When the government lacks the ability to commit to a tax policy over time, agents' involvement in imperfect financial markets can be welfare improving. Agents borrow against their promised income in markets that are incomplete in the sense that claims cannot be resold without loss. Taking these...

The contemporary version of the dynamic Ramsey problem omits expectations of a household’s initial lump-sum wealth taxation due to policy revision; therefore, the attainable resource allocation set in this problem is ill-defined. This omission leads to misleading conclusions about the optimal...

This paper explores the qualitative and quantitative implications of optimal taxation in a developing economy when economic growth is endogenously determined. We differentiate this class of economies from a developed economy in two aspects: informal sector is quantitatively significant and...

New restrictions on short-selling sovereign debt need to be supported by concrete evidence that links systematically unrestricted short-selling activities to fraud, abuse or market manipulation. OECD debt managers noted that there is plenty of empirical evidence on the benefits of short selling,...

This paper introduces an approach to the study of optimal government policy in economies characterized by a coordination problem and multiple equilibria. Such models are often criticized as not being useful for policy analysis because they fail to assign a unique prediction to each possible...

We study optimal fiscal policy in an economy where (i) search frictions create a coordination problem and generate multiple, Pareto-ranked equilibria and (ii) the government finances the provision of a public good by taxing market activity. The government must choose the tax rate before it knows...

This paper studies the optimal design of social insurance programs for disabled workers by developing and estimating an equilibrium labor search model with screening contracts. In the model, firms may strategically use employment contracts, consisting of wage and job amenities, to screen out the...

This note reviews May 2019 OECD framework agreement report, “OECD/G20 Inclusive Framework on BEPS: Progress Report July 2018-May 2019” on international taxation of the ‘digital economy'. The core conclusions of the review are:1. The framework agreement proposals to-date represent complex,...

The interest shown by policy makers and economists in the precautionary principle indicates the importance of model uncertainty in global warming policy. I show that through robust control, policy makers can implement the precautionary principle to regulate a stock pollutant, and I analyze its...