Conventional and Unconventional Monetary Policy with Endogenous Collateral Constraints

Michael Woodford, Aloisio Araujo and Susan Schommer

No 9995, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We consider the effects of central-bank purchases of a risky asset, financed by issuing riskless nominal liabilities (reserves), as an additional dimension of policy alongside ?conventional? monetary policy (central-bank control of the riskless nominal interest rate), in a general-equilibrium model of asset pricing and risk sharing with endogenous collateral constraints of the kind proposed by Geanakoplos (1997). When sufficient collateral exists for collateral constraints not to bind for any agents, we show that central-bank asset purchases have no effects on either real or nominal variables, despite the differing risk characteristics of the assets purchased and the ones issued to finance these purchases. At the same time, the existence of collateral constraints allows our model to capture the common view that large enough central-bank purchases would eventually have to effect asset prices. But even when central-bank purchases raise the price of the asset, owing to binding collateral constraints, the effects need not be the ones commonly assumed. We show that under some circumstances, central-bank purchases relax financial constraints, increase aggregate demand, and may even achieve a Pareto improvement; but in other cases, they may tighten financial constraints, reduce aggregate demand, and lower welfare. The latter case is almost certainly the one that arises if central-bank purchases are sufficiently large.

JEL-codes: D53 E52 E58 (search for similar items in EconPapers)
Date: 2014-05
New Economics Papers: this item is included in nep-cba, nep-mac and nep-mon
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Related works:
Journal Article: Conventional and Unconventional Monetary Policy with Endogenous Collateral Constraints (2015)
Chapter: Conventional and Unconventional Monetary Policy with Endogenous Collateral Constraints (2013)
Working Paper: Conventional and Unconventional Monetary Policy with Endogenous Collateral Constraints (2013)
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