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Which inflation to target? A small open economy with sticky wages indexed to past inflation

  • Alessia Campolmi

In a closed economy context there is common agreement on price inflation stabilization being one of the objects of monetary policy. Moving to an open economy context gives rise to the coexistence of two measures of inflation: domestic inflation (DI) and consumer price inflation (CPI). Which one of the two measures should be the target variable? This is the question addressed in this paper. In particular, I use a small open economy model to show that once sticky wages indexed to past CPI inflation are introduced, a complete inward looking monetary policy is no more optimal. I first, derive a loss function from a second order approximation of the utility function and then, I compute the fully optimal monetary policy under commitment. Then, I use the optimal monetary policy as a benchmark to compare the performance of different monetary policy rules. The main result is that once a positive degree of indexation is introduced in the model the rule performing better (among the Taylor type rules considered) is the one targeting wage inflation and CPI inflation. Moreover this rule delivers results very close to the one obtained under the fully optimal monetary policy with commitment.

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Paper provided by Department of Economics and Business, Universitat Pompeu Fabra in its series Economics Working Papers with number 961.

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Date of creation: Mar 2006
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Handle: RePEc:upf:upfgen:961
Contact details of provider: Web page: http://www.econ.upf.edu/

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  1. Ben S. Bernanke & Frederic S. Mishkin, 1997. "Inflation Targeting: A New Framework for Monetary Policy?," NBER Working Papers 5893, National Bureau of Economic Research, Inc.
  2. Jordi Gal� & Tommaso Monacelli, 2005. "Monetary Policy and Exchange Rate Volatility in a Small Open Economy," Review of Economic Studies, Oxford University Press, vol. 72(3), pages 707-734.
  3. Taylor, John B., 1993. "Discretion versus policy rules in practice," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 39(1), pages 195-214, December.
  4. Jordi Gali & Tommaso Monacelli, 2002. "Monetary Policy and Exchange Rate Volatility in a Small Open Economy," NBER Working Papers 8905, National Bureau of Economic Research, Inc.
  5. Giancarlo Corsetti & Paolo Pesenti, 1997. "Welfare and Macroeconomic Interdependence," NBER Working Papers 6307, National Bureau of Economic Research, Inc.
  6. Lawrence J. Christiano & Martin Eichenbaum & Charles L. Evans, 2005. "Nominal Rigidities and the Dynamic Effects of a Shock to Monetary Policy," Journal of Political Economy, University of Chicago Press, vol. 113(1), pages 1-45, February.
  7. Jordi Gali, 2002. "New Perspectives on Monetary Policy, Inflation, and the Business Cycle," NBER Working Papers 8767, National Bureau of Economic Research, Inc.
  8. repec:dgr:kubcen:199597 is not listed on IDEAS
  9. Smets, Frank & Wouters, Raf, 2002. "An estimated stochastic dynamic general equilibrium model of the euro area," Working Paper Series 0171, European Central Bank.
  10. Michael Woodford, 2001. "Inflation Stabilization and Welfare," NBER Working Papers 8071, National Bureau of Economic Research, Inc.
  11. Marc P. Giannoni & Michael Woodford, 2003. "Optimal Interest-Rate Rules: II. Applications," NBER Working Papers 9420, National Bureau of Economic Research, Inc.
  12. Frank Smets & Raf Wouters, 2003. "An Estimated Dynamic Stochastic General Equilibrium Model of the Euro Area," Journal of the European Economic Association, MIT Press, vol. 1(5), pages 1123-1175, 09.
  13. Svensson, Lars E.O., 1998. "Open-Economy Inflation Targeting," Seminar Papers 638, Stockholm University, Institute for International Economic Studies.
  14. Erceg, Christopher J. & Henderson, Dale W. & Levin, Andrew T., 2000. "Optimal monetary policy with staggered wage and price contracts," Journal of Monetary Economics, Elsevier, vol. 46(2), pages 281-313, October.
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