich	11-50	4	3
12	Onaccounting AG	Dubendorf	1-10	3	3
13	Lorenzini Finanzen & Administration Gmbh	Untereggen Sankt Gallen	1-10	2	1
14	Arnet Treuhand AG	Luzern	1-10	2	1
15	Proaccounting Gmbh	Lenzburg	1-10	1	1
16	Affina Gmbh	Seltisberg	1-10	1	1
17	Finaxio	Martigny	1-10	1	1
18	Aimafin AG	Zurich	1-10	1	1
19	Alemi Partners	Rapperswil-Jona Sankt Gallen	1-10	1	1
20	L R Helios Treuhand	Muri Bei Bern	1-10	1	1
21	Teamkmu	Stechelberg	1-10	1	1
22	Bally Finance Gmbh	Schonenwerd	1-10	1	1
23	Akribe Buchhaltung Gmbh	Hergiswil	1-10	1	1

Showing 23 of 86 accounting outsourcing companies based in Switzerland

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Accounting outsourcing companies based in Switzerland at a glance

As of Aug 28, 2026

1-10Median size (employees)

ZurichLargest hub · 8 HQs

11Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Accounting outsourcing companies by metro

Metro	Companies
Accounting outsourcing companies in Zurich	8
Accounting outsourcing companies in Lausanne	5
Accounting outsourcing companies in Geneve	4
Accounting outsourcing companies in Uetikon Am See	2
Accounting outsourcing companies in Zug	2
Accounting outsourcing companies in Bern	2
Accounting outsourcing companies in Gelterkinden	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “accounting outsourcing companies”, with match quality audited by blind human judging, and headquartered in Switzerland.
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: Contact records re-verify on a rolling cadence; 3 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many accounting outsourcing companies are there based in Switzerland?

There are 86 accounting outsourcing companies headquartered in Switzerland as of August 2026 (RevenueBase).

What is the largest company on this list?

Diacron Group, headquartered in Lugano, tops this list with the largest team on record.

Which city has the most accounting outsourcing companies?

Zurich leads with 8 headquartered companies, followed by Lausanne (5) and Geneve (4).

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 101 verified decision-maker contacts tracked across these 86 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.