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Business Economics

, Volume 51, Issue 3, pp 147–154 | Cite as

Finding the Equilibrium Real Interest Rate in a Fog of Policy Deviations

  • John B. Taylor
  • Volker Wieland
Article

Abstract

A large number of recent papers have endeavored to estimate the current level and trend in the equilibrium real interest rate. A common finding in these studies is that the equilibrium real interest rate has declined in recent years. We show that what appear to be trends in the equilibrium interest rate may instead be trends in other policy variables that affect the economy, and that methods used to adjust monetary policy rules to take account of shifts in the equilibrium interest rate alone are incomplete and misleading because they do not incorporate shifts—such as changes in potential GDP—that are associated with the shifts. Finally, we show that alternative simulation techniques can radically alter the results. We conclude that the estimates of time-varying real equilibrium interest rates that have emerged from recent research are not yet useful for application to current monetary policy.

Keywords

Taylor rule equilibrium real rate monetary policy 

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Copyright information

© National Association for Business Economics 2016

Authors and Affiliations

  • John B. Taylor
    • 1
  • Volker Wieland
    • 2
  1. 1.Hoover Institution and Stanford UniversityStanfordUSA
  2. 2.Institute for Monetary and Financial Stability and Goethe University of FrankfurtFrankfurt am MainGermany

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