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Optimal Policy When the Inflation Target is not Optimal


  • Sergio A. Lago Alves


I assess the optimal policy to be followed by a welfare-concerned central bank when assigned an inflation target that is not necessarily welfare-optimal. I treat the inflation target as the trend inflation and I have three main contributions: (i) a welfare-based loss function fully derived under trend inflation, showing how the non-optimal inflation target acts as an extra inefficiency source; (ii) I show that the trend inflation does affect the relative weight of the output gap: they are inversely related; (iii) under trend inflation, I derive time consistent optimal policies with both unconditional and timeless commitment, and I show how to translate the pursuit of the inflation target into an additional constraint in the minimization step.

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  • Sergio A. Lago Alves, 2012. "Optimal Policy When the Inflation Target is not Optimal," Working Papers Series 271, Central Bank of Brazil, Research Department.
  • Handle: RePEc:bcb:wpaper:271

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    References listed on IDEAS

    1. Peter J. Klenow & Oleksiy Kryvtsov, 2008. "State-Dependent or Time-Dependent Pricing: Does it Matter for Recent U.S. Inflation?," The Quarterly Journal of Economics, Oxford University Press, vol. 123(3), pages 863-904.
    2. Guido Ascari & Tiziano Ropele, 2009. "Trend Inflation, Taylor Principle, and Indeterminacy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 41(8), pages 1557-1584, December.
    3. Damjanovic, Tatiana & Damjanovic, Vladislav & Nolan, Charles, 2008. "Unconditionally optimal monetary policy," Journal of Monetary Economics, Elsevier, vol. 55(3), pages 491-500, April.
    4. Gill Hammond, 2012. "State of the art of inflation targeting," Handbooks, Centre for Central Banking Studies, Bank of England, edition 4, number 29.
    5. Sergio A. L. Alves & Waldyr D. Areosa, 2005. "Targets and Inflation Dynamics," Working Papers Series 100, Central Bank of Brazil, Research Department.
    6. Warne, Anders & Coenen, Günter & Christoffel, Kai, 2008. "The new area-wide model of the euro area: a micro-founded open-economy model for forecasting and policy analysis," Working Paper Series 944, European Central Bank.
    7. Klenow, Peter J. & Malin, Benjamin A., 2010. "Microeconomic Evidence on Price-Setting," Handbook of Monetary Economics,in: Benjamin M. Friedman & Michael Woodford (ed.), Handbook of Monetary Economics, edition 1, volume 3, chapter 6, pages 231-284 Elsevier.
    8. Ascari, Guido & Ropele, Tiziano, 2007. "Optimal monetary policy under low trend inflation," Journal of Monetary Economics, Elsevier, vol. 54(8), pages 2568-2583, November.
    9. Andrew T. Levin & Alexei Onatski & John Williams & Noah M. Williams, 2006. "Monetary Policy Under Uncertainty in Micro-Founded Macroeconometric Models," NBER Chapters,in: NBER Macroeconomics Annual 2005, Volume 20, pages 229-312 National Bureau of Economic Research, Inc.
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    11. Olivier Coibion & Yuriy Gorodnichenko, 2011. "Monetary Policy, Trend Inflation, and the Great Moderation: An Alternative Interpretation," American Economic Review, American Economic Association, vol. 101(1), pages 341-370, February.
    12. Stephen Murchison & Andrew Rennison, 2006. "ToTEM: The Bank of Canada's New Quarterly Projection Model," Technical Reports 97, Bank of Canada.
    13. Jensen, Christian & McCallum, Bennett T., 2002. "The non-optimality of proposed monetary policy rules under timeless perspective commitment," Economics Letters, Elsevier, vol. 77(2), pages 163-168, October.
    14. Tovar, Camilo Ernesto, 2009. "DSGE Models and Central Banks," Economics - The Open-Access, Open-Assessment E-Journal, Kiel Institute for the World Economy (IfW), vol. 3, pages 1-31.
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    18. Robert Amano & Steve Ambler & Nooman Rebei, 2007. "The Macroeconomic Effects of Nonzero Trend Inflation," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 39(7), pages 1821-1838, October.
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    Cited by:

    1. Nakata, Taisuke, 2014. "Welfare costs of shifting trend inflation," Journal of Macroeconomics, Elsevier, vol. 41(C), pages 66-78.
    2. Alves, Sergio Afonso Lago, 2014. "Lack of divine coincidence in New Keynesian models," Journal of Monetary Economics, Elsevier, vol. 67(C), pages 33-46.
    3. Guido Ascari & Argia M. Sbordone, 2014. "The Macroeconomics of Trend Inflation," Journal of Economic Literature, American Economic Association, vol. 52(3), pages 679-739, September.
    4. Sergio A. Lago Alves, 2012. "Trend Inflation and the Unemployment Volatility Puzzle," Working Papers Series 277, Central Bank of Brazil, Research Department.
    5. Carl E. Walsh, 2011. "The Future of Inflation Targeting," The Economic Record, The Economic Society of Australia, vol. 87(s1), pages 23-36, September.

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