# What is prepayment speed?

## What is prepayment speed?

Prepayment speed. Also called speed, the estimated rate at which mortgagors pay off their loans ahead of schedule, critical in assessing the value of mortgage pass-through securities.

## What does the conditional prepayment rate of 8% mean?

Pools of mortgages, student loans, and pass-through securities all use the CPR as estimates of prepayment. For example, if a pool of mortgages has a CPR of 8%, that suggests that 8% of the pool’s outstanding principal will be paid off prematurely in a given year.

How are prepayment rates calculated?

To estimate monthly prepayments, the CPR must be converted into a monthly prepayment rate, commonly referred to as the single-monthly mortality rate (SMM). A formula can be used to determine the SMM for a given CPR: SMM=1-(1-CPR)/12.

What is the prepayment formula?

Divide the number of months remaining in your mortgage by 12 and multiply this by the first figure (if you have 24 months remaining on your mortgage, divide 24 by 12 to get 2). Multiply 4,000 * 2 = \$8,000 prepayment penalty.

### What is CDR and CPR?

December 14th, 2018. Similar concept to CPR for prepayments CDR measures the percentage of mortgage loans that default in a pool of mortgages on an annualized basis. However, the actual losses are based on the Loss Severity which estimates the loan principal lost each month to default.

### How is SMM prepayment calculated?

Calculating Prepayment The SMM can be used to calculate a dollar amount for the monthly principal prepayment. Prepayment ith month (\$) = SMM * (Principal Bal.

What is SMM rate?

Single monthly mortality (SMM) is a measure of the prepayment rate of a mortgage-backed security (MBS). As the term suggests, the single monthly mortality measures prepayment in a given month and is expressed as a percentage.

Why do banks have prepayment penalties?

What Is A Prepayment Penalty? A mortgage prepayment penalty is a fee that some lenders charge when you pay all or part of your mortgage loan term off early. The penalty fee is an incentive for borrowers to pay back their principal slowly over a full term, allowing mortgage lenders to collect interest.

#### How does the 100% PSA prepayment model work?

The standard model (also called “100% PSA”) works as follows: Starting with an annualized prepayment rate of 0.2% in month 1, the rate increases by 0.2% each month, until it reaches 6% in month 30. From the 30th month onward, the model assumes an annualized prepayment rate of 6% of the remaining balance.

#### How is a constant percent prepayment rate calculated?

One basic prepayment model is constant percent prepayment (CPP), which is an annualized estimate of mortgage loan prepayments, computed by multiplying the average monthly prepayment rate by 12. This is used to determine cash flow in structured finance transactions, often referred to as the secondary mortgage market.

What are the assumptions in a 100% prepayment model?

The standard model, 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. 150% PSA would assume 0.3% (1.5 x 0.2%) increases to a peak of 9%, and 200% PSA would assume 0.4% (2 x 0.2%) increases to a peak of a 12% prepayment rate.

Who is an expert in the prepayment model?

Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech and strategic finance in top universities. She has been an investor, an entrepreneur and an adviser for 25 + years in the US and MENA. What Is a Prepayment Model? 