NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

How Many Monies? A Genetic Approach to Finding Optimum Currency Areas

Atish R. Ghosh, Holger C. Wolf

NBER Working Paper No. 4805
Issued in July 1994
NBER Program(s):   IFM

Recent moves towards greater monetary integration in Western Europe - and disintegration in Eastern Europe and the former Soviet Union - have rekindled interest in the theoretical and empirical aspects of optimal currency areas (OCA). In this paper, we examine the marginal benefit of increasing the number of currency unions within a given geographical area. We look at six regions; the United States, Europe, the G7, the CFA zone, the FSU and the world at large. Our results suggest that (i) contiguous monetary unions are typically dominated by non-contiguous unions; (ii) neither Europe nor the United States form an optimum currency area, for both regions the costs of adopting a single currency exceeds estimates of the transaction cost savings; (iii) Germany and the United States will almost never find it to their (economic) advantage to join monetary unions.

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Document Object Identifier (DOI): 10.3386/w4805

Published: Published as "On the Mark(s): Optimum Currency Areas in Germany", EM, Vol. 13, no. 4 (October 1996): 561-573.

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