“…First, by allowing for endogenous wage rates, this paper contributes to a growing literature on optimal income tax and education policies; for earlier contributions, see, for example, Ulph (1977), Hare and Ulph (1979), Tuomala (1990), and Nielsen and Sørensen (1997). More recent contributions include Maldonado (2008), Alstadsaeter et al (2008), Grossman andPoutvaara (2009), andSchindler (2011). Second, a number of papers analyze optimal taxation if different skill types earn endogenously determined wages, and the government cannot tax or subsidize all production inputs at different rates.…”