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Optimal Monetary Policy and Exchange Rate Volatility in a Small Open Economy

Author

Listed:
  • Jordi Gali

    () (Universitat Pompeu Fabra)

  • Tommaso Monacelli

    () (Boston College)

Abstract

We lay out a tractable small open economy version of the canonical sticky price model, and use it as a framework to study the properties of three alternative monetary regimes: (a) optimal monetary policy, (b) a Taylor rule, and (c) an exchange rate peg. Several interesting results emerge from our analysis. First, the optimal policy is shown to entail a positive correlation between domestic and world interest rates. That doesn't prevent sizable fluctuations of nominal and real exchange rates from occurring, though the implied volatility of those variables is much smaller than the empirical one. Second, a Taylor rule generally leads to excess volatility of nominal variables, and excess smoothness of real variables, relative to the optimal policy. Finally, we show that a pure exchange rate peg causes the equilibrium to be indeterminate and may thus be a source of macroeconomic instability.

Suggested Citation

  • Jordi Gali & Tommaso Monacelli, 1999. "Optimal Monetary Policy and Exchange Rate Volatility in a Small Open Economy," Boston College Working Papers in Economics 438, Boston College Department of Economics, revised 15 Nov 1999.
  • Handle: RePEc:boc:bocoec:438
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    References listed on IDEAS

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    More about this item

    Keywords

    small open economy; optimal monetary policy; sticky prices; Taylor rule;
    All these keywords.

    JEL classification:

    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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