The monetary character of trade, use of a common medium of exchange, is shown to be an outcome of an economic general equilibrium. Monetary structure can be derived from price theory in a modified Arrow-Debreu model. Two constructs are added: transaction costs and market segmentation in trading posts (with a separate budget constraint at each transaction). Commodity money arises endogenously as the most liquid (lowest transaction cost) asset. Government-issued fiat money has a positive equilibrium value from its acceptability for tax payments. Scale economies in transaction cost account for uniqueness of the (fiat or commodity) money in equilibrium. Copyright Springer-Verlag Berlin Heidelberg 2003
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Michael B. Devereux & Shouyong Shi, 2008.
"Vehicle Currency,"
Working Papers
tecipa-315, University of Toronto, Department of Economics.
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