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Fact Sheet Wehrli Treuhand AG

Core Company Information
Company Name Wehrli Treuhand AG
UID CHE-480.307.051
Alternative / previous Names -
Domicile Winterthur
Canton ZH
Legal Form Limited corporation
Inscription Date 12.04.2024
Takeovers: Wehrli Treuhand (CHE-108.501.105), per 12.04.2024
FAOA Information
FAOA ID 505511
RAB Permission licensed auditor
FAOA License active (since 30.05.2024)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations TREUHAND|SUISSE
SwissAccounting
Number of auditors with permission 1  (34.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 10.1 years (max.: 29.4 years)

Total number of statutory audit clients: 34 (Ranked #180 in Switzerland)

Change in number of audit engagements: +9 (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.

  TG ZG ZH ∑
Limited corporation 4 1 17 22
Limited liability company     5 5
Foundation     5 5
Cooperative     1 1
Association     1 1
∑ 4 1 29 34

Display client list

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
NILOS Schweiz AG CHE-445.934.987 Otelfingen 15.05.2026 Auditor switch Winterthur
Guardiaris Switzerland AG CHE-114.433.618 Zug 31.03.2026 First auditor Winterthur
GRP Gebäudereinigung GmbH CHE-152.811.940 Zürich 25.02.2026 First auditor Winterthur
Hasenstrick Alpen Event GmbH CHE-260.621.968 Dürnten 23.02.2026 First auditor Winterthur
Zeier Holzbau GmbH CHE-135.725.297 Elsau 04.02.2026 First auditor Winterthur
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