Caught between Scylla and Charybdis? Regulating bank leverage when there is rent-seeking and risk-shifting
AbstractWe consider a model in which banks face two moral hazard problems: 1) asset substitution by shareholders, which can occur when banks make socially-inefficient, risky loans; and 2) managerial under-provision of effort in loan monitoring. The privately-optimal level of bank leverage is neither too low nor too high: It efficiently balances the market discipline that owners of risky debt impose on managerial shirking in monitoring loans against the asset substitution induced at high levels of leverage. However, when correlated bank failures can impose significant social costs, regulators may bail out bank creditors. Anticipation of this action generates an equilibrium featuring systemic risk, in which all banks choose inefficiently high leverage to fund correlated, excessively risky assets. That is, regulatory forbearance itself becomes a source of systemic risk. Leverage can be reduced via a minimum equity capital requirement, which can rule out asset substitution. But this also compromises market discipline by making bank debt too safe. Optimal capital regulation requires that a part of bank capital be invested in safe assets and be attached with contingent distribution rights, in particular, be unavailable to creditors upon failure so as to retain market discipline and be made available to shareholders only contingent on good performance in order to contain risk-taking.
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Bibliographic InfoPaper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 8822.
Date of creation: Feb 2012
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Other versions of this item:
- Viral V. Acharya & Hamid Mehran & Anjan V. Thakor, 2010. "Caught between Scylla and Charybdis? Regulating bank leverage when there is rent seeking and risk shifting," Working Paper 1024, Federal Reserve Bank of Cleveland.
- Thakor, Anjan & Mehran, Hamid & Acharya, Viral V., 2010. "Caught Between Scylla and Charybdis? Regulating Bank Leverage When There is Rent Seeking and Risk Shifting," Working paper 643, Regulation2point0.
- Viral V. Acharya & Hamid Mehran & Anjan Thakor, 2010. "Caught between Scylla and Charybdis? Regulating bank leverage when there is rent seeking and risk shifting," Staff Reports 469, Federal Reserve Bank of New York.
- G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
- G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
- G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
- G35 - Financial Economics - - Corporate Finance and Governance - - - Payout Policy
- G38 - Financial Economics - - Corporate Finance and Governance - - - Government Policy and Regulation
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-03-28 (All new papers)
- NEP-BAN-2012-03-28 (Banking)
- NEP-CBA-2012-03-28 (Central Banking)
- NEP-CTA-2012-03-28 (Contract Theory & Applications)
- NEP-REG-2012-03-28 (Regulation)
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