A banking union limits international bank default contagion, eliminating inefficient liquidations. For particularly low short term returns, it also stimulates interbank flows. Both effects improve welfare. An undesirable effect arises for moderate moral hazard, as the banking union encourages...

We study a politician's choice for state or private control of banks. The choice trades of lobbying contributions against social welfare, weighted by political accountability.Politicians facing few constraints prefer state control to maximize their rents. As state banks are less efficient, at...

We study the effect of going-concern contingent capital on bank risk choice. The possibility of debt for equity conversion forces deleveraging in highly levered states, when risk incentives are worse. The additional equity reduces endogenous risk shifting by diluting returns in high states. An...

Bank holding companies (BHCs) invest in risky projects through bank entities or sell projects for a fee, thus engaging in shadow banking. BHCs can increase their fee income by guaranteeing sold projects with a recourse to the bank's balance sheet. When the expected guarantee repayments depend on...

Entry requires external finance, especially for less wealthy entrepreneurs, so poor investor protection limits competition. We model how incumbents lobby harder to block access to finance to entrants when politicians are less accountable to voters. In a broad cross-section of countries and...

This paper deals with the relation between excessive risk taking and capital structure in banks. Examining a quarterly dataset of U.S. banks between 1993 and 2010, we find that equity is valued higher when more risky portfolios are chosen when leverage is high, and that more risk taking has a...

We investigate actual capital chosen by banks in presence of capital minimum requirements and ex-post penalties for violating them. The model yields excess capital that is always positive and increases during times of distress in the economy, which is in line with empirical evidence. Next, we...

In this paper, we develop a new capital adequacy buffer model (CABM) which is sensitive to dynamic economic circumstances. The model, which measures additional bank capital required to compensate for fluctuating credit risk, is a novel combination of the Merton structural model which measures...

We study the dependence between the downside risk of European banks and insurers. Since the downside risk of banks and insurers differs, an interesting question from a supervisory point of view is the risk reduction that derives from diversification within large banks and financial...

Under the new Capital Accord, banks choose between two different types of risk management systems, the standard or the internal rating based approach. The paper considers how a bank's preference for a risk management system is affected by the presence of supervision by bank regulators. The model...