Credit Frictions and Optimal Monetary Policy

Vasco Cúrdia and Michael Woodford

No 21820, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We extend the basic (representative-household) New Keynesian [NK] model of the monetary transmission mechanism to allow for a spread between the interest rate available to savers and borrowers, that can vary for either exogenous or endogenous reasons. We find that the mere existence of a positive average spread makes little quantitative difference for the predicted effects of particular policies. Variation in spreads over time is of greater significance, with consequences both for the equilibrium relation between the policy rate and aggregate expenditure and for the relation between real activity and inflation. Nonetheless, we find that the target criterion—a linear relation that should be maintained between the inflation rate and changes in the output gap—that characterizes optimal policy in the basic NK model continues to provide a good approximation to optimal policy, even in the presence of variations in credit spreads. Such a "flexible inflation target" can be implemented by a central-bank reaction function that is similar to a forward-looking Taylor rule, but adjusted for changes in current and expected future credit spreads.

JEL-codes: E44 E52 (search for similar items in EconPapers)
Date: 2015-12
New Economics Papers: this item is included in nep-dge, nep-mac and nep-mon
Note: EFG ME
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Citations: View citations in EconPapers (19)

Published as Vasco Cúrdia & Michael Woodford, 2016. "Credit Frictions and Optimal Monetary Policy," Journal of Monetary Economics, .

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Related works:
Journal Article: Credit Frictions and Optimal Monetary Policy (2016)
Working Paper: Credit Frictions and Optimal Monetary Policy (2015)
Working Paper: Credit frictions and optimal monetary policy (2015)
Working Paper: Credit frictions and optimal monetary policy (2009)
Working Paper: Credit frictions and optimal monetary policy (2008)
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