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Why do we have an interbank money market?

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  • Wiemers, Jürgen
  • Neyer, Ulrike

Abstract

The interbank money market plays a key role in the execution of monetary policy. Hence, it is important to know the functioning of this market and the determinants of the interbank money market rate. In this paper, we develop an interbank money market model with a heterogeneous banking sector. We show that besides for balancing daily liquidity fluctuations banks participate in the interbank market because they have different marginal costs of obtaining funds from the central bank. In the euro area, which we refer to, these cost differences occur because banks have different marginal cost of collateral which they need to hold to obtain funds from the central bank. Banks with relatively low marginal costs act as intermediaries between the central bank and banks with relatively high marginal costs. The necessary positive spread between the interbank market rate and the central bank rate is determined by transaction costs and credit risk in the interbank market, total liquidity needs of the banking sector, costs of obtaining funds from the central bank, and the distribution of the latter across banks.

Suggested Citation

  • Wiemers, Jürgen & Neyer, Ulrike, 2003. "Why do we have an interbank money market?," IWH Discussion Papers 182/2003, Halle Institute for Economic Research (IWH).
    • Handle: RePEc:zbw:iwhdps:iwh-182
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    10. repec:zbw:bofrdp:2001_008 is not listed on IDEAS
    11. Neyer, Ulrike, 2003. "Banks' Behaviour in the European Money Market and the Operational Framework of the Eurosystem," Royal Economic Society Annual Conference 2003 158, Royal Economic Society.
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    Cited by:

    1. De La Motte, Laura & Czernomoriez, Janna & Clemens, Marius, 2010. "Zur Vertrauensökonomik: Der Interbankenmarkt in der Krise von 2007-2009 [Economics of trust: The interbank market during the crisis 2007-2009]," MPRA Paper 20357, University Library of Munich, Germany.
    2. Giulio Cimini & Matteo Serri, 2016. "Entangling Credit and Funding Shocks in Interbank Markets," PLOS ONE, Public Library of Science, vol. 11(8), pages 1-15, August.
    3. Marnix Van Soom & Milan Van Den Heuvel & Jan Ryckebusch & Koen Schoors, 2019. "Loan Maturity Aggregation In Interbank Lending Networks Obscures Mesoscale Structure And Economic Functions," Working Papers of Faculty of Economics and Business Administration, Ghent University, Belgium 19/952, Ghent University, Faculty of Economics and Business Administration.
    4. Anastasios Demertzidis & Vahidin Jeleskovic, 2021. "Empirical Estimation of Intraday Yield Curves on the Italian Interbank Credit Market e-MID," JRFM, MDPI, vol. 14(5), pages 1-23, May.
    5. Nijathaworn, Bandid & Chaikhor, Suwatchai & Chotika-arpa, Suppakorn & Sakkankosone, Suchart, 2015. "Monetary Policy and Foreign Exchange Management: Reforming Central Bank Functions in Myanmar," ADB Economics Working Paper Series 431, Asian Development Bank.

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    More about this item

    Keywords

    interbank money market; European Central Bank; monetary policy instruments;
    All these keywords.

    JEL classification:

    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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