A currency area can be a self-validating optimal policy regime, even when monetary unification does not foster real economic integration and intra-industry trade. In our model, firms choose the optimal degree of exchange rate pass-through to export prices while accounting for expected monetary...

This paper provides an introduction to the recent literature on macroeconomic stabilization in closed and open economies. We present a stylized theoretical framework, illustrating its main properties with the help of an intuitive graphical apparatus. Among the issues we discuss are optimal...

We develop a baseline model of monetary and fiscal transmission in interdependent economies. The welfare effects of expansionary policies are related to monopolistic supply in production and monopoly power of a country in trade. An unanticipated exchange rate depreciation can be beggar-thyself...

What can be learnt from revisiting the Optimal Currency Areas (OCA) theory 50 years from its birth, in light of recent advances in open economy macro and monetary theory? This paper presents a stylized micro-founded model of the costs of adopting a common currency, relative to an ideal benchmark...

A central puzzle in international finance is that real exchange rates are volatile and, in stark contradiction to e.cient risk-sharing, negatively correlated with relative consumptions across countries. This paper shows that a model with incomplete markets and a low price elasticity of tradables...

This paper builds a baseline two-country model of real and monetary transmission in the presence of optimal international price discrimination by firms. Distributing traded goods to consumers requires nontradables, intensive in local labor. Because of distribution services, the price elasticity...

This paper analyzes optimal spending, tax and financial policies in models of endogenous growth where public spending is productive. We extend previous work in four directions. First, we analyze optimal policies when the government is allowed to borrow and lend, rather than being restricted to...

Do large investors increase the vulnerability of a country to speculative attacks in the foreign exchange markets? To address this issue, we build a model of currency crises where a single large investor and a continuum of small investors independently decide whether to attack a currency based...

In this paper we reconsider the trade-off between rules and discretion in fiscal policy in the presence of politically motivated fiscal deficits. We present a model of political bias in the budget process appropriately developed to allow for tax-smoothing-motivated deficits as well as for the...

In this paper, we study the co-movement of the government budget balance and the trade balance at business cycle frequencies. In a sample of 10 OECD countries we find that the correlation of the two time series is negative, but less so in more open economies. Moreover, for the US the...