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Sarah Busca Bonvin

Certified Tax Expert

CMS von Erlach Poncet Ltd.
Rue Bovy-Lysberg 2
P.O. Box 5824
1211 Geneva 11
Languages French, English, Italian

Sarah Busca Bonvin is a lawyer and tax expert specialised in both corporate and individual tax law. Together with M. Andrio Orler, she is responsible for CMS’ tax department in Geneva, which she joined in 2017.

She worked for 15 years in the Geneva tax administration as Director of the tax affairs where she was responsible for tax rulings before being appointed Deputy Director-General in 2010.This experience has given her significant breadth and depth of knowledge and practice in many areas of taxation.

Sarah Busca Bonvin is the President of the Geneva Section of the Tax Expert Association (OREF), as well as a board member of the Swiss branch committee of the IFA (International Fiscal Association) and she teaches specialised courses in corporate taxation and transfer pricing for the LL.M. Tax program at the University of Geneva.

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  • 2006 – Certified tax expert exam
  • 1999 – Bar exam
  • 1994 – Law degree, University of Geneva (Switzerland)
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  • President of the Geneva Section of the Tax Expert Association (OREF)
  • Board member of the Swiss branch of the IFA (International Fiscal Association)
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Lectures list

  • Post BEPS intellectual property taxation in Europe, CMS Tax Conference, Paris, January 31st 2019
  • CMS Talks | 5 perspectives sur le trust (fiscal aspects), Hôtel Mandarin Oriental, Geneva, November 20th 2018
  • Aperçu de la mise en oeuvre de la RFFA par les cantons, International Fiscal Association (IFA) Suisse, November 2018
  • Spontaneous Exchange of rulings – The post-BEPS World, University of Lausanne, October 2016
  • Réforme de l’imposition des entreprises III, Expertsuisse, Lausanne, September 2016
  • Actualités fiscales organisé par l’Ordre romand des experts fiscaux (OREF), l’Ordre genevois de la Chambre fiduciaire (OGCF) et Fiduciaire suisse, Genève, March 2016
  • Le step-up, International Fiscal Association, Berne, November 2015
  • Corporate tax reform III – The proposed measures from a cantonal perspective, Steuerkonferenz, Hochschule, Lucerne
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16 Apr 19
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