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Welfare-Maximizing Monetary Policy under Parameter Uncertainty

  • Thomas Laubach

    (Federal Reserve Board)

  • John C. Williams

    (Federal Reserve Bank of San Francisco)

  • Rochelle M. Edge

    (Federal Reserve Board))

This paper examines welfare-maximizing monetary policy in an estimated dynamic stochastic general equilibrium model of the U.S. economy where the policymaker faces uncertainty about the true values of model parameters. Uncertainty about parameters describing preferences and technology implies not only uncertainty about model dynamics but also uncertainty about the “natural” level of output that the central bank should aim to achieve. We analyze the characteristics and performance of alternative monetary policy rules given the estimated covariance of parameter estimates. We find that the natural rates of output is very imprecisely estimated. We then show that policy rules that rely on the output gap and therefore estimates estimates of the natural rate of output perform poorly under parameter uncertainty. Instead, optimal policies respond primarily to indirect signals regarding natural rates extracted from observed prices and wages.

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Paper provided by Society for Economic Dynamics in its series 2007 Meeting Papers with number 311.

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Date of creation: 2007
Date of revision:
Handle: RePEc:red:sed007:311
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Society for Economic Dynamics Marina Azzimonti Department of Economics Stonybrook University 10 Nicolls Road Stonybrook NY 11790 USA

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