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Core Company Information
UID CHE-105.776.249
Alternative / previous Names Organisations und Treuhand AG
OTAG Treuhand
Domicile Klingnau
Canton AG
Legal Form Limited corporation
Firm Inscription Date 31.12.1965
FAOA Information
FAOA ID 501062
RAB Permission licensed audit expert
FAOA License active (since 16.11.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (2) ORGANISATIONS UND TREUHAND AG (CHE-408.651.344) in Baden (AG)
ORGANISATIONS UND TREUHAND AG (CHE-235.104.492) in Mägenwil (AG)
Membership in Associations EXPERTsuisse
Number of auditors with permission 2  (54.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 11 years (max.: 28.5 years)

Total number of statutory audit engagements: 108 (Ranked #93 in Switzerland)

Change in number of audit engagements: +1 (since 31.12.2022), +4 (over the last 12 months)

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

  Aargau Bern Basel Stadt Luzern Zürich
Limited corporation 71 1   2 16 90
Limited liability company 6         6
Foundation 9 1 1     11
Cooperative 1         1
87 2 1 2 16 108

This auditor is recorded as statutory auditor for 35 deleted entities. These are not included in the table above.

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Audit Engagements by Branch Office

The 108 statutory audits are performed by the branch offices as indicated in the table below.

  Aargau Bern Basel Stadt Luzern Zürich
Baden 20 1 1   7 29
Klingnau 67 1   2 9 79
87 2 1 2 16 108

Show client list for Baden, Klingnau.

Related audit firms

Direct personal relationship:

Latest audit engagements
These are this auditor's latest audit engagements.
Client Name Client UID Domicile Start Date Type of switch Auditor Branch
Karl Vögele Hoch- und Tiefbau AG CHE-272.704.957 Leuggern 15.03.2023 Auditor switch Klingnau
KITA Baden GmbH CHE-341.679.577 Baden 28.12.2022 Auditor switch Baden
Avarel Studios AG CHE-105.703.836 Gebenstorf 23.06.2022 First auditor Baden
OYU AG CHE-152.257.133 Zürich 07.04.2022 First auditor Klingnau
Accelerator Technologies AG CHE-211.806.327 Villigen 01.04.2022 First auditor Klingnau
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
RehaCity AG CHE-113.928.998 Basel 03.01.2022 Auditor switch Klingnau
Gebr. Knecht, Sägerei und Holzhandlung AG CHE-101.784.497 Koblenz 16.12.2021 Opting-out Klingnau
Innovative Finance Stiftung CHE-460.176.455 Baden 16.07.2021 Auditor switch Baden
Thermalquellen Hotel AG in Liq. CHE-359.498.584 Zurzach 17.06.2021 Opting-out Klingnau
Erwin Suter AG, Maschinenfabrik Retus CHE-102.184.584 Kölliken 26.05.2021 Auditor switch Baden