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

Fact Sheet GtA Treuhand AG

Core Company Information

Company Name	GtA Treuhand AG
UID	CHE-106.157.310
Alternative / previous Names	Beat Schmid Treuhand AG (until 23.12.2008) Heinz Gäumann Treuhand AG (until 23.07.2025)
Domicile	Thun
Canton	BE
Legal Form	Limited corporation
Inscription Date	28.02.1992

FAOA Information

FAOA ID	503669
RAB Permission	licensed audit expert
FAOA License	active (since 29.10.2008)
Link to FAOA website	View auditor profile at FAOA
Branch offices (0)	-
Membership in Associations	SwissAccounting
Number of auditors with permission	1 (18.00 audit engagements per employee on average)

Auditor Statistics

Average engagement duration: 12.3 years (max.: 31.2 years)

Total number of statutory audit clients: 18 (Ranked #194 in Switzerland)

Change in number of audit engagements: -1 (since 31.12.2025), -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.

	Bern	Luzern	Wallis	Zug	∑
Limited corporation	12	1	1	2	16
Foundation	1				1
Cooperative	1				1
∑	14	1	1	2	18

This audit firm is recorded as statutory auditor for 11 deleted entities. These are not included in the table above.

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
Bug Bounty Switzerland AG	CHE-218.065.572	Luzern	17.07.2023	First auditor	Thun
Brunello Gastro AG	CHE-253.292.658	Stettlen	01.06.2021	First auditor	Thun
Grimm + Ruchti Treuhand AG	CHE-108.127.260	Burgdorf	28.12.2020	Auditor switch	Thun
AriesLibra AG	CHE-102.394.087	Zug	04.10.2019	Auditor switch	Thun
CMM Holding AG	CHE-109.860.759	Zug	04.10.2019	Auditor switch	Thun

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
Wohnbaugenossenschaft Schwäbis	CHE-101.774.582	Steffisburg	09.01.2026	Auditor switch	Thun
Genossenschaft Alterssiedlung Signau	CHE-103.642.201	Signau	11.11.2025	Auditor switch	Thun
COMVATION AG	CHE-110.473.926	Thun	03.11.2025	Auditor switch	Thun
Humbel AG Kaffeemaschinen	CHE-113.305.076	Wattenwil	24.10.2025	Auditor switch	Thun
WELIO Stiftung	CHE-223.264.373	Sigriswil	07.07.2023	Auditor switch	Thun