Reflections on the optimal currency area (OCA) criteria in the light of EMU

Optimal Currency Area (OCA) theory offers criteria for evaluating the optimality of monetary union arrangements. This paper reviews the use that has been made of these criteria in the specific context of European Monetary Union. It reviews the use of business cycle synchronization data and the data produced by SVAR analyses, which led to the 'core-periphery' distinction. It also reviews extensions of the criteria that have been proposed or generated in this context: in particular, the proposition that the criteria may be 'endogenous'. It presents Taylor rule estimates to check for inhomogeneities in Euro Area performance. The paper concludes that OCA criteria provide a useful starting point for evaluating monetary union options. Copyright © 2003 John Wiley & Sons, Ltd.