von Lieres und Wilkau, CarstenWeißbach, Rafael2006-01-252006-01-252006-01-25http://hdl.handle.net/2003/2213910.17877/DE290R-2640Most credit portfolio models calculate the loss distribution of a portfolio consisting solely of performing counterparts. We develop two models that account for defaulted counterparts in the calculation of the economic capital. First, we model the portfolio of non-performing counterparts standalone. The second approach derives the integrated loss distribution for the non-performing and the performing portfolio. Both calculations are supplemented by formulae for contributions of the single counterpart to the economic capital. Calibrating the models allows for an impact study and a comparison with Basel II.JEL subject classifications. C51, G11, G18, G33Most credit portfolio models calculate the loss distribution of a portfolio consisting solely of performing counterparts. We develop two models that account for defaulted counterparts in the calculation of the economic capital. First, we model the portfolio of non-performing counterparts standalone. The second approach derives the integrated loss distribution for the non-performing and the performing portfolio. Both calculations are supplemented by formulae for contributions of the single counterpart to the economic capital. Calibrating the models allows for an impact study and a comparison with Basel II. JEL subject classifications. C51, G11, G18, G33enSonderforschungsbereich 475;02/06Basel IICredit portfolio modelImpact studyLoss distributionNon-performing portfolioPerforming portfolio004report