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The optimal conduct of central bank asset purchases

Author

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  • Darracq-Pariès, Matthieu
  • Kühl, Michael
Abstract
We analyse the effects of central bank government bond purchases in an estimated DSGE model for the euro area. In the model, central bank asset purchases are relevant in so far as agency costs distort banks' asset allocation between loans and bonds, and households face transaction costs when trading government bonds. Such frictions in the banking sector induce inefficient time-variation in the term premia and allow for a credit channel of central bank government bond purchases. Considering ad hoc asset purchase programmes like the one implemented by the ECB, we show that their macroeconomic multipliers get stronger when the lower bound on the policy rate becomes binding and when the purchasing path is fully communicated and anticipated by the agents. From a more normative standpoint, interest rate policy and asset purchases feature strong strategic complementarities during both normal and crisis times. In an environment when nominal interest rates reach their effective lower bound, optimal monetary policy is to keep the policy rate low for a longer period in time and to engage in asset purchases. Our results also point to a clear sequencing of the exit strategy, first stopping the asset purchases and later raising the policy rate. In terms of macroeconomic stabilisation, optimal asset purchase strategies deliver sizeable benefits and have the potential to largely offset the costs of the lower bound on the policy rate.

Suggested Citation

  • Darracq-Pariès, Matthieu & Kühl, Michael, 2017. "The optimal conduct of central bank asset purchases," Discussion Papers 22/2017, Deutsche Bundesbank.
    • Handle: RePEc:zbw:bubdps:222017
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    References listed on IDEAS

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    Cited by:

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    2. Bailey, Andrew & Bridges, Jonathan & Harrison, Richard & Jones, Josh & Mankodi, Aakash, 2020. "The central bank balance sheet as a policy tool: past, present and future," Bank of England working papers 899, Bank of England.
    3. Darracq Pariès, Matthieu & Papadopoulou, Niki X., 2020. "On the credit and exchange rate channels of central bank asset purchases in a monetary union," Economic Modelling, Elsevier, vol. 91(C), pages 502-533.
    4. Fabian Eser & Peter Karadi & Philip R. Lane & Laura Moretti & Chiara Osbat, 2020. "The Phillips Curve at the ECB," Manchester School, University of Manchester, vol. 88(S1), pages 50-85, September.
    5. Fabo, Brian & Jančoková, Martina & Kempf, Elisabeth & Pástor, Ľuboš, 2024. "Fifty shades of QE: Robust evidence," Journal of Banking & Finance, Elsevier, vol. 159(C).
    6. Zaghini, Andrea, 2019. "The CSPP at work: Yield heterogeneity and the portfolio rebalancing channel," Journal of Corporate Finance, Elsevier, vol. 56(C), pages 282-297.
    7. Kabaca, Serdar & Maas, Renske & Mavromatis, Kostas & Priftis, Romanos, 2023. "Optimal quantitative easing in a monetary union," European Economic Review, Elsevier, vol. 152(C).
    8. Fabo, Brian & Jančoková, Martina & Kempf, Elisabeth & Pástor, Ľuboš, 2021. "Fifty shades of QE: Comparing findings of central bankers and academics," Journal of Monetary Economics, Elsevier, vol. 120(C), pages 1-20.
    9. von Campe, Roland, 2024. "Unconventional monetary policy, financial frictions, and the equity tandem," Journal of Macroeconomics, Elsevier, vol. 79(C).
    10. Matthieu Darracq Paries & Jenny Korner & Niki Papadopoulou, 2019. "Empowering Central Bank Asset Purchases: The Role of Financial Policies," Working Papers 2019-1, Central Bank of Cyprus.
    11. Matthieu Darracq-Pariès & Niki Papadopoulou, 2020. "Balance Sheet Policies in a Large Currency Union: A Primer on ECB Non-Standard Measures since 2014," Revue d'économie politique, Dalloz, vol. 130(2), pages 171-230.
    12. Bryane Michael & Svitlana Osaulenko, 2021. "TOWARD A NEW COMPARATIVE PUBLIC LAW OF CENTRAL BANK LEGISLATION: Designing Legislative Mandates for Central Bank Private Securities Assets Purchases and Nominal GDP Targeting," Journal of Central Banking Theory and Practice, Central bank of Montenegro, vol. 10(1), pages 5-38.
    13. Kok, Christoffer & Darracq Pariès, Matthieu & Hałaj, Grzegorz, 2016. "Bank capital structure and the credit channel of central bank asset purchases," Working Paper Series 1916, European Central Bank.
    14. Burlon, Lorenzo & Notarpietro, Alessandro & Pisani, Massimiliano, 2019. "Macroeconomic effects of an open-ended asset purchase programme," Journal of Policy Modeling, Elsevier, vol. 41(6), pages 1144-1159.
    15. Coenen, Günter & Karadi, Peter & Schmidt, Sebastian & Warne, Anders, 2018. "The New Area-Wide Model II: an extended version of the ECB’s micro-founded model for forecasting and policy analysis with a financial sector," Working Paper Series 2200, European Central Bank.
    16. Harrison, Richard, 2017. "Optimal quantitative easing," Bank of England working papers 678, Bank of England.
    17. Ciccarelli, Matteo & Darracq Pariès, Matthieu & Priftis, Romanos & Angelini, Elena & Bańbura, Marta & Bokan, Nikola & Fagan, Gabriel & Gumiel, José Emilio & Kornprobst, Antoine & Lalik, Magdalena & Mo, 2024. "ECB macroeconometric models for forecasting and policy analysis," Occasional Paper Series 344, European Central Bank.

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    More about this item

    Keywords

    Zero Lower Bound; Optimal Monetary Policy; Banking; Quantitative Easing; DSGE;
    All these keywords.

    JEL classification:

    • C61 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Optimization Techniques; Programming Models; Dynamic Analysis
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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