Assessing bank's default probability using the ASRF model

In this paper it is shown how a Vasicek-model approach and the assumptions in Basel 2 regulatory framework can be used to develop measures of the probability of banks' failure. The Basel 2 framework is based on a Vasicek-model approach. The estimation of the propose measure of bank probability of default could be made over the capital ratio from supervisory authorities (non-public information) or over the capital ratio from balance sheet data (public available information).