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Title: Dynamic Debt Deleveraging and Optimal Monetary Policy

Author(s): Pierpaolo Benigno, Gauti Eggertsson and Federica Romei

Publication Date: March 2016

Keyword(s):

Programme Area(s): Monetary Economics and Fluctuations

Abstract: This paper studies optimal monetary policy under dynamic debt deleveraging once the zero bound is binding. Unlike much of the existing literature, the natural rate of interest is endogenous and depends on macroeconomic policy. We provide microfoundation for debt deleveraging based both on household over accumulation of debt and leverage constraint on banks; and show that they are isomorphic in our proposed post-crisis New Keynesian model, thus integrating two popular narrative for the crisis. Optimal monetary policy successfully raises the natural rate of interest by creating an environment that speeds up deleveraging, thus endogenously shortening the duration of the crisis and a binding zero bound. Inflation should be front loaded. Fiscal-policy multipliers can be even higher than in existing models, but depend on the way in which public spending is financed.

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Bibliographic Reference

Benigno, P, Eggertsson, G and Romei, F. 2016. 'Dynamic Debt Deleveraging and Optimal Monetary Policy'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=11180