Denis Berdoz

Senior Counsel
Baker & McKenzie Geneva


Denis Berdoz mainly practices in the areas of tax and corporate law. He joined Baker McKenzie in 1982 and currently serves as head of the Firm’s Tax Practice Group in Geneva. Fluent in all aspects of tax law, Mr. Berdoz is regularly cited by top legal directories including Chambers, Legal 500 and European Legal Experts. He is a member of the International Fiscal Association, AGDA and Ordre Romand des Experts Fiscaux, and previously served as chairman of the Geneva Tax Appellate Commissions.

Denis Berdoz is also a lecturer at the Swiss Tax Expert Program of EXPERTsuisse and at the University of Geneva LLM Tax Program.

Practice Focus

Mr. Berdoz has more than 30 years of experience handling domestic corporate tax issues, inbound investments, tax treaties, post-acquisition and re-disposition restructurings, spinoffs and dispositions. He also handles restructurings — mergers, division and transformation — as well as M&A transactions. Mr. Berdoz’s clients include local and foreign multinational corporations.

Representative Legal Matters

  • Co-advised Weatherford on its redomestication to Switzerland.
  • Advised two listed groups on the Swiss legal aspect of their post merger integration.
  • Advised clients on various mutual agreements and APAs.

Professional Associations and Memberships

  • Geneva Bar Association
  • Swiss Bar Association


  • Geneva~Switzerland (1975)


  • University of Geneva (Licence en droit) (1975)
  • Calvin College (Matura) (1972)


  • English
  • French
  • German

Previous Offices

  • Chicago


Author, "Commentaire Romand" (commentary on the Federal Tax Act, code sections dealing with holding reduction), Ed. Florence Aubry Girardin, Helbling Lichtenhahn, Basel, 2nd. ed. 2017

Author, "La procédure mixte en matière d'impôts directs" (Co-authored with Marc Bugnon, Head of Principal Division of Federal Direct Tax, Withholding Tax and Stamp Tax of the Federal Tax Administration) in: Les procédures en droit fiscal, éd, OREF, Haupt, Bern, Stuttgart, Wien, 3rd ed. 2015

Author, "Modèle de Convention fiscale OCDE concernant le revenu et la fortune" Commentary (Danon / Gutmann/ Oberson/ Pistone (ed.), Helbling Lichtenhahn, Editions Francis Lefebvre 2013, co-authored commentary on article 5 on permanent establishments with Pierre-Yves Bourtourault and Marc Bénard (Baker & McKenzie Paris)


Co-speaker, "Swiss and International Tax Laws: Procedures,"  Séminaire OREF et Expert Suisse, November 2016

Co-speaker (with Elliott Murray, Baker McKenzie Geneva), "Tax Treatment of Multinational Successions Involving Switzerland and the USA," Séminaire OREF et Expert Suisse, September 2015

Speaker, "New Accounting law and acquisition of own shares," Séminaire Chambre des Experts en Finance et en Controlling, June 2014

Co-speaker (with Mrs Charlotte Climonet, head of legal department of the Geneva Tax administration), "Taxation and Appeal procedures," Séminaire ISIS, Novembre 2013

Co-speaker (with Professor Robert Danon), "Quasi-mergers, financial restructurings and up-stream mergers," Séminaire OREF, November 2013