Company lists · Data refreshed September 2026

Top 25 Business process outsourcing accounting services based in Switzerland

RevenueBase identified 127 company matches for business process outsourcing accounting services associated with Switzerland as of September 2026 and tracks 486 professional contacts across them, including 176 with verified work emails. Zurich is the largest hub.

This list covers company matches for business process outsourcing accounting services 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 September 21, 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 Sep 21, 2026 How this list was built
127Companies
486Contacts tracked
176Verified emails
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The 25 largest business process outsourcing accounting services based in Switzerland

Ranked by team size
Top 25 of 127 company matches for business process outsourcing accounting services based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchBaar, SwitzerlandHQ recorded Sep 21, 202651-20078 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchOlten, SwitzerlandHQ recorded Sep 21, 202611-5020 contacts →

Exact match

“State of the art accounting + CFO Services for Startups und KMU.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchAarau, SwitzerlandHQ recorded Sep 21, 202611-5019 contacts →

Exact match

“thv AG is an Accounting company located in Ziegelrain 29, Zeiningen, Switzerland.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchLausanne, SwitzerlandHQ recorded Sep 21, 202611-5018 contacts →

Exact match

“Notre société est spécialisée dans l’outsourcing des transactions dans les domaines de gestion comptable, gestion des ressources humaines, gestion de votre administration.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchZurich, SwitzerlandHQ recorded Sep 21, 202611-5013 contacts →

Exact match

“Osy provides Business Process Outsourcing and Business Process Automation in one solution.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchStadtkreis 2, SwitzerlandHQ recorded Sep 21, 202611-5010 contacts →

Exact match

“XELLENZ revolutioniert die Buchführung.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchLyss, SwitzerlandHQ recorded Sep 21, 202611-5010 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchDübendorf, SwitzerlandHQ recorded Sep 21, 202611-508 contacts →

Exact match

“Veriduna Treuhand AG is a financial services company based out of Stettbachstrasse 6, Dübendorf, Canton of Zurich, Switzerland.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchBaar, SwitzerlandHQ recorded Sep 21, 202611-508 contacts →

Exact match

“We love numbers!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchLausanne, SwitzerlandHQ recorded Sep 21, 20261-108 contacts →

Exact match

“Gaapex is specialized in financial and accounting outsourcing services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchZürich, SwitzerlandHQ recorded Sep 21, 20261-106 contacts →

Exact match

“Tarantino AG is an accounting company based out of Gartenstrasse 25, 8002 Zürich, Zurich, Switzerland.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchGeneva, SwitzerlandHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Revidor Société Fiduciaire SA is an accounting company based out of Rue Agasse 54, Genève, Switzerland.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchSt-sulpice, SwitzerlandHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Un jour, vous avez eu une idée que vous avez trouvée géniale.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLucerne, SwitzerlandHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Von den Steuern und vom Jahresabschluss über klassische oder digitale Buchhaltung bis hin zur Finanzberatung für kleinere und mittlere Unternehmen bietet Zahlenmacher sämtliche…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchZug, SwitzerlandHQ recorded Sep 21, 20261-104 contacts →

Exact match

“Focus on your core business, while we take care of your accounting.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchZurich, SwitzerlandHQ recorded Sep 21, 202611-504 contacts →

Exact match

“Infeas bietet Unternehmen individuelle Lösungen im Bereich Finanzen und den damit verbundenen Themen, somit können Sie sich auf ihr Kerngeschäft konzentrieren.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchAffoltern A.a., SwitzerlandHQ recorded Sep 21, 20261-104 contacts →

Exact match

“Wyser Consult GmbH ist Dienstleister für treuhänderische und kaufmännische Aufgaben, welche die Buchhaltung sowie die Steuer- und Unternehmensberatung umfassen.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchDübendorf, SwitzerlandHQ recorded Sep 21, 20261-103 contacts →

Exact match

“Treuhand - All in One: Unsere Buchhaltungsabos zum Fixpreis - Belegverbuchung - Jahresrechnung - Steuererklärung - MWST Abrechnung - GV Protokoll - Optimierungsvorschläge -…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchWallisellen, SwitzerlandHQ recorded Sep 21, 202611-503 contacts →

Exact match

“Wir bieten maßgeschneiderte Treuhand- und Buchhaltungsdienstleistungen für kleine und mittlere Unternehmen (KMU), um ihren Geschäftserfolg nachhaltig zu fördern.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchSierre, SwitzerlandHQ recorded Sep 21, 20261-103 contacts →

Exact match

“We are offering you a customised follow-up in accounting and administration so that you can stay focused on your business.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchUntereggen, SwitzerlandHQ recorded Sep 21, 20261-102 contacts →

Exact match

“Wir bieten Ihnen Dienstleistungen für eine professionelle Betreuung Ihrer Finanzen und Administration an.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchCugy, SwitzerlandHQ recorded Sep 21, 20261-102 contacts →

Exact match

“A chaque professionnel ses compétences!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchLuzern, SwitzerlandHQ recorded Sep 21, 20261-102 contacts →

Exact match

“Mit Ihren Anliegen rund um Rechnungswesen, Steuern, Personaladministration und vielem mehr sind Sie bei uns richtig gelandet.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchBrügg, SwitzerlandHQ recorded Sep 21, 20261-102 contacts →

Exact match

“myhomejob bietet Ihnen flexible und kostengünstige Business-Services für Ihr Unternehmen.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchBasel, SwitzerlandHQ recorded Sep 21, 202611-501 contacts →

Exact match

“Absolut kundenorientiertes Outsourcing in den Bereichen IT, Finanzen, Kundendienst.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 127 business process outsourcing accounting services based in Switzerland

See the full list, filter by size, metro and specialty, and access 176 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business process outsourcing accounting services based in Switzerland at a glance

As of Sep 21, 2026
36.2%Verified-email coverage
3.8Average contacts per company
1-10Median size (employees)
7.1%Largest-city concentration · Zurich
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
106
11-50
18
51-200
2

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 127 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 “business process outsourcing accounting services” 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 176 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 September 21, 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 “business process outsourcing accounting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many business process outsourcing accounting services are there based in Switzerland?

RevenueBase identified 127 company matches for business process outsourcing accounting services associated with Switzerland as of September 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?

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

Which city has the most business process outsourcing accounting services?

Zurich leads with 9 company records, followed by Lausanne (7) and Geneva (7).

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 176 professional contacts with verified work emails tracked across these 127 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 September 21, 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 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.