Friedman’s money supply rule vs optimal interest rate policy
Using New Keynesian models, we compare Friedman’s k-percent money supply rule to optimal interest rate setting, with respect to determinacy, stability under learning and optimality. We first review the recent literature. Open-loop interest rate rules are subject to indeterminacy and instability problems, but a properly chosen expectations-based rule yields determinacy and stability under learning, and implements optimal policy. We then show that Friedman’s rule also can generate equilibria that are determinate and stable under learning. However, in computing the mean quadratic welfare loss, we find that for calibrated models Friedman’s rule performs poorly compared to the optimal interest rate rule.
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- Michael Woodford, 1999. "Commentary : how should monetary policy be conducted in an era of price stability?," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 277-316.
- Evans, George W. & Honkapohja, Seppo, 2007.
"Policy Interaction, Learning, And The Fiscal Theory Of Prices,"
Cambridge University Press, vol. 11(05), pages 665-690, November.
- George W. Evans & Seppo Honkapohja, 2002. "Policy Interaction, Learning and the Fiscal Theory of Prices," University of Oregon Economics Department Working Papers 2002-17, University of Oregon Economics Department, revised 07 Jun 2007.
- Evans, George W. & Honkapohja, Seppo, 2002. "Policy interaction, learning and the fiscal theory of prices," Research Discussion Papers 18/2002, Bank of Finland.
- Evans, G W & Honkapohja, Seppo, 2002. "Policy Interaction, Learning and the Fiscal Theory of Prices," CEPR Discussion Papers 3564, C.E.P.R. Discussion Papers.
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