%0 Report %A Jacquet, Laurence %A Lehmann, Etienne %A Linden, Bruno Van der %T Optimal Redistributive Taxation with Both Extensive and Intensive Responses %D 2010 %8 2010 Mar %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 4837 %U https://www.iza.org/publications/dp4837 %X This paper characterizes optimal income taxation when individuals respond along both the intensive and extensive margins. Individuals are heterogeneous across two dimensions: specifically, their skill and disutility of participation. Preferences over consumption and work effort can differ with respect to the level of skill, with only the Spence-Mirrlees condition imposed. Employing a tax perturbation approach, we derive an optimal tax formula that generalizes previous results by allowing for income effects and extensive margin responses. We provide a sufficient condition for optimal marginal tax rates to be nonnegative everywhere. We discuss the relevance of this condition with analytical examples and numerical simulations using U.S. data. %K optimal tax formula %K tax perturbation %K random participation