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An economic capital model integrating credit and interest rate risk in the banking book

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  • Drehmann, Mathias
  • Alessandri, Piergiorgio

Abstract

Banks typically determine their capital levels by separately analysing credit and interest rate risk, but the interaction between the two is significant and potentially complex. We develop an integrated economic capital model for a banking book where all exposures are held to maturity. Our simulations show that capital is mismeasured if risk interdependencies are ignored: adding up economic capital against credit and interest rate risk derived separately provides an upper bound relative to the integrated capital level. The magnitude of the difference depends on the structure of the balance sheet and on the repricing characteristics of assets and liabilities. JEL Classification: G21, E47, C13

Suggested Citation

  • Drehmann, Mathias & Alessandri, Piergiorgio, 2009. "An economic capital model integrating credit and interest rate risk in the banking book," Working Paper Series 1041, European Central Bank.
  • Handle: RePEc:ecb:ecbwps:20091041
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    Cited by:

    1. Buch, Arne & Dorfleitner, Gregor & Wimmer, Maximilian, 2011. "Risk capital allocation for RORAC optimization," Journal of Banking & Finance, Elsevier, vol. 35(11), pages 3001-3009, November.
    2. Pejman Abedifar & Philip Molyneux & Amine Tarazi, 2014. "Non-Interest Income Activities and Bank Lending," Working Papers hal-00947074, HAL.
    3. Memmel, Christoph, 2011. "Banks' exposure to interest rate risk, their earnings from term transformation, and the dynamics of the term structure," Journal of Banking & Finance, Elsevier, vol. 35(2), pages 282-289, February.
    4. repec:eee:ecmode:v:65:y:2017:i:c:p:67-74 is not listed on IDEAS
    5. Jianping Li & Xiaoqian Zhu & Cheng-Few Lee & Dengsheng Wu & Jichuang Feng & Yong Shi, 2015. "On the aggregation of credit, market and operational risks," Review of Quantitative Finance and Accounting, Springer, vol. 44(1), pages 161-189, January.
    6. Abedifar, Pejman & Hasan, Iftekhar & Tarazi, Amine, 2016. "Finance-growth nexus and dual-banking systems: Relative importance of Islamic banks," Journal of Economic Behavior & Organization, Elsevier, vol. 132(S), pages 198-215.
    7. Hasan, Iftekhar & Siddique, Akhtar & Sun, Xian, 2015. "Monitoring the “invisible” hand of market discipline: Capital adequacy revisited," Journal of Banking & Finance, Elsevier, vol. 50(C), pages 475-492.
    8. Pejman Abedifar & Philip Molyneux & Amine Tarazi, 2013. "Risk in Islamic Banking," Review of Finance, European Finance Association, pages 2035-2096.
    9. International Monetary Fund, 2011. "United Kingdom; Stress Testing the Banking Sector Technical Note," IMF Staff Country Reports 11/227, International Monetary Fund.
    10. Ramos-Tallada, Julio, 2015. "Bank risks, monetary shocks and the credit channel in Brazil: Identification and evidence from panel data," Journal of International Money and Finance, Elsevier, vol. 55(C), pages 135-161.
    11. Kretzschmar, Gavin & McNeil, Alexander J. & Kirchner, Axel, 2010. "Integrated models of capital adequacy - Why banks are undercapitalised," Journal of Banking & Finance, Elsevier, vol. 34(12), pages 2838-2850, December.
    12. Drehmann, Mathias & Sorensen, Steffen & Stringa, Marco, 2010. "The integrated impact of credit and interest rate risk on banks: A dynamic framework and stress testing application," Journal of Banking & Finance, Elsevier, vol. 34(4), pages 713-729, April.
    13. Bellini, Tiziano, 2013. "Integrated bank risk modeling: A bottom-up statistical framework," European Journal of Operational Research, Elsevier, vol. 230(2), pages 385-398.
    14. Esposito, Lucia & Nobili, Andrea & Ropele, Tiziano, 2015. "The management of interest rate risk during the crisis: Evidence from Italian banks," Journal of Banking & Finance, Elsevier, vol. 59(C), pages 486-504.
    15. Mun, Kyung-Chun, 2016. "Hedging bank market risk with futures and forwards," The Quarterly Review of Economics and Finance, Elsevier, vol. 61(C), pages 112-125.
    16. Drehmann, Mathias & Alessandri, Piergiorgio, 2009. "An economic capital model integrating credit and interest rate risk in the banking book," Working Paper Series 1041, European Central Bank.
    17. Baldan, Cinzia & Zen, Francesco & Rebonato, Tobia, 2012. "Liquidity risk and interest rate risk on banks: are they related?," MPRA Paper 41323, University Library of Munich, Germany.
    18. Blöchlinger, Andreas, 2011. "Arbitrage-free credit pricing using default probabilities and risk sensitivities," Journal of Banking & Finance, Elsevier, vol. 35(2), pages 268-281, February.
    19. Silva, Hugo E. & Verhoef, Erik T. & van den Berg, Vincent A.C., 2014. "Airlines’ strategic interactions and airport pricing in a dynamic bottleneck model of congestion," Journal of Urban Economics, Elsevier, pages 13-27.
    20. Piergiorgio Alessandri & Benjamin D. Nelson, 2015. "Simple Banking: Profitability and the Yield Curve," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 47(1), pages 143-175, February.
    21. Raupach, Peter, 2015. "Calculating trading book capital: Is risk separation appropriate?," Discussion Papers 19/2015, Deutsche Bundesbank.
    22. Alessandri, Piergiorgio & Drehmann, Mathias, 2010. "An economic capital model integrating credit and interest rate risk in the banking book," Journal of Banking & Finance, Elsevier, vol. 34(4), pages 730-742, April.
    23. Chen, Hsiao-Jung & Lin, Kuan-Ting, 2016. "How do banks make the trade-offs among risks? The role of corporate governance," Journal of Banking & Finance, Elsevier, vol. 72(S), pages 39-69.
    24. Gatzert, Nadine & Vogl, Nikolai, 2016. "Evaluating investments in renewable energy under policy risks," Energy Policy, Elsevier, vol. 95(C), pages 238-252.
    25. Zhao, Hongbiao, 2011. "Portfolio credit risk of default and spread widening," LSE Research Online Documents on Economics 43451, London School of Economics and Political Science, LSE Library.

    More about this item

    Keywords

    asset and liability management; credit risk; Economic capital; Interest Rate Risk; risk management;

    JEL classification:

    • C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Estimation: General
    • E47 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Forecasting and Simulation: Models and Applications
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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