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Self-Validating Optimum Currency Areas

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  • Giancarlo Corsetti
  • Paolo Pesenti

Abstract

In this paper we show that 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. This is because profit-maximizing producers in a currency area adopt endogenous pricing strategies that make exchange rate fluctuations highly costly in welfare terms. In our model exporters choose the degree of exchange rate pass-through onto export prices given monetary policy rules, and monetary authorities choose optimal policy rules taking firms' pass-through as given. We show that there exist two equilibria, which define two self-validating currency regimes. In the first, firms preset prices in domestic currency only, and let foreign-currency prices to be determined by the law of one price. Optimal policy rules then target the domestic output gap and floating exchange rates support the flex-price allocation. In the second equilibrium firms optimally preset prices in local currency, and a monetary union is the optimal policy choice for all countries. Although business cycles are more synchronized with a common currency, flexible exchange rates are superior in terms of welfare.

Suggested Citation

  • Giancarlo Corsetti & Paolo Pesenti, 2002. "Self-Validating Optimum Currency Areas," NBER Working Papers 8783, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:8783
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    More about this item

    JEL classification:

    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • F4 - International Economics - - Macroeconomic Aspects of International Trade and Finance

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