Public Securities Association Standard Prepayment Model - PSA

外汇网2021-06-19 13:53:04 336

An assumed monthly rate of ppayment that is annualized to the outstanding principal balance of a mortgage loan.

|||The PSA model is one of several models used to calculate and manage ppayment risk. The PSA model acknowledges that ppayment assumptions will change during the life of the obligation and affect the yield of the security. The model assumes a gradual rise in ppayments, which peaks after 30 months. The standard increase amount is 0.2%, so an indicator of 100% implies that the rate will increase monthly by 0.2% (the standard increase), whereas an indicator of 0% implies no monthly changes of the ppayment rate.

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