TY - JOUR AU - Atkeson,Andrew AU - Chari,V. V. AU - Kehoe,Patrick J. TI - On the Optimal Choice of a Monetary Policy Instrument JF - National Bureau of Economic Research Working Paper Series VL - No. 13398 PY - 2007 Y2 - September 2007 UR - http://www.nber.org/papers/w13398 L1 - http://www.nber.org/papers/w13398.pdf N1 - Author contact info: Andrew Atkeson Bunche Hall 9381 Department of Economics UCLA Box 951477 Los Angeles, CA 90095-1477 Tel: 866/312-9770 Fax: 310/825-9528 E-Mail: andy@atkeson.net Varadarajan V. Chari Department of Economics University of Minnesota 1035 Heller Hall 271 - 19th Avenue South Minneapolis, MN 55455 Tel: 612/626-5171 Fax: (612) 624-0209 E-Mail: chari@res.mpls.frb.fed.us Patrick Kehoe Research Department Federal Reserve Bank of Minneapolis 90 Hennepin Avenue Minneapolis, MN 55480-0291 Tel: 612/204-5525 Fax: 612/204-5515 E-Mail: pkehoe@res.mpls.frb.fed.us AB - The optimal choice of a monetary policy instrument depends on how tight and transparent the available instruments are and on whether policymakers can commit to future policies. Tightness is always desirable; transparency is only if policymakers cannot commit. Interest rates, which can be made endogenously tight, have a natural advantage over money growth and exchange rates, which cannot. As prices, interest and exchange rates are more transparent than money growth. All else equal, the best instrument is interest rates and the next-best, exchange rates. These findings are consistent with the observed instrument choices of developed and less-developed economies. ER -