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A large central bank balance sheet? floor vs corridor systems in a new keynesian environment

Author

Listed:
  • Óscar Arce

    (Banco de España)

  • Galo Nuño

    (Banco de España)

  • Dominik Thaler

    (Banco de España)

  • Carlos Thomas

    (Banco de España)

Abstract

The quantitative easing (QE) policies implemented in recent years by central banks have had a profound impact on the working of money markets, giving rise to large excess reserves and pushing down key interbank rates against their floor – the interest rate on reserves. With macroeconomic fundamentals improving, central banks now face the dilemma as to whether to maintain this large balance sheet/floor system, or else to reduce their balance sheet size towards pre-crisis trends and operate traditional corridor systems. We address this issue using a New Keynesian model featuring heterogeneous banks that trade funds in an interbank market characterized by matching frictions. In this environment, balance sheet expansions push market rates towards their floor by slackening the interbank market. A large balance sheet regime is found to deliver ampler “policy space” by widening the steady-state distance between the interest on reserves and its effective lower bound (ELB). Nonetheless, a lean-balance-sheet regime that resorts to temporary but prompt QE in response to recessions severe enough for the ELB to bind achieves similar stabilization and welfare outcomes as a large-balance-sheet regime in which interest-rate policy is the primary adjustment margin thanks to the larger policy space.

Suggested Citation

  • Óscar Arce & Galo Nuño & Dominik Thaler & Carlos Thomas, 2018. "A large central bank balance sheet? floor vs corridor systems in a new keynesian environment," Working Papers 1851, Banco de España.
  • Handle: RePEc:bde:wpaper:1851
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    References listed on IDEAS

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    Cited by:

    1. Gianluca Benigno & Pierpaolo Benigno, 2022. "Managing Monetary Policy Normalization," Staff Reports 1015, Federal Reserve Bank of New York.
    2. Egemen Eren & Timothy Jackson & Giovanni Lombardo, 2024. "The macroprudential role of central bank balance sheets," Working Papers 202408, University of Liverpool, Department of Economics.
    3. Javier Bianchi & Saki Bigio, 2022. "Banks, Liquidity Management, and Monetary Policy," Econometrica, Econometric Society, vol. 90(1), pages 391-454, January.
    4. Adam Elbourne, 2019. "SVARs, the central bank balance sheet and the effects of unconventional monetary policy in the euro area," CPB Discussion Paper 407.rdf, CPB Netherlands Bureau for Economic Policy Analysis.
    5. Begoña Domínguez & Pedro Gomis‐Porqueras, 2023. "Normalizing the Central Bank's Balance Sheet: Implications for Inflation and Debt Dynamics," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 55(4), pages 945-974, June.
    6. Jorge Abad & Galo Nuño Barrau & Carlos Thomas, 2023. "CBDC and the operational framework of monetary policy," BIS Working Papers 1126, Bank for International Settlements.
    7. Peter Paz, 2022. "Bank capitalization heterogeneity and monetary policy," Working Papers 2234, Banco de España.
    8. Corradin, Stefano & Eisenschmidt, Jens & Hoerova, Marie & Linzert, Tobias & Schepens, Glenn & Sigaux, Jean-David, 2020. "Money markets, central bank balance sheet and regulation," Working Paper Series 2483, European Central Bank.
    9. Robert Gmeiner, 2022. "The Chemistry of the Macroeconomy," Journal of Business Cycle Research, Springer;Centre for International Research on Economic Tendency Surveys (CIRET), vol. 18(3), pages 289-313, November.

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    More about this item

    Keywords

    central bank balance sheet; interbank market; search and matching frictions; reserves; zero lower bound;
    All these keywords.

    JEL classification:

    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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