I am Professor of Economics and Director of the Center for Economic Behavior and Inequality (CEBI) at the University of Copenhagen. I serve as Area Director of Public Economics in the CESifo network, Vice President of the International Institute of Public Finance, and was a co-editor of the Journal of Public Economics from 2014 to 2020. Most of my research centers on Public Economics and includes studies on inequality in income, wealth and health, optimal tax and transfer policy and behavioral responses to public policy. I gave the Richard Musgrave Lecture 2020 where I talked about the role of behavior for inequality and public policy. I have practical policy experience from being member of the Danish 2008-2009 Tax Commission, co-chair of the Danish Economic Council (vismand) 2010-2014, member of the Expert Commission on the Design of a Green Tax Reform 2022-2024, chair of the Expert Commission on Reforming the Danish Active Labor Market Policy 2023-2024, and member of the Danish Competition Council since 2025.