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Attorneys and Tax Advisors
Kathrin Guyer
Swiss Certified Tax Expert

Kathrin Guyer advises clients on domestic and cross-border tax and tax procedural law.  She serves as counsel to private individuals and companies in tax planning and represents them in negotiations as well as in proceedings before tax authorities. She further advises private individuals in inheritance matters such as the drawing up of wills and inheritance contracts.


2018Swiss Certified Tax Expert
2018Attorney at KSF AG 
2015Tax Consultant, Ernst & Young AG, Zürich
2014Admission to the Bar
2012Legal trainee at a corporate law firm in Zurich
2010University of Lucerne (MLaw)
2008ZHAW School of Management and Law (BSc in Business Law)


German, English


All Swiss courts of law

Professional Groups

Private individuals

Legal and litigative representation before tax authorities and courts

Corporation law

Inheritance law and estate planning


International Fiscal Association Switzerland


T +41 (0) 44 254 60 60

F +41 (0) 44 254 60 61


Künzli Sommer Frey AG

Mühlebachstrasse 20

CH-8032 Zürich