We add learning-by-doing to firms technology in an imperfectly competitive Ramsey model and study optimal interest rate. Our main result is that the Ramsey allocation features an inverse relationship between optimal nominal interest rate and the degree of learning rate. We show that a...

We add learning-by-doing to firms technology in an imperfectly competitive Ramsey model and study optimal interest rate. Our main result is that the Ramsey allocation features an inverse relationship between optimal nominal interest rate and the degree of learning rate. We show that a...

We study optimal tax policies in a life-cycle economy with risky human capital and permanent ability differences, where both ability and learning effort are private information of the agents. The optimal policies balance several goals: redistribution across agents, insurance against human...

Aiyagari (1995) showed that long-run optimal fiscal policy features a positive tax rate on capital income in Bewley-type economies with heterogeneous agents and incomplete markets. However, determining the magnitude of the optimal capital income tax rate was considered to be prohibitively...

Standard models of tax evasion implicitly assume that evasion is either fully detected, or not detected at all. Empirically, this is not the case, casting into doubt the traditional rationales for interior evasion choices. I propose two alternative, dynamic explanations for interior tax evasion...

In this paper we examine the optimal taxation problem in a two sector economy with heterogeneous agents. We show that in a steady state of this economy the optimal capital income tax rate can be different from zero. In this economy since capital and labour margins are interdependent, any...

This paper studies the optimal taxation between luxury and necessity goods. We set up a three-production-sector neoclassical growth model with inelastic labor supply, and analyze the tax incidence. We find that the two consumption taxes are neutral to economic growth and that the welfare...

The effects of distortional fiscal policies are studied within a model in which there is endogenous investment-specific technological change. Labor is used in the production of output and also for research purposes. Labor or capital taxes then distort the trade-off between developing new...

In this paper we examine the optimal taxation problem in a two sector economy with heterogeneous agents. We show that in a steady state of this economy the optimal capital income tax rate can be different from zero. In this economy since capital and labour margins are interdependent, any...