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Banking Regulation and Financial Accelerators: A One-Period Model with Unlimited Liability


  • Bühler, Wolfgang
  • Koziol, Christian


In this paper, we analyze the consequences of bank regulation on the size of the real sector. In particular, we address the question whether exogenous shocks on the return-risk characteristics of the technology and on the equity of the real sector are intensified or damped by a value-at-risk constraint on the credit portfolio of a bank. We consider a one-period model with three risk-averse agents, an investor, a bank, and a firm. The size of the markets for deposits and loans, their prices and the size of the real sector are endogenous. We find that stricter regulation results in higher loan rates, lower deposit rates, and lower activity in the real sector. A negative shock on the return-risk position or on the risk buffer of the real sector reduces the activities in the economy. Surprisingly, the sensitivity of the real sector's activities on negative shocks is smaller for a regulated financial sector than for a non-regulated one. Therefore, in our economy, imperfections in the financial sector do not result in procyclical or acceleration effects.

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  • Bühler, Wolfgang & Koziol, Christian, 2004. "Banking Regulation and Financial Accelerators: A One-Period Model with Unlimited Liability," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 17, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
  • Handle: RePEc:trf:wpaper:17

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    1. Blum, Jurg & Hellwig, Martin, 1995. "The macroeconomic implications of capital adequacy requirements for banks," European Economic Review, Elsevier, vol. 39(3-4), pages 739-749, April.
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    4. Repullo, Rafael & Suarez, Javier, 2004. "Loan pricing under Basel capital requirements," Journal of Financial Intermediation, Elsevier, vol. 13(4), pages 496-521, October.
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    6. Jean-Pierre Zigrand & Jon Danielsson, 2001. "What Happens When You Regulate Risk? Evidence from a Simple Equilibrium Model," FMG Discussion Papers dp393, Financial Markets Group.
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    8. Bernanke, Ben S, 1983. "Nonmonetary Effects of the Financial Crisis in Propagation of the Great Depression," American Economic Review, American Economic Association, vol. 73(3), pages 257-276, June.
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    10. Con Keating & Hyun Song Shin & Charles Goodhart & Jon Danielsson, 2001. "An Academic Response to Basel II," FMG Special Papers sp130, Financial Markets Group.
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