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An Equilibrium Theory of Nominal Exchange Rates

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  • Hagedorn, Marcus

Abstract

This paper proposes an equilibrium theory of nominal exchange rates, which offers a new perspective on various issues in open economy macroeconomics. The nominal exchange rate and portfolio choices are jointly determined in equilibrium, thus providing a new approach to overcoming the indeterminacy results in Kareken and Wallace (1981). The distinctive features of this theory are that the nominal exchange rate is determined in international financial markets, that the risk premium and UIP deviations are fully endogenous equilibrium objects and that the real exchange rate inherits its properties from the nominal exchange rate. In terms of policy, this novel theory implies that a country with an exchange rate peg and free asset mobility faces a tetralemma and not a trilemma, because it loses not only monetary policy independence but also fiscal policy independence.

Suggested Citation

  • Hagedorn, Marcus, 2021. "An Equilibrium Theory of Nominal Exchange Rates," CEPR Discussion Papers 16517, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:16517
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    JEL classification:

    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E62 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Fiscal Policy; Modern Monetary Theory
    • E63 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Comparative or Joint Analysis of Fiscal and Monetary Policy; Stabilization; Treasury Policy

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