The Basel Accord assumes an inverse relationship between the probability of default and the asset correlation parameter, with the latter being responsible for modeling the degree of cyclicality of default rates. Previous empirical studies that embedded the formula of the Basel Accord into a...

Accounting standards require that financial institutions must measure default risk with respect to the full maturity of a financial instrument. This requires forecasting of future default probabilities. The forecast of future default probabilities concerns two aspects: forecasting macroeconomic...

This paper proposes two methodologies that are designed to test whether observed default rates are in line with default probabilities applied within the Basel framework. This is done by integrating the one-factor model of the Basel framework into the score and the order test statistic. The first...

Accounting standards require that financial institutions must measure default risk with respect to the full maturity of a financial instrument. This requires forecasting of future default probabilities. The forecast of future default probabilities concerns two aspects: forecasting macroeconomic...

Credit ratings are expert systems which assess the likelihood of a borrower to default. The Basel Accord allows banks to base regulatory capital requirements on the default probability of a rating. Banks must prove that the employed default probabilities are valid estimates. Since in credit risk...