Photo of Sarah Busca Bonvin

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.

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 a 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.

She joined CMS in 2017.

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  • 2006 - Diplôme d’expertise fiscale
  • 1999 - Brevet d’avocat, Barreau de Genève
  • 1994 - Licence en droit, Université de Genève
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  • Comité de l’IFA (International Fiscal Association) Suisse
  • Conseil de Fondation de l’Association Partage à Genève
  • Elle enseigne régulièrement dans le cadre du LLM Tax à Genève sur le thème de l’assujettissement des personnes morales et les prix de transfert
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Lectures list

  • CMS Talks | 5 perspectives sur le trust (nov. 2018)
  • Aperçu de la mise en oeuvre de la RFFA par les cantons, International Fiscal Association (IFA) Suisse (nov. 2018)

  • Spontaneous Exchange of rulings – The post-BEPS World, University of Lausanne (oct. 2016)
  • Réforme de l’imposition des entreprises III, Expertsuisse, Lausanne (Sept. 2016)
  • Actualités fiscales organisé par l’Ordre romand des experts fiscaux (OREF), l’Ordre genevois de la Chambre fiduciaire (OGCF) et Fiduciaire suisse, Genève (Mars 2016)
  • Le step-up, International Fiscal Association, Berne (Nov. 2015)
  • Corporate tax reform III – The proposed measures from a cantonal perspective, Steuerkonferenz, Hochschule, Lucerne
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20 Nov 18
CMS Talks | 5 per­spect­ives on trusts