There is often a gap between the prescriptions of an "optimal" tax system and actual tax systems, some of which can be neither efficient economically nor efficient at redistributing income. With a focus on personal income taxes, this paper reviews the political economics literature on tax...

The international development debate is increasingly referring to the notion of the "social contract" - often, however, without a clear definition of the term and its implications. We therefore make a suggestion for measuring at least some elements of social contracts in order to make it easier...