With heterogeneity in both skills and discount factors, the Atkinson- Stiglitz theorem that savings should not be taxed does not hold. In a model with heterogeneity of preferences at each earnings level, introducing a savings tax on high earners or a savings subsidy on low earners increases...

This paper estimates the effect of tax incentives for charitable contributions in France. We focus on two reforms that increased the nonrefundable tax credit rate for charitable contributions by 32 percent. We use a difference-in-difference identification, comparing the evolution of...