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Title: The Role of Money in Monetary Policy at the Lower Bound

Author(s): Roberto M Billi, Ulf S�derstr�m and Carl Walsh

Publication Date: June 2020

Keyword(s): Automatic Stabilizers, Fiscal policy, Friedman's k-percent rule and ZLB constraint

Programme Area(s): Monetary Economics and Fluctuations

Abstract: In light of the current low-interest-rate environment, we reconsider the merit of a money growth target (MGT) relative to a conventional inflation targeting (IT) regime, and to the notion of price level targeting (PLT). Through the lens of a New Keynesian model, and accounting for a zero lower bound (ZLB) constraint on the nominal interest rate, we show, not surprisingly, that PLT performs best in terms of social welfare. However, the ranking between IT and MGT is not a foregone conclusion. In particular, although MGT makes monetary policy vulnerable to money demand shocks, it contributes to achieving price level stability and reduces the incidence and severity of the ZLB relative to both IT and PLT. We also show that MGT lessens the need for the fiscal authority to engage alongside the central bank in fighting recessions. To illustrate this fiscal benefit of MGT, we introduce a simple rule for the fiscal authority to raise government purchases when GDP falls below potential. If the government fails to make up for a substantial share of the shortfalls in GDP, then IT performs worse than MGT from the perspective of society.

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Bibliographic Reference

Billi, R, S�derstr�m, U and Walsh, C. 2020. 'The Role of Money in Monetary Policy at the Lower Bound'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=14865