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Determinants of bank interest margins: Impact of maturity transformation

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  • Entrop, Oliver
  • Memmel, Christoph
  • Ruprecht, Benedikt
  • Wilkens, Marco

Abstract

This paper explores the extent to which interest risk exposure is priced in bank margins. Our contribution to the literature is twofold: First, we present an extended model of Ho and Saunders (1981) that explicitly captures interest rate risk and returns from maturity transformation. Banks price interest risk according to their individual exposure separately in loan and deposit rates, but reduce these charges when they expect returns from maturity transformation. Second, using a comprehensive dataset covering the German universal banks between 2000 and 2009, we test the model-implied hypotheses not only for the commonly investigated net interest income, but additionally for interest income and expenses separately. Controlling for earnings from bank-individual maturity transformation strategies, we find all banks to charge additional fees for macroeconomic interest volatility exposure. Microeconomic on-balance interest risk exposure from maturity transformation, however, only affects the smaller savings and cooperative banks, but not private commercial banks. Returns are only priced in income margins.

Suggested Citation

  • Entrop, Oliver & Memmel, Christoph & Ruprecht, Benedikt & Wilkens, Marco, 2012. "Determinants of bank interest margins: Impact of maturity transformation," Discussion Papers 17/2012, Deutsche Bundesbank.
  • Handle: RePEc:zbw:bubdps:172012
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    Cited by:

    1. Ruprecht, Benedikt & Entrop, Oliver & Kick, Thomas & Wilkens, Marco, 2013. "Market timing, maturity mismatch, and risk management: Evidence from the banking industry," Discussion Papers 56/2013, Deutsche Bundesbank.
    2. Md. Shahidul Islam & Shin-Ichi Nishiyama, 2016. "The Determinants of Bank Profitability: Dynamic Panel Evidence from South Asian Countries," Journal of Applied Finance & Banking, SCIENPRESS Ltd, vol. 6(3), pages 1-6.
    3. Holton, Sarah & Kelly, Jane & Lydon, Reamonn & Monks, Allen & O'Donnell, Nuala, 2013. "The Impact of the Financial Crisis on Banks' Net Interest Margins," Economic Letters 01/EL/13, Central Bank of Ireland.
    4. Kapounek, Svatopluk & Kučerová, Zuzana & Fidrmuc, Jarko, 2017. "Lending conditions in EU: The role of credit demand and supply," Economic Modelling, Elsevier, vol. 67(C), pages 285-293.
    5. Pierluigi Bologna, 2017. "Banks’ maturity transformation: risk, reward, and policy," Temi di discussione (Economic working papers) 1159, Bank of Italy, Economic Research and International Relations Area.
    6. repec:eco:journ1:2018-01-7 is not listed on IDEAS
    7. Birchwood, Anthony & Brei, Michael & Noel, Dorian M., 2017. "Interest margins and bank regulation in Central America and the Caribbean," Journal of Banking & Finance, Elsevier, vol. 85(C), pages 56-68.
    8. Ramona Busch & Christoph Memmel, 2016. "Quantifying the components of the banks’ net interest margin," Financial Markets and Portfolio Management, Springer;Swiss Society for Financial Market Research, vol. 30(4), pages 371-396, November.
    9. Ramayandi, Arief & Rawat, Umang & Tang, Hsiao Chink, 2014. "Can Low Interest Rates be Harmful: An Assessment of the Bank Risk-Taking Channel in Asia," Working Papers on Regional Economic Integration 123, Asian Development Bank.
    10. Bologna, Pierluigi, 2018. "Banks’ maturity transformation: risk, reward, and policy," ESRB Working Paper Series 63, European Systemic Risk Board.
    11. Marco Pedrotti, 2014. "Model for the Interest Margin of a Risk-Neutral Bank. The Role of the Bank Orientation," Journal of Entrepreneurial and Organizational Diversity, European Research Institute on Cooperative and Social Enterprises, vol. 3(1), pages 167-180, June.
    12. Wang, J. Christina, 2017. "Banks' search for yield in the low interest rate environment: a tale of regulatory adaptation," Working Papers 17-3, Federal Reserve Bank of Boston.
    13. Ulrich Gunter & Gerald Krenn & Michael Sigmund, 2013. "Macroeconomic, Market and Bank-Specific Determinants of the Net Interest Margin in Austria," Financial Stability Report, Oesterreichische Nationalbank (Austrian Central Bank), issue 25, pages 87-101.
    14. repec:kap:jfsres:v:53:y:2018:i:1:d:10.1007_s10693-016-0262-1 is not listed on IDEAS
    15. repec:bla:ecnote:v:46:y:2017:i:3:p:555-586 is not listed on IDEAS

    More about this item

    Keywords

    Interest rate risk; Interest margins; Maturity transformation;

    JEL classification:

    • D21 - Microeconomics - - Production and Organizations - - - Firm Behavior: Theory
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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