Capital Requirements, Market Power and Risk-Taking in Banking

36 Pages Posted: 14 Feb 2003

See all articles by Rafael Repullo

Rafael Repullo

Centre for Monetary and Financial Studies (CEMFI); Centre for Economic Policy Research (CEPR); European Corporate Governance Institute (ECGI)

Date Written: January 2003

Abstract

This Paper presents a dynamic model of imperfect competition in banking where banks can invest in a prudent or a gambling asset. We show that if intermediation margins are small, the banks' franchise values will be small, and in the absence of regulation only a gambling equilibrium will exist. In this case, either flat-rate capital requirements or binding deposit rate ceilings can ensure the existence of a prudent equilibrium, although both have a negative impact on deposit rates. Such impact does not obtain with either risk-based capital requirements or non-binding deposit rate ceilings, but only the former are always effective in controlling risk-shifting incentives.

Keywords: Bank regulation, capital requirements, deposit rate ceilings, moral hazard, risk-shifting, imperfect competition, franchise values

JEL Classification: D43, G21, G28

Suggested Citation

Repullo, Rafael, Capital Requirements, Market Power and Risk-Taking in Banking (January 2003). CEPR Discussion Paper No. 3721. Available at SSRN: https://ssrn.com/abstract=380103

Rafael Repullo (Contact Author)

Centre for Monetary and Financial Studies (CEMFI) ( email )

Casado del Alisal 5
28014 Madrid
Spain
+34 91429 0551 (Phone)
+34 91429 1056 (Fax)

HOME PAGE: http://www.cemfi.es/~repullo/

Centre for Economic Policy Research (CEPR)

London
United Kingdom

European Corporate Governance Institute (ECGI)

c/o ECARES ULB CP 114
B-1050 Brussels
Belgium

HOME PAGE: http://www.ecgi.org

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