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The Determinants of Bank Interest Margins: Estimates of a Dynamic Model

  • Massimo Giulidori
  • Enzo Dia


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We develop a monopolistic version of a dynamic model of banking, where financial intermediation and payment services play a relevant role. We then empirically test the model using balance-sheet data for large European and US banks, and find strong support for the main predictions of the model. Interest revenues and costs are in fact very persistent, and they are strongly influenced by revenues from fees, and industrial and default costs. Interest margins rise with both short and long-term interest rates; however, when splitting the sample, we find that the results for the impact of interest rates are driven by the European banks. Finally, we find evidence that interest margins are anti-cyclical.

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Paper provided by University of Milano-Bicocca, Department of Economics in its series Working Papers with number 157.

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Length: 28 pages
Date of creation: Mar 2009
Date of revision: Mar 2009
Handle: RePEc:mib:wpaper:157
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  1. David Neumark & Steven A. Sharpe, 1989. "Market structure and the nature of price rigidity: evidence from the market for consumer deposits," Finance and Economics Discussion Series 52, Board of Governors of the Federal Reserve System (U.S.).
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  12. Flannery, Mark J, 1982. "Retail Bank Deposits as Quasi-Fixed Factors of Production," American Economic Review, American Economic Association, vol. 72(3), pages 527-36, June.
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  14. Maudos, Joaquin & Fernandez de Guevara, Juan, 2004. "Factors explaining the interest margin in the banking sectors of the European Union," Journal of Banking & Finance, Elsevier, vol. 28(9), pages 2259-2281, September.
  15. Bordes, Christian & Goyeau, Daniel & Melitz, Jacques & Sauviat, Alain, 1991. "The profitability of anticipated inflation in banking," Economics Letters, Elsevier, vol. 37(1), pages 57-60, September.
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  17. Carbo Valverde, Santiago & Rodriguez Fernandez, Francisco, 2007. "The determinants of bank margins in European banking," Journal of Banking & Finance, Elsevier, vol. 31(7), pages 2043-2063, July.
  18. Osborne, Dale K, 1982. "The Cost of Servicing Demand Deposits," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 14(4), pages 479-93, November.
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