The Equilibrium Real Funds Rate: Past, Present and Future

James Hamilton, Ethan S. Harris, Jan Hatzius and Kenneth West ()

No 21476, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We examine the behavior, determinants, and implications of the equilibrium level of the real federal funds rate, defined as the rate consistent with full employment and stable inflation in the medium term. We draw three main conclusions. First, the uncertainty around the equilibrium rate is large, and its relationship with trend GDP growth much more tenuous than widely believed. Our narrative and econometric analysis using cross-country data and going back to the 19th Century supports a wide range of plausible central estimates for the current level of the equilibrium rate, from a little over 0% to the pre-crisis consensus of 2%. Second, despite this uncertainty, we are skeptical of the “secular stagnation” view that the equilibrium rate will remain near zero for many years to come. The evidence for secular stagnation before the 2008 crisis is weak, and the disappointing post-2008 recovery is better explained by protracted but ultimately temporary headwinds from the housing supply overhang, household and bank deleveraging, and fiscal retrenchment. Once these headwinds had abated by early 2014, US growth did in fact accelerate to a pace well above potential. Third, the uncertainty around the equilibrium rate implies that a monetary policy rule with more inertia than implied by standard versions of the Taylor rule could be associated with smaller deviations of output and inflation from the Fed’s objectives. Our simulations using the Fed staff’s FRB/US model show that explicit recognition of this uncertainty results in a later but steeper normalization path for the funds rate compared with the median “dot” in the FOMC’s Summary of Economic Projections.

JEL-codes: E32 E43 E52 (search for similar items in EconPapers)
Date: 2015-08
New Economics Papers: this item is included in nep-ger, nep-his, nep-mac and nep-mon
Note: EFG ME
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Citations: View citations in EconPapers (133)

Published as James D. Hamilton & Ethan S. Harris & Jan Hatzius & Kenneth D. West, 2016. "The Equilibrium Real Funds Rate: Past, Present, and Future," IMF Economic Review, Palgrave Macmillan;International Monetary Fund, vol. 64(4), pages 660-707, November.

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