The Global Tax Expenditures Database (GTED) has been a collective endeavour and we are grateful for the advice, comments and inputs provided by so many colleagues. Some of them have accompanied the project from the very beginning. Tom Neubig, a Senior Associate with CEP, who is also the author of Chapter 6 of this report, has been a constant source of support over the years. Byung Jeon from the Korean Institute of Public Finance (KIPF) was one of the initial drivers of the project and helped to access information from several Asian countries. Mario Mansour (IMF) has taken a keen interest in the GTED early on and provided valuable inputs at several stages.

Tom, Byung and Mario are also members of the GTED Advisory Group that has been an important sounding board during the process and helped us to sort out several tricky questions. The other members of the group are (in alphabetical order) Jean François Brun (CERDI, Université Clermont Auvergne), Santiago Diaz de Sarralde (CIAT), Sanjeev Gupta (CGDEV), Tibor Hanappi (OECD), Sebastian James (World Bank), Nora Lustig (CEQ, Tulane University), Nara Monkam (ATAF), Grégoire Rota-Graziosi (CERDI, Université Clermont Auvergne), and Ronald Steenblik (IISD). We have greatly benefitted from their expertise.