All mortgage brokers ought to have a cushty working data of how prepayment penalties are calculated and utilized.
Our shoppers depend upon us to know the ins and outs of those often-significant penalties with a purpose to decrease the price for them—or higher but, to assist them keep away from penalties altogether.
Prepayment penalties generally is a daunting subject for any mortgage skilled. It entails figuring out particular person lender insurance policies, to not point out a justifiable share of math.
But it surely doesn’t must be sophisticated. Beneath I’m going to clarify some methods to assist enhance your consolation stage with calculating prepayment penalties—with out a prepayment calculator—in addition to the mechanics and reasoning behind them.
Prepayment penalty coverage = the lender’s return coverage
Not a single mortgage client likes the considered having to pay a mortgage penalty. However as brokers, it’s our job to tell shoppers why they exist and the way they’re essential from a lender’s perspective.
Once we purchase an equipment, a mattress and even clothes, we’re offered in easy phrases what the prices can be if we resolve to return the product. Whether or not it’s a restocking charge, a 100-day sleep assure, or a 30-day trade coverage, we’re instructed the phrases upfront.
We all know what we’re committing to so we are able to really feel as comfy as attainable with our resolution.
These promoting such merchandise are intimately acquainted with these insurance policies in terms of having their product returned. Nobody needs an sad buyer.
With mortgages, the prepayment penalty coverage is actually the lender’s return coverage that applies to closed-term mortgages.
When are prepayment penalties utilized?
Now that we perceive why we’ve got prepayment penalties, let’s have a look at how they differ by mortgage product:
With an open mortgage, you pay a better rate of interest in trade for the pliability to repay your mortgage in full at any level with out penalty.
Open mortgages are widespread for these searching for short-term financing options when the borrower intends to repay the mortgage earlier than the top of the time period.
- Closed variable-rate mortgages
The prepayment penalty on variable-rate merchandise with a closed time period is usually three months’ curiosity. The place it might differ is with the rate of interest getting used for the calculation.
Most lenders use the present contract charge with the low cost acquired off of prime, whereas some lenders use their prime charge.
On a $500,000 mortgage, prime – 1.00% can imply a further $1,250 when utilizing prime charge for the three months’ curiosity calculation.
- Closed fixed-rate mortgages
The prepayment penalty for fixed-rate mortgages with a closed time period is usually the higher of three months’ curiosity or the Curiosity Charge Differential (IRD).
An IRD penalty ensures that the lender is compensated for his or her curiosity losses after they re-loan the mortgage funds at a decrease charge than the prevailing mortgage for the rest of the mortgage time period.
In a rising interest-rate surroundings the place the lender might re-loan the mortgage funds at a better charge, prepayment penalties are typically restricted to 3 months’ curiosity. Reducing interest-rate environments have a tendency to supply bigger IRD penalties, particularly for contracts with years remaining on the mortgage time period.

Breaking down the Curiosity Charge Differential
Rate of interest differential may be seen because the “curiosity to maturity” minus the “reinvestment curiosity to maturity.”
With closed fixed-rate mortgages, the IRD is at all times being calculated, even when it’s lower than three months’ curiosity. Even when the IRD is zero or a unfavorable worth, it’s nonetheless being calculated.
By figuring out your rate of interest, remaining time period, stability, amortization, and cost frequency, the curiosity to maturity may be calculated utilizing an amortization abstract at any level throughout your time period.
Improve your cost and/or make a lump-sum cost and the curiosity to maturity will lower. It’ll additionally decrease the reinvestment curiosity to maturity, which suggests a decrease IRD than if you happen to didn’t use a prepayment privilege.
With a view to simplify issues, we’re going to ignore compounding curiosity and amortization for our fast calculation:
Curiosity Charge Distinction (%) x Remaining Time period (Years) = Curiosity Charge Differential (Expressed as a share of stability)
Tip: The Curiosity Charge Distinction is the distinction between the contract charge and the reinvestment rate of interest for a mortgage of an analogous time period.
