Slemrod, Joel B.; Kopczuk, Wojciech; Yitzhaki, Shlomo - 2021
An optimal linear world income tax that maximizes a border-neutral social welfare function provides a drastic reduction in world consumption inequality, dropping the Gini coefficient from 0.69 to 0.25. In contrast an optimal decentralized (i.e., within countries) redistribution has miniscule...
