TY - JOUR AU - Giannoni,Marc P. AU - Woodford,Michael TI - Optimal Interest-Rate Rules: II. Applications JF - National Bureau of Economic Research Working Paper Series VL - No. 9420 PY - 2003 Y2 - January 2003 UR - http://www.nber.org/papers/w9420 L1 - http://www.nber.org/papers/w9420.pdf N1 - Author contact info: Marc Giannoni Federal Reserve Bank of New York Macroeconomic & Monetary Studies Function Research and Statistics Group 33 Liberty Street New York, NY 10045-0001 Tel: 212-720-6518 Fax: 212-720-1844 E-Mail: mg2190@columbia.edu Michael Woodford Department of Economics Columbia University 420 W. 118th Street New York, NY 10027 Tel: 212/854-1094 Fax: 212-854-8059 E-Mail: mw2230@columbia.edu AB - In this paper we calculate robustly optimal monetary policy rules for several variants of a simple optimizing model of the monetary transmission mechanism with sticky prices and/or wages. We discuss representations of optimal policy both in terms of interest-rate feedback rules that generalize the well-known Taylor rule,' and in terms of commitment to a target criterion of the kind discussed in familiar proposals for flexible inflation targeting.' Optimal rules, however, require that policy be history-dependent in ways not contemplated by many well-known proposals. We furthermore find that a robustly optimal policy rule is almost inevitably an implicit rule, that requires the central bank to use a structural model to project the economy's evolution under the contemplated policy action. Finally, our numerical examples suggest that optimal rules do not place nearly as much weight on projections of inflation or output many quarters in the future as occurs under the current practice of inflation-forecast targeting central banks. ER -