Over the last 40 years the US tax system went through striking changes that considerably reduced the progressivity of the system. This resulted in a dramatic reduction of effective tax rates on top income groups. This paper investigates the macroeconomic repercussions of this change in tax...

We compute the optimal non-linear tax policy in a dynastic economy with unin- surable risk, where generations are linked by dynastic wealth accumulation and corre- lated incomes. Unlike earlier studies, we find that the optimal tax policy is moderately regressive. Regressive taxes lead to higher...

In contrast to the very large literature on skill-biased technical change among workers, there is hardly any work on the importance of skills for the entrepreneurs who employ those workers, and in particular on their evolution over time. This paper proposes a simple theory of skill-biased change...

of exiting firms supports the model's conclusions.

Recent empirical research has documented the importance of shocks to firm- specific productivity, but has provided only limited evidence on their sources. This paper proposes and analyzes purposeful experimentation by firms as a source of such shocks and models industry dynamics in such a...