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Attorneys and Tax Advisors
Florin Gass
Swiss Certified Fiduciary Expert

Florin Gass has many years of experience, both in national and international fiduciary and tax matters. He is recognized for his salary and social security expertise, as well as succession and tax planning. His main activities include advising on and implementing tax matters for individuals and legal entities, drawing up financial statements and devising modern accounting solutions, as well as counsel on business and financial aspects.


2018Partner KSF AG, Head of Uster branch
2016CAS Social Security Law for Corporate Practice
2011BDO AG, Uster, Head of Zürcher Oberland and Fiduciary Responsibility branch
2009BDO AG, Wetzikon, Fiduciary Team Manager
2008Tip Management AG, Zurich, Project Lead MIS in Healthcare
2006Swiss Certified Fiduciary Expert
2003BDO AG, Zurich, Fiduciary Mandate Manager 
2002Certification as Fiduciary Professional 
1995Commercial Fiduciary Apprenticeship at BDO AG, Zürich


German, English

Professional Groups

Private individuals

Entrepreneurs and legal entities

Corporation law, Restructuring

Marriage and inheritance law, estate planning

Execution of wills

Accounting / Value added tax / Annual report consulting

Processing of wages and social security



T +41 (0) 44 254 60 90

F +41 (0) 44 254 60 61


Künzli Sommer Frey AG

Aathalstrasse 34

CH-8610 Uster