On the Political Economy of Income Taxation

The literatures dealing with voting, optimal income taxation, and implementation are integrated here to address the problem of voting over income taxes. In contrast with previous articles, general nonlinear income taxes that affect the labor-leisure decisions of consumers who work and vote are allowed. Uncertainty plays an important role in that the government does not know the true realizations of the abilities of consumers drawn from a known distribution. Even though the space of alternatives is infinite dimensional, conditions on tax requirements such that a majority rule equilibrium exists are found. Finally, conditions are found to assure existence of a majority rule equilibrium when agents vote over both a public good and income taxes to finance it.