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 view to decrease the associated fee for them—or higher but, to assist them keep away from penalties altogether.
Prepayment penalties could be a daunting subject for any mortgage skilled. It entails figuring out particular person lender insurance policies, to not point out a fair proportion of math.
But it surely doesn’t should be difficult. Under I’m going to elucidate some methods to assist improve your consolation stage with calculating prepayment penalties—and not using 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 might be if we determine to return the product. Whether or not it’s a restocking payment, a 100-day sleep assure, or a 30-day change coverage, we’re informed the phrases upfront.
We all know what we’re committing to so we will really feel as snug as attainable with our resolution.
These promoting such merchandise are intimately accustomed to these insurance policies with regards to having their product returned. Nobody desires 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 now have prepayment penalties, let’s take a look at how they differ by mortgage product:
With an open mortgage, you pay the next rate of interest in change for the pliability to repay your mortgage in full at any level with out penalty.
Open mortgages are widespread for these on the lookout for short-term financing options when the borrower intends to repay the mortgage earlier than the tip of the time period.
- Closed variable-rate mortgages
The prepayment penalty on variable-rate merchandise with a closed time period is often three months’ curiosity. The place it may possibly differ is with the rate of interest getting used for the calculation.
Most lenders use the present contract charge with the low cost obtained 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 often the better of three months’ curiosity or the Curiosity Fee 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 the next charge, prepayment penalties are typically restricted to 3 months’ curiosity. Reducing interest-rate environments have a tendency to provide bigger IRD penalties, particularly for contracts with years remaining on the mortgage time period.

Breaking down the Curiosity Fee 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 all the time being calculated, even when it’s lower than three months’ curiosity. Even when the IRD is zero or a adverse worth, it’s nonetheless being calculated.
By figuring out your rate of interest, remaining time period, steadiness, amortization, and fee frequency, the curiosity to maturity may be calculated utilizing an amortization abstract at any level throughout your time period.
Improve your fee and/or make a lump-sum fee and the curiosity to maturity will lower. It’s going to additionally decrease the reinvestment curiosity to maturity, which implies a decrease IRD than in the event you didn’t use a prepayment privilege.
So as to simplify issues, we’re going to ignore compounding curiosity and amortization for our fast calculation:
Curiosity Fee Distinction (%) x Remaining Time period (Years) = Curiosity Fee Differential (Expressed as a proportion of steadiness)
Tip: The Curiosity Fee 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 based mostly on lender kind
Monolines have a tendency to match your contract charge to the precise charges being supplied for comparable merchandise underneath 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 Fee Distinction is:
Contract Fee (5%) – Reinvestment Curiosity Fee (4%) = 1%
Banks arrange their calculations in a means that requires some further math.
They publicize posted charges, however usually give the borrower a reduction. An insured mortgage is extra more likely to have a better low cost than a traditional mortgage, for instance.
Preliminary Posted Fee (6%) – Low cost (1%) = Contract Fee (5%)
If the same time period’s posted charge is at the moment 5%, then the Curiosity Fee Distinction is:
Contract Fee (5%) – Comparable-term Posted Fee (5%) – Low cost (1%) = 1%
On this instance, the reinvestment rate of interest may be seen as:
Comparable-term Posted Fee (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 based mostly on the time remaining on the prevailing mortgage. Meaning there are set dates the place a identified 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 learn how to discover and calculate the reinvestment rate of interest and figuring out the way it can change over time.
There are solely two methods it may possibly change:
- The remaining time period decreases to trigger a change to the closest comparable time period
- The lender adjustments its reinvestment rate of interest/posted charge
The dates wherein the closest comparable time period adjustments isn’t a shock, so we may be proactive with a view 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 based mostly 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 shopper 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 most definitely 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 based mostly on as we speak’s elements?
Utilizing as we speak’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. So as to see an IRD that’s better 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. Usually, the reinvestment rates of interest for shorter phrases tends to be decrease than longer phrases. The exception could be one-year or six-month phrases.
What does this all imply?
Earlier than we even contemplate recommending a lender for our shoppers, we have to have a whole 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 steady, rising and reducing rate of interest environments? Are we a big IRD on day one or do we have to see time go or reducing charge stress earlier than an IRD better than three months’ curiosity is created?
Figuring out these solutions permits us to be proactive to our shoppers’ wants as an alternative of being reactive. The very last thing we would like is an upset shopper 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 (Subject #1, 2023)