Company lists · Data verified August 2026

Top 14 Bookkeeping outsourcing companies based in Switzerland

Name: Bookkeeping 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 52 companies tracked

There are 52 bookkeeping outsourcing companies headquartered in Switzerland (RevenueBase, August 2026). RevenueBase tracks 129 professional contacts across them, including 39 with verified work emails and 3 with mobile numbers. Geneve is the largest hub.

This list covers bookkeeping 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.

52Companies

129Contacts tracked

39Verified emails

3Mobile numbers

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The 14 largest bookkeeping outsourcing companies based in Switzerland

Ranked by team size

Top 14 of 52 bookkeeping 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	Xellenz Treuhand AG	Zurich	11-50	10	7
2	Tschanz Treuhand AG	Lyss	11-50	10	5
3	Veriduna Treuhand AG	Dubendorf	11-50	8	7
4	Gaapex Sàrl	Lausanne	1-10	8	5
5	Zahlenmacher AG	n/a	1-10	5	2
6	Infeas AG	Zurich	11-50	4	3
7	Onaccounting AG	Dubendorf	1-10	3	3
8	Lorenzini Finanzen & Administration Gmbh	Untereggen Sankt Gallen	1-10	2	1
9	Proaccounting Gmbh	Lenzburg	1-10	1	1
10	Affina Gmbh	Seltisberg	1-10	1	1
11	Finaxio	Martigny	1-10	1	1
12	Akribe Buchhaltung Gmbh	Hergiswil	1-10	1	1
13	JBS Solutions Gmbh	Harkingen	1-10	1	1
14	Tala Treuhand & Consulting Gmbh	Cham	1-10	1	1

Showing 14 of 52 bookkeeping outsourcing companies based in Switzerland

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Bookkeeping outsourcing companies based in Switzerland at a glance

As of Aug 28, 2026

1-10Median size (employees)

GeneveLargest hub · 4 HQs

3Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

Bookkeeping outsourcing companies by metro

Metro	Companies
Bookkeeping outsourcing companies in Geneve	4
Bookkeeping outsourcing companies in Zurich	3
Bookkeeping outsourcing companies in Lausanne	2
Bookkeeping outsourcing companies in Bern	2
Bookkeeping outsourcing companies in Dubendorf	2
Bookkeeping outsourcing companies in Geroldswil	1
Bookkeeping outsourcing companies in Gelterkinden	1

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 “bookkeeping 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; 2 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 bookkeeping outsourcing companies are there based in Switzerland?

There are 52 bookkeeping outsourcing companies headquartered in Switzerland as of August 2026 (RevenueBase).

What is the largest company on this list?

Xellenz Treuhand AG, headquartered in Zurich, tops this list with the largest team on record.

Which city has the most bookkeeping outsourcing companies?

Geneve leads with 4 headquartered companies, followed by Zurich (3) and Lausanne (2).

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 39 verified decision-maker contacts tracked across these 52 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.