Mark-to-market Accounting - Marking-to-market A Derivatives Position

Marking-to-market A Derivatives Position

In marking-to-market a derivatives account, at pre-determined periodic intervals, each counterparty exchanges the change in the market value of their account in cash. For Over-The-Counter (OTC) derivatives, when one counterparty defaults, the sequence of events that follows is governed by an ISDA contract. When using models to compute the ongoing exposure, FAS 157 requires that the entity consider the default risk ("nonperformance risk") of the counterparty and make a necessary adjustment to its computations.

For exchange traded derivatives, if one of the counterparties defaults in this periodic exchange, that counterparty's account is immediately closed by the exchange and the clearing house is substituted for that counterparty's account. Marking-to-market virtually eliminates credit risk, but it requires the use of monitoring systems that usually only large institutions can afford.