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Core Inflation and Monetary Policy

  • Nessén, Marianne


    (Research Department, Central Bank of Sweden)

  • Söderström, Ulf


    (Research Department, Central Bank of Sweden)

What are the implications of targeting different measures of inflation? We extend a basic theoretical framework of optimal monetary policy under inflation targeting to include several components of CPI inflation ratio, and analyze the implications of using different measures of inflation as target variable — core inflation, CPI excluding interest rates, and headline CPI inflation. Our main results are the following. (i) Barring the interest rate component, temporary shocks to inflation do not affect optimal monetary policy under any regime. (ii) Indirect (second-round) effects of disturbances on goal variables need to be accounted for properly. Simply excluding seemingly temporary disturbances from the reaction function risks leading to inappropriate policy responses. (iii) It may be optimal to respond to changes in one measure of inflation even if the target is defined in terms of another. (iv) The presence of the direct interest rate component in the CPI tends to push optimal monetary policy in an expansionary direction. The net effect, considering also the traditional channel, however, depends on the nature of the initial disturbance.

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Paper provided by Sveriges Riksbank (Central Bank of Sweden) in its series Working Paper Series with number 110.

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Length: 35 pages
Date of creation: 01 Jun 2000
Date of revision:
Publication status: Published in International Finance, 2001, pages 401-439.
Handle: RePEc:hhs:rbnkwp:0110
Contact details of provider: Postal: Sveriges Riksbank, SE-103 37 Stockholm, Sweden
Phone: 08 - 787 00 00
Fax: 08-21 05 31
Web page:

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  1. Laurence Ball, 1997. "Efficient Rules for Monetary Policy," NBER Working Papers 5952, National Bureau of Economic Research, Inc.
  2. Orphanides, Athanasios & Wieland, Volker, 1999. "Inflation zone targeting," Working Paper Series 0008, European Central Bank.
  3. Stephen G. Cecchetti, 1997. "Measuring short-run inflation for central bankers," Review, Federal Reserve Bank of St. Louis, issue May, pages 143-155.
  4. Clarida, R. & Gali, J. & Gertler, M., 1999. "The Science of Monetary Policy: A New Keynesian Perspective," Working Papers 99-13, C.V. Starr Center for Applied Economics, New York University.
  5. Andrew G. Haldane & Nicoletta Batini, 1998. "Forward-Looking Rules for Monetary Policy," NBER Working Papers 6543, National Bureau of Economic Research, Inc.
  6. Michael F. Bryan & Stephen G. Cecchetti, 1994. "Measuring Core Inflation," NBER Chapters, in: Monetary Policy, pages 195-219 National Bureau of Economic Research, Inc.
  7. Quah, Danny & Vahey, Shaun P, 1995. "Measuring Core Inflation?," Economic Journal, Royal Economic Society, vol. 105(432), pages 1130-44, September.
  8. Michael F. Bryan & Stephen G. Cecchetti & Rodney L. Wiggins II, 1997. "Efficient Inflation Estimation," NBER Working Papers 6183, National Bureau of Economic Research, Inc.
  9. Apel, Mikael & Jansson, Per, 1999. "A Parametric Approach for Estimating Core Inflation and Interpreting the Inflation Process," Working Paper Series 80, Sveriges Riksbank (Central Bank of Sweden).
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