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

Fact Sheet HTO Treuhand AG

Core Company Information
Company Name HTO Treuhand AG
UID CHE-107.086.865
Alternative / previous Names Büttiker & Häfliger Treuhand AG
Domicile Olten
Canton SO
Legal Form Limited corporation
Firm Inscription Date 14.01.1980
FAOA Information
FAOA ID 500048
RAB Permission licensed audit expert
FAOA License active (since 18.10.2007)
Link to FAOA website View auditor profile at FAOA
Branch offices (0) -
Membership in Associations EXPERTsuisse
Number of auditors with permission 3  (20.00 audit engagements per employee on average)
Auditor Statistics

Average engagement duration: 13.8 years (max.: 29.6 years)

Total number of statutory audit engagements: 60 (Ranked #143 in Switzerland)

Change in number of audit engagements: - (since 31.12.2022), +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 12 2 2 3 1 3 2 18 1 1 3 48
Limited liability company 2   1         1       4
Foundation 3             3       6
Cooperative 1                     1
Association               1       1
18 2 3 3 1 3 2 23 1 1 3 60

This auditor is recorded as statutory auditor for 37 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 Type of switch Auditor Branch
A.B.O. Bodentechnik AG CHE-113.190.123 Rothrist 24.11.2022 Auditor switch Olten
Berger Roman AG CHE-156.962.710 Oberbuchsiten 02.05.2022 First auditor Olten
Altersheim St. Martin CHE-108.086.595 Olten 27.12.2021 First auditor Olten
Frey Architekten AG dipl. Arch. ETH/FH/SIA CHE-445.103.673 Olten 21.12.2021 First auditor Olten
BerkeMed Schweiz GmbH CHE-456.671.674 Aarburg 05.11.2021 First auditor 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
Hans Rhyn AG CHE-102.007.054 Bettenhausen 17.10.2022 Opting-out Olten
Reha Technology AG CHE-215.998.993 Olten 29.11.2021 Opting-out Olten
Diamond Nails & Beauty Spa GmbH CHE-271.662.291 Aarburg 02.09.2021 Opting-out Olten
Muracker AG Lenzburg CHE-113.424.485 Lenzburg 25.09.2020 Opting-out Olten
Imorema AG CHE-101.301.580 Sarnen 15.11.2019 Opting-out Olten