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Currency Misalignments and Optimal Monetary Policy: A Reexamination

  • Charles Engel

This paper examines optimal monetary policy in an open-economy two-country model with sticky prices. We show that currency misalignments are inefficient and lower world welfare. We find that optimal policy must target not only inflation and the output gap, but also the currency misalignment. However the interest rate reaction function that supports this targeting rule may involve only the CPI inflation rate. This result illustrates how examination of "instrument rules" may hide important trade-offs facing policymakers that are incorporated in "targeting rules". The model is a modified version of Clarida, Gali, and Gertler's (JME, 2002). The key change is that we allow pricing to market or local-currency pricing and consider the policy implications of currency misalignments. Besides highlighting the importance of the currency misalignment, our model also gives a rationale for targeting CPI, rather than PPI, inflation.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 14829.

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Date of creation: Apr 2009
Date of revision:
Publication status: published as Charles Engel, 2011. "Currency Misalignments and Optimal Monetary Policy: A Reexamination," American Economic Review, American Economic Association, vol. 101(6), pages 2796-2822, October.
Handle: RePEc:nbr:nberwo:14829
Note: IFM ME
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  1. Aoki, Kosuke, 2001. "Optimal monetary policy responses to relative-price changes," Journal of Monetary Economics, Elsevier, vol. 48(1), pages 55-80, August.
  2. Charles Engel, 1995. "Accounting for U.S. Real Exchange Rate Changes," NBER Working Papers 5394, National Bureau of Economic Research, Inc.
  3. Leitemo, Kai & Soderstrom, Ulf, 2005. "Simple monetary policy rules and exchange rate uncertainty," Journal of International Money and Finance, Elsevier, vol. 24(3), pages 481-507, April.
  4. Benigno, Gianluca, 2004. "Real exchange rate persistence and monetary policy rules," Journal of Monetary Economics, Elsevier, vol. 51(3), pages 473-502, April.
  5. Sutherland, Alan, 2002. "Incomplete Pass-Through and the Welfare Effects of Exchange Rate Variability," CEPR Discussion Papers 3431, C.E.P.R. Discussion Papers.
  6. Svensson, Lars E. O., 1999. "Inflation targeting as a monetary policy rule," Journal of Monetary Economics, Elsevier, vol. 43(3), pages 607-654, June.
  7. Kollmann, Robert, 2002. "Monetary policy rules in the open economy: effects on welfare and business cycles," Journal of Monetary Economics, Elsevier, vol. 49(5), pages 989-1015, July.
  8. Evi Pappa, 2004. "Do the ECB and the Fed really need to cooperate? Optimal monetary policy in a two-country world," LSE Research Online Documents on Economics 512, London School of Economics and Political Science, LSE Library.
  9. Adolfson, Malin & Laseén, Stefan & Lindé, Jesper & Svensson, Lars E.O., 2009. "Monetary Policy Trade-Offs in an Estimated Open-Economy DSGE Model," Working Paper Series 232, Sveriges Riksbank (Central Bank of Sweden).
  10. Christopher J. Erceg & Dale W. Henderson & Andrew T. Levin, 1999. "Optimal monetary policy with staggered wage and price contracts," International Finance Discussion Papers 640, Board of Governors of the Federal Reserve System (U.S.).
  11. Gianluca Benigno & Pierpaolo Benigno, 2003. "Price Stability in Open Economies," Review of Economic Studies, Oxford University Press, vol. 70(4), pages 743-764.
  12. Clarida, Richard & Galí, Jordi & Gertler, Mark, 2002. "A Simple Framework for International Monetary Policy Analysis," CEPR Discussion Papers 3355, C.E.P.R. Discussion Papers.
  13. Michael B. Devereux & Charles Engel, 2003. "Monetary Policy in the Open Economy Revisited: Price Setting and Exchange-Rate Flexibility," Review of Economic Studies, Oxford University Press, vol. 70(4), pages 765-783.
  14. Smets, Frank & Wouters, Raf, 2002. "Openness, imperfect exchange rate pass-through and monetary policy," Journal of Monetary Economics, Elsevier, vol. 49(5), pages 947-981, July.
  15. Cambell Leith & Simon Wren-Lewis, 2006. " The Optimal Monetary Policy Response to Exchange Rate Misalignments," CDMA Conference Paper Series 0605, Centre for Dynamic Macroeconomic Analysis.
  16. Günter Coenen & Giovanni Lombardo & Frank Smets & Roland Straub, 2007. "International Transmission and Monetary Policy Cooperation," NBER Chapters, in: International Dimensions of Monetary Policy, pages 157-192 National Bureau of Economic Research, Inc.
  17. Benigno, Gianluca & Benigno, Pierpaolo, 2003. "Designing targeting rules for international monetary policy cooperation," Working Paper Series 0279, European Central Bank.
  18. Lars E.O. Svensson, 2002. "Inflation Targeting: Should It Be Modeled as an Instrument Rule or a Targeting Rule?," NBER Working Papers 8925, National Bureau of Economic Research, Inc.
  19. Bianca De Paoli, 2004. "Monetary Policy and Welfare in a Small Open Economy," CEP Discussion Papers dp0639, Centre for Economic Performance, LSE.
  20. Nooman Rebei & Steven Ambler & Ali Dib, 2004. "Optimal Taylor Rules in an Estimated Model of a Small Open Economy," Econometric Society 2004 North American Summer Meetings 627, Econometric Society.
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  23. Wang, Jian, 2007. "Home bias, exchange rate disconnect, and optimal exchange rate policy," Working Papers 0701, Federal Reserve Bank of Dallas.
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