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The Risk Of Hitting The Zero Lower Bound And The Optimal Inflation Target

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  • Ngo, Phuong V.

Abstract

I examine the optimal inflation target in a dynamic stochastic New Keynesian model featuring an occasionally binding zero lower bound on nominal interest rate (ZLB). To this end, I first calibrate the shock needed to generate the risk of hitting the ZLB that matches the U.S. data, based on a fully nonlinear method. I then resolve the model with different inflation targets and find that the optimal target is 3.4%. In addition, the optimal inflation target is a nonlinear function of the risk of hitting the ZLB and inflation indexation. It is always greater than 2% if the risk is greater than 2.5% or if the inflation indexation is higher than 0.5. Finally, the linear–quadratic approach overestimates the true optimal inflation target. In particular, based on the benchmark calibration, it generates an optimal target of 5.5%, compared with 3.4% found by the fully nonlinear method.

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  • Ngo, Phuong V., 2018. "The Risk Of Hitting The Zero Lower Bound And The Optimal Inflation Target," Macroeconomic Dynamics, Cambridge University Press, vol. 22(2), pages 402-425, March.
    • Handle: RePEc:cup:macdyn:v:22:y:2018:i:02:p:402-425_00
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    Cited by:

    1. Ngo, Phuong V., 2021. "Fiscal Multipliers At The Zero Lower Bound: The Role Of Government Spending Persistence," Macroeconomic Dynamics, Cambridge University Press, vol. 25(4), pages 970-997, June.
    2. López-Villavicencio, Antonia & Pourroy, Marc, 2019. "Does inflation targeting always matter for the ERPT? A robust approach," Journal of Macroeconomics, Elsevier, vol. 60(C), pages 360-377.
    3. Phuong Ngo & Francois Gourio, 2016. "Risk Premia at the ZLB: a macroeconomic interpretation," 2016 Meeting Papers 1585, Society for Economic Dynamics.
    4. Antonia Lopez Villavicencio & Marc Pourroy, 2019. "Does Inflation Targeting Always Matter for the ERPT? A robust approach," Working Papers hal-02082568, HAL.

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