This paper considers the appropriate stabilization objectives for monetary policy in a microfounded model with staggered price-setting. Rotemberg and Woodford (1997) and Woodford (2002) have shown that under certain conditions, a local approximation to the expected utility of the representative household in a model of this kind is related inversely to the expected discounted value of a conventional quadratic loss function, in which each period's loss is a weighted average of squared deviations of inflation and an output gap measure from their optimal values (zero). However, those derivations rely on an assumption of the existence of an output or employment subsidy that offsets the distortion due to the market power of monopolistically-competitive price-setters, so that the steady state under a zero-inflation policy involves an efficient level of output. Here we show how to dispense with this unappealing assumption, so that a valid linear-quadratic approximation to the optimal policy problem is possible even when the steady state is distorted to an arbitrary extent (allowing for tax distortions as well as market power), and when, as a consequence, it is necessary to take account of the effects of stabilization policy on the average level of output. We again obtain a welfare-theoretic loss function that involves both inflation and an appropriately defined output gap, though the degree of distortion of the steady state affects both the weights on the two stabilization objectives and the definition of the welfare-relevant output gap. In the light of these results, we reconsider the conditions under which complete price stability is optimal, and find that they are more restrictive in the case of a distorted steady state. We also consider the conditions under which pure randomization of monetary policy can be welfare-improving, and find that this is possible in the case of a sufficiently distorted steady state, though the parameter values required are probably not empirically realistic.
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Paper provided by Columbia University, Department of Economics in its series Discussion Papers with number
0405-04.
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
Aubhik Khan & Robert G. King & Alexander L. Wolman, 2003.
"Optimal Monetary Policy,"
Review of Economic Studies,
Blackwell Publishing, vol. 70(4), pages 825-860, October.
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Other versions:
Aubhik Khan & Robert King & Alexander L. Wolman, 2002.
"Optimal monetary policy,"
Working Papers
02-19, Federal Reserve Bank of Philadelphia.
[Downloadable!]
Aubhik Khan & Robert G. King & Alexander L. Wolman, 2000.
"Optimal monetary policy,"
Working Paper
00-10, Federal Reserve Bank of Richmond.
[Downloadable!]
Aubhik Khan & Robert G. King & Alexander L. Wolman, 2001.
"Optimal monetary policy,"
Working Papers
01-5, Federal Reserve Bank of Philadelphia.
[Downloadable!]
Aubhik Khan & Robert G. King & Alexander L. Wolman, 2002.
"Optimal Monetary Policy,"
NBER Working Papers
9402, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
Marc Giannoni & Michael Woodford, 2004.
"Optimal Inflation-Targeting Rules,"
NBER Chapters,
in: The Inflation-Targeting Debate, pages 93-172
National Bureau of Economic Research, Inc.
[Downloadable!]
Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.) This item has more than 25 citations. To prevent cluttering this page, these citations are listed on a separate page.