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Bank Competition and Financial Stability: A General Equilibrium Exposition

Author

Listed:
  • Marcella Lucchetta
  • Mr. Gianni De Nicolo

Abstract

We study versions of a general equilibrium banking model with moral hazard under either constant or increasing returns to scale of the intermediation technology used by banks to screen and/or monitor borrowers. If the intermediation technology exhibits increasing returns to scale, or it is relatively efficient, then perfect competition is optimal and supports the lowest feasible level of bank risk. Conversely, if the intermediation technology exhibits constant returns to scale, or is relatively inefficient, then imperfect competition and intermediate levels of bank risks are optimal. These results are empirically relevant and carry significant implications for financial policy.

Suggested Citation

  • Marcella Lucchetta & Mr. Gianni De Nicolo, 2011. "Bank Competition and Financial Stability: A General Equilibrium Exposition," IMF Working Papers 2011/295, International Monetary Fund.
    • Handle: RePEc:imf:imfwpa:2011/295
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    References listed on IDEAS

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    2. Tabak, Benjamin M. & Gomes, Guilherme M.R. & da Silva Medeiros, Maurício, 2015. "The impact of market power at bank level in risk-taking: The Brazilian case," International Review of Financial Analysis, Elsevier, vol. 40(C), pages 154-165.
    3. Beirne, John & Friedrich, Christian, 2017. "Macroprudential policies, capital flows, and the structure of the banking sector," Journal of International Money and Finance, Elsevier, vol. 75(C), pages 47-68.
    4. Calice, Pietro & Leonida, Leone & Muzzupappa, Eleonora, 2021. "Concentration-stability vs concentration-fragility. New cross-country evidence," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 74(C).
    5. Phurichai Rungcharoenkitkul, 2015. "Bank competition and credit booms," BIS Working Papers 488, Bank for International Settlements.

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