Gianmarco Monsellato

Senior Partner, Gianmarco advises major French and international groups in tax governance.


Senior Partner, Gianmarco Monsellato was the CEO of Deloitte | Taj from 2004 to 2016 and a member of Deloitte’s global leadership from 2014 to 2019. Since 2017, he is in charge of Deloitte’s European tax policy center, discussing with public decision-makers of the EU on the economic and societal challenges of taxation. Gianmarco advises leading French companies in setting up and managing their global tax policies and defends international companies regarding their French tax controversy issues. Gianmarco is acknowledged as a thought leader on tax governance and has been consulted several times by the French government. He published books and articles in France, Japan, the United Kingdom, the United States and Switzerland. In addition, he assumes the global responsibility for some of his major clients in all relationships with Deloitte. He is the Chairman of the French tax committee of the International Chamber of Commerce, a member of the International Fiscal Association and of the European American Chamber of Commerce. He is also a board member of Fedora, the European federation of Opera houses, and President of the Friends of Aubusson Tapestry. He received in 2013 the United Nations’ Women Empowerment Principles Award saluting his exceptional championship of gender diversity in the work place.

+33 1 55 61 63 46


  • Attorney at the Hauts-de-Seine’s Bar - 1995
  • Graduated from HEC business school - Paris -1990


  • French
  • English
  • Spanish
  • Italian


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