updated as a function of the labor income and the previous balance.

We analytically and quantitatively examine a prominent justifi…cation for capital income taxation: goods preferred by those with high ability ought to be taxed. We study an environment where commodity taxes are allowed to be nonlinear functions of income and consumption and …find that, when...

This paper derives novel formulas for the welfare gains of any tax reform around initial (optimal or suboptimal) dynamic tax systems. We use a perturbation-based method to express these formulas in terms of easily interpretable and empirically estimable parameters: elasticities of income and...

We study the problem of optimal social insurance when agents are privately informed and the government cannot commit to a particular allocation. Contrary to the previous literature, we assume that agents' types have some persistence. We show that under some conditions it is optimal for the...

We study the constrained Pareto efficient allocations in a dynamic production economy in which the group that holds political power decides the allocation of resources. We show that Pareto efficient allocations take a quasi-Markovian structure and can be represented recursively as a function of...

Innovative activities have public good characteristics in the sense that the cost of producing the innovation is high compared to the cost of producing subsequent units. Moreover, knowledge of how to produce subsequent units is widely known once the innovation has occurred and is, therefore,...

This paper studies a Diamond-Dybvig model of providing insurance against unobservable liquidity shocks in the presence of unobservable trades. We show that competitive equilibria are inefficient. A social planner finds it beneficial to introduce a wedge between the interest rate implicit in...