VEHICLE CURRENCY

Michael Devereux and Shouyong Shi

International Economic Review, 2013, vol. 54, issue 1, 97-133

Abstract: Historically, the world economy has been dominated by a single currency accepted in the exchange of goods and assets among countries. In recent decades, the U.S. dollar has played this role. The dollar acts as a “vehicle currency” in the sense that agents in nondollar economies will generally engage in currency trade indirectly using the U.S. dollar instead of using direct bilateral trade among their own currencies. A vehicle currency is desirable when there are transactions costs of exchange. This article constructs a dynamic general equilibrium model of a vehicle currency. We explore the nature of the efficiency gains arising from a vehicle currency and show how it depends on the total number of currencies in existence, the size of the vehicle currency economy, and the monetary policy followed by the vehicle currency’s government. We find that there can be significant welfare gains to a vehicle currency in a system of many independent currencies. But these gains are asymmetrically weighted toward the residents of the vehicle currency country. The survival of a vehicle currency places natural limits on the monetary policy of the vehicle currency country.

Date: 2013
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https://doi.org/10.1111/j.1468-2354.2012.00727.x

Related works:
Working Paper: Vehicle currency (2008)
Working Paper: Vehicle Currency (2008)
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