Listing of Amrize Ltd as part of the spin-off from Holcim

Get detailed statistics about any audit firm in Switzerland. Just type the auditor name in the field below and off you go!

Fact Sheet RST Treuhand AG

Core Company Information
Company Name RST Treuhand AG
UID CHE-105.969.050
Alternative / previous Names RST Revisions-, Steuerberatungs- und Treuhand AG, RST Révisions, Consultations fiscales, Fiduciaire SA, RST Auditing, Tax counselling and Trust Company Ltd, RST Ufficio Fiduciario di Revisione e di Consultazione fiscale SA (until 27.09.2018)
Domicile Basel
Canton BS
Legal Form Limited corporation
Inscription Date 03.06.1953
FAOA Information
FAOA ID 500681
RAB Permission licensed audit expert
FAOA License active (since 26.10.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) RST Revisions-, Steuerberatungs- und Treuhand AG (CHE-306.735.219) in Zürich (ZH)
Membership in Associations EXPERTsuisse
Number of auditors with permission 2  (45.50 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 13.9 years (max.: 31.7 years)

Total number of statutory audit engagements: 91 (Ranked #123 in Switzerland)

Change in number of audit engagements: -14 (since 31.12.2024), -18 (over the last 12 months)

Details regarding the distribution of the audit engagements across legal forms and cantons are depicted in the table below.

  AG BL BS GR LU SO TG ZG ZH ∑
Limited corporation 3 22 21   2 2 1 1 13 65
Limited liability company 3   1             4
Foundation 3 2 11 1         1 18
Cooperative 2   1             3
Association           1       1
∑ 11 24 34 1 2 3 1 1 14 91

This audit firm is recorded as statutory auditor for 74 deleted entities. These are not included in the table above.

Display client list

Audit Engagements by Branch Office

The 91 statutory audits are performed by the branch offices as indicated in the table below.

  AG BL BS GR LU SO TG ZG ZH ∑
Basel 11 24 34 1 2 3 1 1 14 91
∑ 11 24 34 1 2 3 1 1 14 91

Show client list for Basel.

Related audit firms

Direct personal relationship:

Further connections:

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Venus Diagnostics Group AG CHE-216.928.179 Schönenbuch 08.04.2025 First auditor Basel
Venus Diagnostics HoldCo AG CHE-146.454.027 Schönenbuch 08.04.2025 First auditor Basel
CG Group Holding AG CHE-458.419.424 Basel 07.01.2025 First auditor Basel
MPI Technologies AG CHE-107.405.108 Baden 11.04.2024 Auditor switch Basel
MPL AG Elektronik-Unternehmen CHE-103.482.848 Baden 11.04.2024 Auditor switch Basel
Discontinued audit engagements
The following audit engagements were lost recently, either to a competitor, due to auditor resignation or due to an opting out.
 
Client Name Client UID Domicile End Date Reason Auditor Branch
Weishaupt AG CHE-105.853.789 Geroldswil 23.06.2025 Auditor switch Basel
DAS DACH. Stiftung für sozialen Arbeits- und Wohnraum CHE-350.916.782 Basel 06.06.2025 Auditor switch Basel
Jost Umzugs AG CHE-106.035.701 Aesch (BL) 02.06.2025 Auditor switch Basel
BAUR HÜRLIMANN AG CHE-115.606.778 Baden 27.05.2025 Auditor switch Basel
Stiftung Abendrot CHE-101.872.842 Basel 23.05.2025 Auditor switch Basel