Income Taxation and Ability Rank

A substantial body of empirical and theoretical research suggests that individuals care about, and derive instrumental benefits from, their rank in society. This paper extends the Mirrleesian model of optimal income taxation to a framework where individuals derive utility from their perceived ability rank. Such concerns generate externalities that tend to increase the optimal marginal tax rates for both corrective and redistributive reasons. While empirical evidence on the magnitude of these concerns is limited, their potential impact on optimal income taxation could be substantial, with top marginal income tax rates potentially exceeding 90%.