Get Commercial Loan Prepayment Behaviors: Knowledge Is Profit

The PSA model assumes increasing prepayment rates for the first 30 months and then constant prepayment rates afterward. The standard model, which is also referred to as 100% PSA or 100 PSA, assumes that prepayment rates will increase by 0.2% for the first 30 months until they peak at 6% in month 30.

Many lenders charge a prepayment fee based on a percentage of interest paid within a certain time period, perhaps six months. For example, a common penalty is 80 percent of six months' interest.

Prepayment is the paydown of principal of a mortgage pass-through in a given month that exceeds the amount of its scheduled amortization for that month. The rate of prepayment is, therefore, the excess paydown in a given month as a percentage of the outstanding principal balance at the beginning of the month.

CPR = 1 - (1 - SMM)^(12) This formula is used to annualize the monthly SMM in order to obtain the Conditional Prepayment Rate (CPR). The CPR is an annual measure representing the estimated percentage of a loan pool's principal that is expected to be prepaid ahead of schedule in a given year.

The PSA model assumes increasing prepayment rates for the first 30 months and then constant prepayment rates afterward. The standard model, which is also referred to as 100% PSA or 100 PSA, assumes that prepayment rates will increase by 0.2% for the first 30 months until they peak at 6% in month 30.

To calculate CRP, divide the annualized rate of monthly prepayments by the outstanding balance at the beginning of the period.

Prepayment penalties are a standard feature of most fixed-rate commercial loans, and they can have a significant impact on the total cost of paying off a loan.

A 3-2-1 prepayment penalty, otherwise known as a 3 year stepdown prepayment penalty, charges a 3% fee on the outstanding principal loan balance if the loan is paid off in year 1, a 2% fee in year 2, and a 1% fee in year 3.