About us

Founded in 1980 by Frieda Wyrsch-Dettling who is certified Expert in Financial Accounting and Controlling (Swiss Federal Diploma) and member of the board. Mrs. Wyrsch-Dettling had been working for a US-American company as Chief Accountant for many years before she established Wyrsch Treuhand AG. Her many years of professional experience and expertise has laid a solid foundation for her later independence. 

Rolf Wyrsch-Yu joined the company in 1982. He is Managing Director of Wyrsch Treuhand AG and is certified Trustee with Swiss Federal Diploma, Mediator (IRP-HSG), and chairman of the board. Mr. Wyrsch was also an Adjunct Lecturer for Swiss Fiduciary School and had worked partially for many years. 

Dominik Klein, Account Manager and is certified Trustee with Swiss Federal Diploma. He has been working for the company since 2007.

We give the same attention to all clients, no matter how large or small. Our professionals combine practical knowledge with years of experience to provide a level of understanding and services. Our mission is to provide the support, objectivity and expertise businesses need to succeed within the context of an ever-changing business landscape.

Wyrsch Treuhand AG located in the Business Park of Wildbrunn. The community names Kaltbrunn/SG and is at the upper end of Lake Zurich, approx. 55 km southeast of Zurich Airport with a very convenient highway access. 

Wyrsch Treuhand AG is member of the Treuhand Suisse resp. the Swiss Fiduciary Association, the gateway to a group of organizations that provide a variety of professional services including accounting, auditing and tax advisory etc. Members are affiliated with nationwide 12 regional fiduciary sections who periodically organize the industry forums, as well as the professional seminars and a variety of vocational training sessions.