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Fact Sheet Audit Treuhand AG

Core Company Information
Company Name Audit Treuhand AG
UID CHE-100.983.841
Alternative / previous Names Staub-Gastro AG
Domicile Horgen
Canton ZH
Legal Form Limited corporation
Inscription Date 24.07.1991
FAOA Information
FAOA ID 501123
RAB Permission licensed audit expert
FAOA License active (since 28.02.2008)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations TREUHAND|SUISSE
SwissAccounting
Number of auditors with permission 6  (1.50 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 12.5 years (max.: 22 years)

Total number of statutory audit clients: 9 (Ranked #205 in Switzerland)

Change in number of audit engagements: -4 (since 31.12.2025), -15 (over the last 12 months)

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

  SZ TG ZG ZH
Limited corporation 2 1 1 3 7
Foundation       2 2
2 1 1 5 9

This audit firm is recorded as statutory auditor for 15 deleted entities. These are not included in the table above.

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Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Toblerplatz-Drogerie Kurt Häfliger AG CHE-107.826.349 Zürich 20.10.2023 Auditor switch Horgen
Kidssmile Foundation CHE-374.057.448 Zürich 10.05.2023 First auditor Horgen
Kitro SA CHE-215.007.526 Ecublens (VD) 05.12.2022 First auditor Horgen
Sanos Group AG CHE-233.710.575 Wallisellen 18.10.2022 First auditor Horgen
inAut GmbH CHE-171.636.407 Luzern 21.06.2021 First auditor Horgen
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
Kitro SA CHE-215.007.526 Ecublens (VD) 04.03.2026 Auditor switch Horgen
Stiftung Pfadihus H2O CHE-144.040.956 Horgen 29.01.2026 Auditor switch Horgen
"Wohnchetti" Thalwil CHE-106.366.670 Thalwil 19.01.2026 Auditor switch Horgen
Aandarta AG CHE-114.440.185 Wallisellen 13.01.2026 Auditor switch Horgen
Gordian Partners Family Office AG CHE-112.716.258 Wollerau 18.12.2025 Auditor switch Horgen