Optimal Monetary Policy with Negative r*

Roberto Billi, Galí, Jordi and Anton Nakov

No 18307, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: We study the optimal monetary policy problem in a New Keynesian economy with a zero lower bound (ZLB) on the. nominal interest rate, when the steady state natural rate. (r*) becomes permanently negative. We show that the optimal policy aims to approach gradually a new steady state with positive average inflation. Around that steady state, the optimal policy implies well defined (second-best) paths for inflation and output in response to shocks to the natural rate. Under plausible calibrations, the optimal policy implies that the nominal rate remains at its ZLB most of the time. Despite the latter feature, the central bank can implement the optimal outcome as a unique equilibrium by means of an appropriate nonlinear interest rate rule. In order to establish that result, we derive sufficient conditions for local determinacy in a general model with endogenous regime switches.

JEL-codes: E32 E52 (search for similar items in EconPapers)
Date: 2023-07
References: Add references at CitEc
Citations:

Downloads: (external link)
https://cepr.org/publications/DP18307 (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:cpr:ceprdp:18307

Ordering information: This working paper can be ordered from
https://cepr.org/publications/DP18307

Access Statistics for this paper

More papers in CEPR Discussion Papers from Centre for Economic Policy Research 33 Great Sutton Street, London EC1V 0DX, UK.
Bibliographic data for series maintained by CEPR ().