This paper empirically investigates the impact of internal ratings-based (IRB) approach on the risk weight under Basel II. Assuming increasing cost of raising new capital when the requirement constraint is violated, this paper estimates the difference of unknown risk weight parameters between...

The incremental risk charge (IRC) is a new regulatory requirement from the Basel Committee in response to the recent financial crisis. Notably few models for IRC have been developed in the literature. This paper proposes a methodology consisting of two Monte Carlo simulations. The first Monte...

The internal ratings-based (IRB) approach maps bank risk profiles more adequately than the standardized approach. After switching to IRB, banks' risk-weighted asset (RWA) densities are thus expected to diverge, especially across countries with different supervisory strictness and risk levels....

The novel partial-use philosophy by the Basel Committee on Banking Supervision initiates a paradigm shift for banks, allowing them to permanently partially apply the internal ratings-based approach (IRBA) and not having to fully roll it out across the overall bank anymore. This raises the...

Choosing a proper external risk measure is of great regulatory importance, as exemplified in the Basel II and Basel III Accord which use Value-at-Risk (VaR) with scenario analysis as the risk measures for setting capital requirements. We argue a good external risk measure should be robust with...

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...

Under the new Basel II regulatory framework, the need for an effective risk-adjusted pricing mechanism has become even more central in banking than in the past: banks are spurred to develop risk-adjusted measures, to avoid wasteful customers' cross-subsidization and support the value creation...

Using supervisory data for US banks, we evaluate the alignment of Basel II/III AIRB (Advanced Internal Ratings Based) risk estimates with portfolio risk. We use loan performance as a direct measure of portfolio risk as well as less direct market-based measures. Our results document that loan...

We present a model where bank assets are a portfolio of risky debt claims and analyze stockholders' risk-taking behavior while considering the strategic interaction between debtors and creditors. We find that: (1) as the leverage of a bank increases, risk shifting by borrowers increases, even if...

We empirically assess the sensitivity of Basel risk weights to bank portfolio risk and the business cycle. With our econometric model, we distinguish between cross-sectional risk sensitivity and longitudinal risk sensitivity (cyclicality) of the regulatory standard. Employing a comprehensive...