Stefanie Stantcheva is Professor of Economics at the Harvard Economics Department. She studies taxation, inequality, social economics and innovation. Stefanie uses models and data to understand how to design a better tax system, for instance to stimulate innovation and reduce inequality and runs large-scale social economics surveys and experiments to explore the determinants of our social preferences, attitudes, and perceptions. She received her Ph.D. in Economics from MIT in 2014 and was a junior fellow at the Harvard Society of Fellows between 2014 and 2016.  Since May 2018, Stefanie has been a member of the French Council of Economic Advisers (Conseil d’Analyse Economique). She is a co-editor of the Quarterly Journal of Economics.