How prepayment penalties are calculated primarily based on lender sort
Monolines have a tendency to match your contract charge to the precise charges being provided for comparable merchandise beneath the classes of insured, insurable and standard.
In case your contract charge is 5% and the reinvestment rate of interest is 4%, then the Curiosity Charge Distinction is:
Contract Charge (5%) – Reinvestment Curiosity Charge (4%) = 1%
Banks arrange their calculations in a manner that requires some further math.
They publicize posted charges, however usually give the borrower a reduction. An insured mortgage is extra prone to have a higher low cost than a standard mortgage, for instance.
Preliminary Posted Charge (6%) – Low cost (1%) = Contract Charge (5%)
If the same time period’s posted charge is presently 5%, then the Curiosity Charge Distinction is:
Contract Charge (5%) – Related-term Posted Charge (5%) – Low cost (1%) = 1%
On this instance, the reinvestment rate of interest may be seen as:
Related-term Posted Charge (5%) – Low cost (1%) = 4%

Figuring out the closest comparable time period
Most lenders have a chart that lets you decide the comparable time period primarily based on the time remaining on the prevailing mortgage. Which means there are set dates the place a recognized change to the reinvestment rate of interest might happen.
Figuring out the reinvestment rate of interest
The largest problem for a lot of brokers is figuring out how you can discover and calculate the reinvestment rate of interest and figuring out the way it can change over time.
There are solely two methods it might change:
- The remaining time period decreases to trigger a change to the closest comparable time period
- The lender modifications its reinvestment rate of interest/posted charge
The dates wherein the closest comparable time period modifications shouldn’t be a shock, so we may be proactive with a purpose to assist our shoppers.
For reinvestment rates of interest, they’ll change at any time, although we typically know if they’re trending up or down primarily based on the bond markets.
When the reinvestment rate of interest is significantly decrease than your precise contract charge, we are inclined to see bigger IRD prepayment penalties. Particularly when the borrower has years remaining on their mortgage time period.
Think about that your consumer determined to interrupt their mortgage on day one of many contract. What sort of prepayment penalty would they be going through?
If it’s an IRD, then your lender has probably used reinvestment rates of interest that aren’t tied to any of their precise mortgage merchandise.
By definition, the prepayment penalty ought to be three months’ curiosity on day one, not an IRD. If a lender is poised to cost you an IRD day one, then they’re utilizing reinvestment rates of interest which are significantly decrease than their product choices.
In case you are not in IRD territory on day one, what about after a yr or two primarily based on immediately’s components?
Utilizing immediately’s rates of interest/reinvestment rates of interest, we’re monitoring solely a three-month curiosity penalty with some lenders at each level over the course of the mortgage time period. With a view to see an IRD that’s higher than three months’ curiosity we must see their reinvestment rates of interest lower.
With banks, we are typically in IRD territory after six months, as soon as the comparable rate of interest is decrease than the unique mortgage time period. Typically, the reinvestment rates of interest for shorter phrases tends to be decrease than longer phrases. The exception can be one-year or six-month phrases.
What does this all imply?
Earlier than we even think about recommending a lender for our shoppers, we have to have an entire understanding of how their reinvestment rates of interest are calculated and the place they’re posted. We have to perceive the lender’s return coverage.
How do they alter over the course of a mortgage time period in secure, rising and reducing rate of interest environments? Are we a big IRD on day one or do we have to see time cross or reducing charge strain earlier than an IRD higher than three months’ curiosity is created?
Understanding these solutions permits us to be proactive to our shoppers’ wants as an alternative of being reactive. The very last thing we wish is an upset consumer after they see the true price of returning their mortgage early.
Opinion items and views expressed are these of respective contributors and don’t symbolize the views of the writer and its associates.
This text was first revealed in Views journal (Situation #1, 2023)