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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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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. Adam, Klaus & Billi, Roberto M., 2004. "Optimal monetary policy under commitment with a zero bound on nominal interest rates," CFS Working Paper Series 2004/13, Center for Financial Studies (CFS).
  2. Pierpaolo Benigno & Michael Woodford, 2006. "Linear-Quadratic Approximation of Optimal Policy Problems," NBER Working Papers 12672, National Bureau of Economic Research, Inc.
  3. Anton Nakov, 2008. "Optimal and Simple Monetary Policy Rules with Zero Floor on the Nominal Interest Rate," International Journal of Central Banking, International Journal of Central Banking, vol. 4(2), pages 73-127, June.
  4. 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.
  5. Lawrence Christiano & Martin Eichenbaum & Sergio Rebelo, 2009. "When is the government spending multiplier large?," NBER Working Papers 15394, National Bureau of Economic Research, Inc.
  6. 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.
  7. Dennis, Richard, 2007. "Optimal Policy In Rational Expectations Models: New Solution Algorithms," Macroeconomic Dynamics, Cambridge University Press, vol. 11(01), pages 31-55, February.
  8. Vasco Cúrdia & Michael Woodford, 2010. "Conventional and unconventional monetary policy," Review, Federal Reserve Bank of St. Louis, issue May, pages 229-264.
  9. 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.
  10. Gertler, Mark & Karadi, Peter, 2011. "A model of unconventional monetary policy," Journal of Monetary Economics, Elsevier, vol. 58(1), pages 17-34, January.
  11. Kenneth Kuttner, 2006. "Can Central Banks Target Bond Prices?," NBER Working Papers 12454, National Bureau of Economic Research, Inc.
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Citations

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Cited by:
  1. Vasco Curdia & Andrea Ferrero & Han Chen, 2012. "The Macroeconomic Effects of Large-Scale Asset Purchase Programs," 2012 Meeting Papers 372, Society for Economic Dynamics.
  2. Kapetanios, George & Mumtaz, Haroon & Stevens, Ibrahim & Theodoridis, Konstantinos, 2012. "Assessing the economy-wide effects of quantitative easing," Bank of England working papers 443, Bank of England.
  3. Daines, Martin & Joyce, Michael & Tong, Matthew, 2012. "QE and the gilt market: a disaggregated analysis," Bank of England working papers 466, Bank of England.
  4. 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.
  5. M. Falagiarda & M. Marzo, 2012. "A DSGE model with Endogenous Term Structure," Working Papers wp830, Dipartimento Scienze Economiche, Universita' di Bologna.
  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. 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.
  8. Falagiarda, Matteo, 2013. "Evaluating Quantitative Easing: A DSGE Approach," MPRA Paper 49457, University Library of Munich, Germany.
  9. 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.
  10. 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.
  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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