There are a number of possible models for estimating the expected loss and capital requirement. Popular pricing models for this approach work on the premise that financial guarantees are equivalent to another financial instrument and pricing the alternative, for example, treating the guarantee as a put option and using option pricing models, credit default swap pricing models, etc. For instance, publicly available data of credit default swaps spreads may be used to approximate the default risk associated to the borrowing and, therefore, the guarantee fee. When using this type of data, the identification of the default event (e.g. bankruptcy) is central to the comparability analysis between the controlled transaction and the potentially comparable credit default swap (See Section C.1.2, on the reliability of credit default swap data) ...

Credit default swaps reflect the credit risk linked to an underlying financial asset. In the absence of information regarding the underlying asset that could be used as a comparable transaction, taxpayers and tax administrations may use the spreads of credit default swaps to calculate the risk premium associated to intra-group loans ...