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Asset purchase policy at the effective lower bound for interest rates

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  • Harrison, Richard

    ()
    (Bank of England)

Abstract

This paper studies optimal policy in a stylised New Keynesian model that is extended to incorporate imperfect substitutability between short-term and long-term bonds. This simple modification provides a channel through which asset purchases by the policy maker can affect aggregate demand. Because assets are imperfect substitutes, central bank asset purchases that alter the relative supplies of assets can influence their prices. In the model, aggregate demand depends on the prices (or interest rates) of both long-term and short-term bonds. To the extent that central bank asset purchases reduce long-term interest rates (over and above the effect of expected future short rates), aggregate demand can be stimulated, leading to higher inflation through a standard New Keynesian Phillips Curve. However, the imperfect substitutability between bonds that gives asset purchases their traction also reduces the potency of conventional monetary policy because reductions in the short-term nominal interest rate reduce the relative supply of short-term bonds, increasing the premium on long-term bonds. Nevertheless, a policy in which the policymaker uses asset purchases as an additional policy instrument can improve outcomes in the face of a negative demand shock that drives the short-term policy rate to its lower bound. This is true even if asset purchases policies are also subject to (both upper and lower) bounds.

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File URL: http://www.bankofengland.co.uk/research/Documents/workingpapers/2012/wp444.pdf
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Bibliographic Info

Paper provided by Bank of England in its series Bank of England working papers with number 444.

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Length: 55 pages
Date of creation: 27 Jan 2012
Date of revision:
Handle: RePEc:boe:boeewp:0444

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Keywords: Monetary policy; zero bound; asset purchase policies;

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References

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  1. Pierpaolo Benigno & Michael Woodford, 2006. "Linear-Quadratic Approximation of Optimal Policy Problems," NBER Working Papers 12672, National Bureau of Economic Research, Inc.
  2. Cúrdia, Vasco & Woodford, Michael, 2009. "Conventional and Unconventional Monetary Policy," CEPR Discussion Papers 7514, C.E.P.R. Discussion Papers.
  3. Andrés, Javier & López-Salido, J David & Nelson, Edward, 2004. "Tobin's Imperfect Asset Substitution in Optimizing General Equilibrium," CEPR Discussion Papers 4336, C.E.P.R. Discussion Papers.
  4. Kenneth Kuttner, 2006. "Can Central Banks Target Bond Prices?," NBER Working Papers 12454, National Bureau of Economic Research, Inc.
  5. Roberto M. Billi & Klaus Adam, 2004. "Optimal Monetary Policy under Commitment with a Zero Bound on Nominal Interest Rates," Computing in Economics and Finance 2004 67, Society for Computational Economics.
  6. Jung, Taehun & Teranishi, Yuki & Watanabe, Tsutomu, 2005. "Optimal Monetary Policy at the Zero-Interest-Rate Bound," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 37(5), pages 813-35, October.
  7. Joyce, Michael & Lasaosa, Ana & Stevens , Ibrahim & Tong, Matthew, 2010. "The financial market impact of quantitative easing," Bank of England working papers 393, Bank of England.
  8. Gertler, Mark & Karadi, Peter, 2011. "A model of unconventional monetary policy," Journal of Monetary Economics, Elsevier, vol. 58(1), pages 17-34, January.
  9. Anton Nakov, 2006. "Optimal and Simple Monetary Policy Rules with Zero Floor on the Nominal Interest Rate," Banco de Espa�a Working Papers 0637, Banco de Espa�a.
  10. Lawrence Christiano & Martin Eichenbaum & Sergio Rebelo, 2009. "When is the government spending multiplier large?," NBER Working Papers 15394, National Bureau of Economic Research, Inc.
  11. Richard Dennis, 2001. "Optimal policy in rational-expectations models: new solution algorithms," Working Paper Series 2001-09, Federal Reserve Bank of San Francisco.
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Cited by:
  1. Daines, Martin & Joyce, Michael & Tong, Matthew, 2012. "QE and the gilt market: a disaggregated analysis," Bank of England working papers 466, Bank of England.
  2. M. Marzo & P. Zagaglia, 2012. "Bonds Transaction Services and the Term Structure of Interest Rates: Implications for Equilibrium Determinacy," Working Papers wp821, Dipartimento Scienze Economiche, Universita' di Bologna.
  3. Han Chen & Vasco Cúrdia & Andrea Ferrero, 2012. "The macroeconomic effects of large-scale asset purchase programs," Working Paper Series 2012-22, Federal Reserve Bank of San Francisco.
  4. George Kapetanios & Haroon Mumtaz & Ibrahim Stevens & Konstantinos Theodoridis, 2012. "Assessing the Economy‐wide Effects of Quantitative Easing," Economic Journal, Royal Economic Society, vol. 122(564), pages F316-F347, November.
  5. Joyce, Michael & Tong, Matthew & Woods, Robert, 2011. "The United Kingdom’s quantitative easing policy: design, operation and impact," Bank of England Quarterly Bulletin, Bank of England, vol. 51(3), pages 200-212.
  6. Fabrizio Zampolli, 2012. "Sovereign debt management as an instrument of monetary policy: an overview," BIS Papers chapters, in: Bank for International Settlements (ed.), Threat of fiscal dominance?, volume 65, pages 97-118 Bank for International Settlements.
  7. Bridges, Jonathan & Thomas, Ryland, 2012. "The impact of QE on the UK economy – some supportive monetarist arithmetic," Bank of England working papers 442, Bank of England.
  8. Burgess, Stephen & Fernandez-Corugedo, Emilio & Groth, Charlotta & Harrison, Richard & Monti, Francesca & Theodoridis, Konstantinos & Waldron, Matt, 2013. "The Bank of England's forecasting platform: COMPASS, MAPS, EASE and the suite of models," Bank of England working papers 471, Bank of England.
  9. Falagiarda, Matteo, 2013. "Evaluating Quantitative Easing: A DSGE Approach," MPRA Paper 49457, University Library of Munich, Germany.
  10. M. Falagiarda & M. Marzo, 2012. "A DSGE model with Endogenous Term Structure," Working Papers wp830, Dipartimento Scienze Economiche, Universita' di Bologna.
  11. Joyce, Michael, 2012. "Quantitative easing and other unconventional monetary policies: Bank of England conference summary," Bank of England Quarterly Bulletin, Bank of England, vol. 52(1), pages 48-56.

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