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	Erwin Koller Wirtschaftsprüfung & Wirtschaftsberatung
UID	CHE-112.471.915
Alternative / previous Names	-
Domicile	Männedorf
Canton	ZH
Legal Form	Sole proprietorship
Firm Inscription Date	05.08.2005

FAOA Information

FAOA ID	500485
RAB Permission	licensed audit expert
FAOA License	active (since 17.10.2007)
Link to FAOA website	View auditor profile at FAOA
Branch offices (0)	-
Membership in Associations	-
Number of auditors with permission	1 (6.00 audit engagements per employee on average)

Auditor Statistics

Average engagement duration: 8.2 years (max.: 15.5 years)

Total number of statutory audit engagements: 6 (Ranked #204 in Switzerland)

Change in number of audit engagements: - (since 31.12.2023), +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.

This audit firm is recorded as statutory auditor for 2 deleted entities. These are not included in the table above.

Latest audit engagements

These are this auditor's latest audit engagements.

Client Name	Client UID	Domicile	Start Date	Type of switch	Auditor Branch
Vivtex GmbH	CHE-375.567.232	Zürich	09.08.2023	First auditor	Männedorf
Vision Group AG	CHE-390.145.890	Dietlikon	02.09.2021	Auditor switch	Männedorf
LENSVISION AG	CHE-311.825.325	Dübendorf	14.01.2021	Auditor switch	Männedorf
Vision Group Holding AG	CHE-381.617.631	Dietlikon	04.11.2020	First auditor	Männedorf
Goethe - Stiftung für Kunst und Wissenschaft	CHE-110.376.074	Zürich	22.07.2011	Auditor switch	Männedorf

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
LENSVISION AG	CHE-311.825.325	Dübendorf	05.07.2021	Opting-out	Männedorf