We receive a transaction fee from third parties for issuing our single-family REMICs and Other Structured Securities whose underlying assets are PCs or previously issued REMICs and Other Structured Securities. We defer the portion of the transaction fee that is equal to the estimated value of our future administrative responsibilities for these issued REMICs and Other Structured Securities. These responsibilities include ongoing trustee services, administration of pass-through amounts, paying agent services, tax reporting, and other required services. We estimate the value of these future responsibilities based on quotes from third-party vendors who perform each type of service and, where quotes are not available, based on our estimates of what those vendors would charge. The remaining portion of the transaction fee relates to compensation earned in connection with structuring-related services we rendered to third parties and is allocated between REMICs and Other Structured Securities we retain, if any, and the REMICs and Other Structured Securities acquired by third parties, based on the relative fair value of the securities. The portion of the fee allocated to any REMICs and Other Structured Securities we retain is deferred as a carrying value adjustment and is amortized into interest income using the effective interest method over the contractual lives of these securities. The fee allocated to REMICs and Other Structured Securities acquired by third parties is recognized immediately in earnings as other income.
