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The Optimal Monetary Policy Response to Exchange Rate Misalignments

  • Cambell Leith


  • Simon Wren-Lewis


A common feature of exchange rate misalignments is that they produce a divergence between traded and non-traded goods sectors, which appears to pose a dilemma for policy makers. In this paper we develop a small open economy model which features traded and non-traded goods sectors with which to assess the extent to which monetary policy should respond to exchange rate misalignments. To do so we initially contrast the efficient outcome of the model with that under flexible prices and find that the flex price equilibrium exhibits an excessive exchange rate appreciation in the face of a positive UIP shock. By introducing sticky prices in both sectors we provide a role for policy in the face of UIP shocks. We then derive a quadratic approximation to welfare which comprises quadratic terms in the output gaps in both sectors as well as sectoral rates of inflation. These can be rewritten in terms of the usual aggregate variables, but only after including terms in relative sectoral prices and/or the terms of trade to capture the sectoral composition of aggregates. We derive optimal policy analytically before giving numerical examples of the optimal response to UIP shocks. Finally, we contrast the optimal policy with a number of alternative policy stances and assess the robustness of results to changes in model parameters.

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Paper provided by Centre for Dynamic Macroeconomic Analysis in its series CDMA Conference Paper Series with number 0605.

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Date of creation: Sep 2006
Date of revision:
Handle: RePEc:san:cdmacp:0605
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  1. Galí, Jordi & Monacelli, Tommaso, 2002. "Monetary Policy and Exchange Rate Volatility in a Small Open Economy," CEPR Discussion Papers 3346, C.E.P.R. Discussion Papers.
  2. Gianluca Benigno & Christoph Theonissen, 2006. "Consumption and real exchange rates with incomplete markets and non-traded goods," LSE Research Online Documents on Economics 3758, London School of Economics and Political Science, LSE Library.
  3. Corsetti, Giancarlo & Pesenti, Paolo, 2002. "International Dimensions of Optimal Monetary Policy," CEPR Discussion Papers 3349, C.E.P.R. Discussion Papers.
  4. Giancarlo Corsetti & Luca Dedola & Sylvain Leduc, 2008. "International Risk Sharing and the Transmission of Productivity Shocks," Review of Economic Studies, Oxford University Press, vol. 75(2), pages 443-473.
  5. Campbell Leith & Jim Malley, . "A Sectoral Analysis of Price-Setting Behavior in US Manufacturing Industries," Working Papers 2003_7, Business School - Economics, University of Glasgow, revised May 2003.
  6. Robert Kollmann, 2005. "Macroeconomic effects of nominal exchange rate regimes: new insights into the role of price dynamics," ULB Institutional Repository 2013/7624, ULB -- Universite Libre de Bruxelles.
  7. Jian Wang, 2007. "Home bias, exchange rate disconnect, and optimal exchange rate policy," Working Papers 0701, Federal Reserve Bank of Dallas.
  8. Julio J. Rotemberg & Michael Woodford, 1998. "Interest-Rate Rules in an Estimated Sticky Price Model," NBER Working Papers 6618, National Bureau of Economic Research, Inc.
  9. Campbell Leith & Simon Wren-Lewis, 2006. "The Costs of Fiscal Inflexibility - Extended," Working Papers 2005_23, Business School - Economics, University of Glasgow.
  10. Kollmann, Robert, 2002. "Monetary Policy Rules in the Open Economy: Effects on Welfare and Business Cycles," CEPR Discussion Papers 3279, C.E.P.R. Discussion Papers.
  11. Bergin, Paul R., 2006. "How well can the New Open Economy Macroeconomics explain the exchange rate and current account?," Journal of International Money and Finance, Elsevier, vol. 25(5), pages 675-701, August.
  12. Nooman Rebei & Eva Ortega, 2005. "A Two Sector Small Open Economy Model. Which Inflation to Target?," Computing in Economics and Finance 2005 298, Society for Computational Economics.
  13. Lane, Philip R., 1999. "The New Open Economy Macroeconomics: a Survey," CEPR Discussion Papers 2115, C.E.P.R. Discussion Papers.
  14. Ben S. Bernanke & Mark Gertler, 1999. "Monetary policy and asset price volatility," Economic Review, Federal Reserve Bank of Kansas City, issue Q IV, pages 17-51.
  15. Dupor, Bill, 2005. "Stabilizing non-fundamental asset price movements under discretion and limited information," Journal of Monetary Economics, Elsevier, vol. 52(4), pages 727-747, May.
  16. Bennett T. McCallum & Edward Nelson, 2001. "Monetary Policy for an Open Economy: An Alternative Framework with Optimizing Agents and Sticky Prices," NBER Working Papers 8175, National Bureau of Economic Research, Inc.
  17. Tatiana Kirsanova & Campbell Leith & Simon Wren-Lewis, 2006. "Should Central Banks Target Consumer Prices or the Exchange Rate?," Economic Journal, Royal Economic Society, vol. 116(512), pages F208-F231, 06.
  18. Riccardo Cristadoro & Andrea Gerali & Stefano Neri & Massimiliano Pisani, 2006. "Nominal Rigidities in an Estimated Two Country," Computing in Economics and Finance 2006 162, Society for Computational Economics.
  19. Richard Clarida & Jordi Gali & Mark Gertler, 2001. "Optimal Monetary Policy in Closed versus Open Economies: An Integrated Approach," NBER Working Papers 8604, National Bureau of Economic Research, Inc.
  20. Jordi Gali & Tommaso Monacelli, 2005. "Optimal fiscal policy in a monetary union," Proceedings, Federal Reserve Bank of San Francisco.
  21. David Bowman & Brian M. Doyle, 2003. "New Keynesian, open-economy models and their implications for monetary policy," International Finance Discussion Papers 762, Board of Governors of the Federal Reserve System (U.S.).
  22. Campbell Leith & Simon Wren-lewis, 2006. "The Costs of Fiscal Inflexibility," WEF Working Papers 0005, ESRC World Economy and Finance Research Programme, Birkbeck, University of London.
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