@article {305366, title = {Optimal Taxation with Behavioral Agents}, journal = {American Economic Review}, year = {Forthcoming}, abstract = {This paper develops a theory of optimal taxation with behavioral agents. We\ use a general behavioral framework that encompasses a wide range of behavioral\ biases such as misperceptions, internalities and mental accounting. We revisit\ the three pillars of optimal taxation: Ramsey (linear commodity taxation to\ raise revenues and redistribute), Pigou (linear commodity taxation to correct\ externalities) and Mirrlees (nonlinear income taxation). We show how the\ canonical optimal tax formulas are modified and lead to a rich set of novel\ economic insights. We also show how to incorporate nudges in the optimal\ taxation frameworks, and jointly characterize optimal taxes and nudges. We\ explore the Diamond-Mirrlees productive efficiency result and the\ Atkinson-Stiglitz uniform commodity taxation proposition, and find that they\ are more likely to fail with behavioral agents.}, author = {Emmanuel Farhi and Xavier Gabaix} }