This aims to provide a perspective on the ideal tax system, using insights from optimal-tax theory supplemented with empirical evidence. These insights are applied to actual policy questions regarding the progressiveness of the labor-income tax, in-work tax credits, the design of the...

We apply theories of capital-market failure to analyze optimal financing of risky higher education. In the market solution, students can only finance theireducation through debt. There is underinvestment in human capital because some students with socially profitable investments in human capital...