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Fact Sheet Treucontrol AG

Core Company Information
Company Name Treucontrol AG
UID CHE-102.086.823
Alternative / previous Names Treucontrol SA, Treucontrol Ltd
Domicile Egg
Canton ZH
Legal Form Limited corporation
Inscription Date 28.12.1992
FAOA Information
FAOA ID 503326
RAB Permission licensed audit expert
FAOA License active (since 28.03.2008)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations -
Number of auditors with permission 2  (32.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 7.7 years (max.: 24.9 years)

Total number of statutory audit clients: 64 (Ranked #146 in Switzerland)

Change in number of audit engagements: - (since 31.12.2025), +7 (over the last 12 months)

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

  BE BL GL OW SZ ZG ZH ∑
Limited corporation 1 1 10 1 2 6 33 54
Limited liability company           1 5 6
Foundation             2 2
Association           1 1 2
∑ 1 1 10 1 2 8 41 64

This audit firm is recorded as statutory auditor for 22 deleted entities. These are not included in the table above.

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Related audit firms

Same domicile: 

Latest audit engagements
These are this auditor's latest audit engagements.
 
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Häpo Waschpark AG CHE-107.165.499 Winterthur 23.12.2025 Auditor switch Egg
E-Planung und Installation GmbH CHE-440.938.676 Volketswil 15.12.2025 First auditor Egg
Müller Heizung-Service AG CHE-108.362.536 Wald (ZH) 11.08.2025 Auditor switch Egg
Averio AG CHE-444.238.282 Winterthur 02.07.2025 First auditor Egg
ATTESTA Schweizer Zertifizierungsgesellschaft AG CHE-357.699.924 Freienbach 27.06.2025 First auditor Egg
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
Hansjörg Frey Vollenweider-Stiftung CHE-376.664.197 Maur 07.11.2024 Opting-out Egg
4 POS AG CHE-101.590.881 Baar 04.01.2023 Auditor switch Egg
Engelwurz AG in Liquidation CHE-113.828.747 Uesslingen-Buch 18.07.2022 Opting-out Egg
Immo Investor AG CHE-342.027.041 Zug 08.02.2021 Discontinued Egg
Process AG in Liquidation CHE-108.291.994 Zürich 18.12.2020 Auditor switch Egg