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Tax Partner Deloitte I Judge I Author & Speaker

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I am a tax partner at Deloitte Switzerland, leading the firm’s National Tax Office, and serve as a substitute judge at the Tax Appeals Court of the Canton of Zurich ("Steuerrekursgericht des Kantons Zürich"). I have more than 17 years of experience in Swiss and international tax matters and a proven track record of being at the forefront of international tax developments and analysing their impact from a Swiss tax technical perspective. I am a Swiss Certified Tax Expert ("dipl. Steuerexperte"). Prior to joining Deloitte, I worked for one of the other Big4 firms in Switzerland and was the Deputy Head Group Tax of Bank Julius Baer & Co. Ltd. for almost a decade. 

I am a regular speaker at national and international tax conferences and a lecturer in the Transfer Pricing Executive Programme at the University of Lausanne and the Tax Accounting & Reporting Certificate Course of EXPERTsuisse. I regularly publish on tax topics and have (co)-authored several books, including the first comprehensive book on transfer pricing in Switzerland and on tax accounting and reporting considering the OECD Model Rules.

I represent Deloitte Switzerland in the EXPERTsuisse tax group and in the Professional Affairs Committee of CFE Tax Advisers Europe, the leading organization of the tax advisers profession in Europe.

I am also an examiner for the Swiss Certified Tax Experts examinations and a member of EXPERTsuisse, - Swiss Association for Accounting and Controlling and the Swiss Association of Judges.

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"I was always amazed about his profound Swiss and international tax technical knowledge and his ability to explain complex issues in very simple words."


"Thomas is an exceptional talent in tax law with tremendous commitment. He is objective in his approach and resolution oriented. He communicates clearly and is very amicable."

Managing Director 

"Quick to identify problems in taxation, he is very effective at resolving them"


"Thomas is an independent thinker with a strong skills-set in this area of expertise"

Managing Director 

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