In this article, the author proposes the basis for decomposition of the structured derivatives payouts that provides an opportunity to calculate, inside of the common procedure, the fair (theoretical) value of structured derivative and provides a processing capability for work with it in terms of differential operators. Moreover, the basis is needed to the structured products development. The proposed model is intriguing within the context of unique framework absence for the structured derivatives pricing that is consistent with market usage. The main object for the model verification is an author’s product The Barrier Bermuda Foreign Exchange (EURUSD) INTERESTing swaption.