CORPTAX aims to establish how much multinational corporations pay in taxes, to what extent these taxes are paid in tax havens, and which factors drive these patterns. Ultimately, it aims to use theoretical, methodological and empirical innovations to transform the understanding of corporate taxation in a globalised world. The five-year-long project was launched in January 2021 and is funded by the Czech Science Foundation (21-05547M). CORPTAX is based at the Institute of Economic Studies, Faculty of Social Sciences, Charles University, Prague, Czechia.