Conditions for Optimality of a Currency Area

George Demopoulos () and Nicholas Yannacopoulos

Open Economies Review, 1999, vol. 10, issue 3, 289-303

Abstract: Two approaches to the theory of OCA are distinguished in this paper. The first, called the marginalistic approach, attempts to define the OCA from the point of view of a single country, and the second examines the optimality of a currency area of a given membership. The marginalistic approach and its limitations are discussed first. Then, the paper proceeds to the second approach which is discussed in the context of the cooperative game theory in characteristic function form; it argues that a currency area is optimal when the welfare functions of its constituent members are in the core. This implies that the welfare functions of all constituent members of the currency area are maximized and hence they are all better off with a common currency rather than with their own national currencies; hence, no member country has the intention to abandon the currency area. The paper concludes that the condition for the optimality of a currency area independently of the degree of economic similarity of its constituents requires that the characteristic function must exhibit non decreasing returns with respect to its size. Copyright Kluwer Academic Publishers 1999

Keywords: optimum currency areas; cooperative game theory; european monetary union; monetary reform (search for similar items in EconPapers)
Date: 1999
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Citations: View citations in EconPapers (2)

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DOI: 10.1023/A:1008308203536

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