Audit Firms

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

Core Company Information

Company Name	Wiro Treuhand- und Revisionsgesellschaft AG
UID	CHE-101.919.047
Alternative / previous Names	Treuhand A. Willimann AG Luzern
Domicile	Luzern
Canton	LU
Legal Form	Limited corporation
Firm Inscription Date	22.11.1978

FAOA Information

FAOA ID	500658
RAB Permission	licensed audit expert
FAOA License	active (since 01.11.2007)
Link to FAOA website	View auditor profile at FAOA
Branch offices (0)	-
Membership in Associations	-
Number of auditors with permission	6 (4.00 audit engagements per employee on average)

Auditor Statistics

Average engagement duration: 11.9 years (max.: 27 years)

Total number of statutory audit engagements: 24 (Ranked #183 in Switzerland)

Change in number of audit engagements: - (since 31.12.2023), - (over the last 12 months)

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

	Basel Landschaft	Basel Stadt	Luzern	Solothurn	Zürich	∑
Limited corporation		1	11	2		14
Limited liability company	1		1			2
Foundation			2	1	3	6
Cooperative	1		1			2
∑	2	1	15	3	3	24

This audit firm is recorded as statutory auditor for 6 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
Beneficentia AG	CHE-107.905.428	Metzerlen-Mariastein	10.01.2024	Auditor switch	Luzern
Institut Thérèse von Lisieux	CHE-459.933.853	Luzern	10.11.2022	Auditor switch	Luzern
Reha Zentrum Graf GmbH	CHE-109.376.848	Luzern	03.06.2022	First auditor	Luzern
Renée Spalinger-Stiftung	CHE-364.028.480	Zürich	29.11.2021	First auditor	Luzern
jdcentral AG	CHE-429.397.766	Hitzkirch	03.12.2020	Auditor switch	Luzern

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
Garage Limacher AG	CHE-326.601.674	Horw	09.01.2024	Opting-out	Luzern
Zahnarzt Team Luzern - Praxis Dr. Schulte AG	CHE-429.644.723	Luzern	15.02.2022	Auditor switch	Luzern
Hotel 3 Könige & Post AG	CHE-112.271.233	Andermatt	31.01.2022	Auditor switch	Luzern
M. & S. Limacher AG	CHE-108.157.640	Horw	19.02.2021	Opting-out	Luzern
Vaglio Linde AG in Liquidation	CHE-114.573.923	Luzern	17.08.2020	Opting-out	Luzern