Bank leverage, capital requirements and bank's implied cost of (equity) capital


Schmidt, Christian



Document Type: Conference presentation
Year of publication: 2018
Conference title: Barcelona GSE Banking Summer School 2018
Location of the conference venue: Barcelona, Spain
Date of the conference: 02.-06.06.2018
Publication language: English
Institution: Business School > ABWL, Risikotheorie, Portfolio Management u. Versicherungswissenschaft (Albrecht)
Subject: 330 Economics
Classification: JEL: C33, G21, G28, G32,
Individual keywords (German): Verschuldung von Banken , Implizite Kapitalkosten , EBA Capital Exercise , Capital Requirements , Bank Regulation , Modigliani-Miller
Keywords (English): Bank Leverage , Implied Cost of Capital , EBA Capital Exercise , Capital Requirements , Bank Regulation
Abstract: Do heightened capital requirements impose private costs on banks by adversely affecting their cost of capital? And if so, does the effect differ across different groups of banks? Using an international sample of listed banks over the period from 1990 to 2017, I find that equity investors adjust their expected return weakly in accordance with the Modigliani and Miller (1958) Theorem when banks decrease their leverage. The adjustment is stronger for smaller banks, banks that rely more on deposit financing and when debt is reduced rather than deposits, which never triggers a statistically significant adjustment. In any cases, the adjustment is not strong enough to keep banks' cost of capital constant which is estimated to increase by 10 to 40bps, representing a relative increase of 2.8% to 12.6%, when shifting equity from 8% to 16%. When using the 2011 EBA capital exercise as a quasi-natural experiment to identify the impact of capital regulation on bank's cost of capital, results indicate a strong reduction in required returns for the treated banks. However, the reduction is mainly caused by shifts in asset risk, highlighting the importance of differentiating between short-run and long-run effects.




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Schmidt, Christian Bank leverage, capital requirements and bank's implied cost of (equity) capital. (2018) Barcelona GSE Banking Summer School 2018 (Barcelona, Spain) [Conference presentation]


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