The Atkinson-Stiglitz Theorem states that if labor is weakly separable from goods in household utility functions, differential commodity taxation should not be not part of an optimal redistributive tax system. This Theorem, which is arguable the most policy-relevant result to come out of the...

The paper provides a new formulation of the Mirrlees-Seade theo- rem on the positivity of the optimal marginal income tax, under weaker assumptions and in a more general model. The formulation of the the- orem is independent of whether the model involves finitely many types or a continuous type...

The paper provides a new proof of the positivity of the optimal marginal income tax, in a more general model, under weaker assumptions. The analysis focusses on the (weakly) relaxed problem in which upward incentive constraints are replaced by a monotonicity condition on consumption. Without...

This paper considers redistributive as well as political consequences of tax avoidance. When investing in tax avoidance is possible, the official tax rate does not necessarily correspond to what individuals actually pay in taxes. This affects both redistributive outcomes as well as individual's...

This paper explores whether more generous social spending polices in fact lead to less income inequality, or if redistributive outcomes are offset by behavioral disincentive effects. To account for the inherent endogeneity of social policies with regard to inequality levels, I apply the System...

This paper studies optimal linear income taxation and redistributive social insurance when the former has the traditional labor distortion and the latter generates both ex ante and ex post moral hazard. Private insurance is available and individuals differ in labor productivity and in loss...

Im Vorfeld der Bundestagswahl 2013 findet in Deutschland eine intensive Debatte über die Umverteilungswirkung der Einkommensteuer statt. Insbesondere mit der Senkung des Spitzensteuersatzes auf zwischenzeitlich 42 und nun 45 Prozent wird eine überproportionale Bevorzugung hoher Einkommen...