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

Enter auditor name:

Fact Sheet TRESO Treuhand AG

Core Company Information
Company Name TRESO Treuhand AG
Company UID CHE-106.728.075
Alternative / previous Names Büttiker Treuhand AG
Domicile Olten
Canton SO
Legal Form Limited corporation
Firm Inscription Date 20.12.1990
FAOA Information
RAB ID 500263
RAB Permission licensed audit expert
FAOA License active
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations TREUHAND|SUISSE
Number of auditors with permission 3  (20.33 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 12 years (max.: 25.5 years)

Total number of statutory audit engagements: 61 (Ranked #141 in Switzerland)

Change in number of audit engagements: +1 (since 31.12.2019), +1 (over the last 12 months)

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

Limited corporation 3 1 3 1 2 42 2 54
Limited liability company           1   1
Foundation 1         3   4
Cooperative 1   1         2
5 1 4 1 2 46 2 61

This auditor is recorded as statutory auditor for 19 deleted entities. These are not included in the table above.

Display client list

Related audit firms

Direct personal relationship:

Latest audit engagements

These are this auditor's latest audit engagements.

Client Name Client UID Domicile Start Date Auditor Branch
SM Schreinerei AG CHE-183.690.738 Dittingen 26.06.2020 Olten
Reto Wyss AG CHE-114.258.083 Zofingen 13.02.2020 Olten
Cevi Olten-Stiftung CHE-110.276.024 Olten 30.12.2019 Olten
Mabalux AG CHE-106.322.394 Dulliken 04.12.2019 Olten
INNOXEL System AG CHE-101.951.921 Hägendorf 07.11.2018 Olten
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
INNOXEL System AG CHE-101.951.921 Hägendorf 08.01.2020 Opting-out Olten
BTH Job Dress SA CHE-106.318.228 Mendrisio 03.12.2019 Opting-out Olten
Simontex SA CHE-100.055.527 Mendrisio 03.12.2019 Opting-out Olten
Livo AG CHE-107.959.708 Olten 29.03.2019 Auditor switch Olten
Innovon AG in Liquidation CHE-100.407.046 Kappel (SO) 21.12.2018 Opting-out Olten