The first objective of this paper is to apply the model of Barth (1999) to the numerical generation of credit loss distributions of a portfolio consisting entirely of interest rate swaps. The different possibilities for modelling the response function, which gives the impact of a interest rate change onto the credit default probability, is the main subject of this investigation. The second objective is the discussion of several measures for the risk-based capital, needed to back the portfolio. The focus is on the suitablility of these measures to an analysis of worst case scenarios. While two measures for the risk-based capital are based on percentiles, the third measure is a coherent measure. These measures are applied to the analysis of the data generated by the model in regard to the modelling of the response function.
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