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The Elusive Welfare Economics of Price Stability as a Monetary Policy Objective: Should New Keynesian Central Bankers Pursue Price Stability?

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  • Willem H. Buiter

Abstract

The paper studies the inflation rate associated with optimal monetary policy in a standard suite of DSGE models, when fiscal policy is either unrestricted optimal or restricted but supportive of monetary policy. Full nominal price flexibility, nominal prices set one period in advance and Calvo-style staggered overlapping price contracts with a variety of indexation rules for constrained price setters are considered. For all price setting models, optimal monetary policy implements the Bailey-Friedman Optimal Quantity of Money (OQM) rule: the pecuniary opportunity cost of holding money is equal to zero. There is an optimal inflation rate for producer prices in the Calvo model, given by the 'core inflation' process generated by the indexation rule of the constrained price setters. It is constant only if core inflation is constant. A zero rate of producer price inflation is necessary for optimality in the Calvo model, only if all of the following conditions hold. (1) There is no money or the nominal interest rate on money can be set freely. (2) The constrained price setters of the Calvo model implement an ill-posed, arbitrary price indexation rule, such as the lagged partial indexation rule used by Woodford to make a case for price stability. (3) The authorities use neither their tax instruments nor the nominal interest rate to validate the core inflation process. These results are global - they do not depend on linear approximations at a deterministic, zero-inflation steady state.

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Bibliographic Info

Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 10848.

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Date of creation: Oct 2004
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Handle: RePEc:nbr:nberwo:10848

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  2. repec:nbr:nberre:0126 is not listed on IDEAS
  3. Buiter, Willem H, 2004. "Helicopter Money: Irredeemable Fiat Money and the Liquidity Trap," CEPR Discussion Papers 4202, C.E.P.R. Discussion Papers.
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  25. Taylor, John B, 1980. "Aggregate Dynamics and Staggered Contracts," Journal of Political Economy, University of Chicago Press, vol. 88(1), pages 1-23, February.
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Citations

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Cited by:
  1. Buiter, Willem H., 2008. "Central banks and financial crises," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 495-633.
  2. Rochet, Jean-Charles, 2008. "Commentary : rethinking capital regulation," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 473-483.
  3. Fischer, Stanley, 2008. "General discussion : the role of liquidity in financial crises," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 423-430.
  4. Willem Buiter, 2005. "Overcoming the zero bound on nominal interest rates: Gesell’s currency carry tax vs. Eisler’s parallel virtual currency," International Economics and Economic Policy, Springer, vol. 2(2), pages 189-200, November.
  5. Fisher, Peter R., 2008. "Commentary : the role of liquidity in financial crises," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 413-422.
  6. Buiter, Willem H., 2006. "The elusive welfare economics of price stability as a monetary policy objective: why New Keynesian central bankers should validate core inflation," Working Paper Series 0609, European Central Bank.
  7. Allen, Franklin & Carletti, Elena, 2008. "The role of liquidity in financial crises," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 379-412.
  8. Wilem H. Buiter, 2005. "Overcoming the Zero Bound on Nominal Interest Rates: Gesell's Currency Carry Tax vs. Eisler's arallel Virtual Currency," Hi-Stat Discussion Paper Series d05-96, Institute of Economic Research, Hitotsubashi University.

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