The paper studies optimal income taxation in a model with labor supply responses at the intensive and the extensive margin. It is shown that a utilitarian desire for redistribution does not pin down the sign of the optimal marginal tax rate: labor supply may be downward distorted, undistorted,...

Using VAR analysis on US data, we show that unanticipated fiscal expansions boost private consumption and business formation. Models with an extensive investment margin, i.e. endogenous firm and product entry, have difficulties explaining these two phenomena simultaneously. Considering different...