Oct 7, 2026 · @Heidi
Life rarely lines up neatly with a five-year mortgage term. You might be selling to move closer to family, upsizing for a growing household, or downsizing now that the kids have moved out. Maybe rates have dropped and refinancing looks tempting.
Whatever the reason, ending your mortgage before the term is up usually comes with a penalty. For many of my clients, that number is the biggest surprise of the whole move. The good news is that with a little planning, you can often reduce it, and sometimes avoid it altogether.
What does breaking your mortgage mean?
Breaking your mortgage means ending your contract with your lender before the term is up. That includes paying it off when you sell, switching lenders, or refinancing to change your rate or borrow more.
Whether you pay a penalty depends on the type of mortgage you have:
Open mortgage: You can pay it off at any time with no penalty. The trade-off is a higher interest rate.
Closed mortgage: You get a lower rate in exchange for agreeing to stay for the full term. Most homeowners have this type, and breaking it early triggers a penalty.
Within closed mortgages, whether your rate is fixed or variable makes a big difference to how that penalty is calculated.
How the penalty is calculated
Variable rate: The penalty is usually three months' interest on your remaining balance. It's predictable and often fairly modest.
Fixed rate: The penalty is the greater of two amounts:
Three months' interest, or
The interest rate differential (IRD). This is roughly the interest your lender loses because you're leaving early, based on the difference between your rate and the rate it can lend at today for the time left on your term.
Here's a simple example. Say you owe $500,000 at 5.0%, with 30 months left on your term, and the lender's current rate for a similar term is 4.0%:
In this case, you'd pay the higher amount: $12,500.
A word of caution: lenders calculate the IRD differently. Some use their posted rates rather than the discounted rate you actually received, which can make the penalty much larger. The only way to know your real number is to ask your lender for a payout statement.
Ways to reduce or avoid the penalty
Port your mortgage. Many mortgages let you take your existing rate and term with you to a new home. If you're buying and selling at the same time, this can eliminate the penalty entirely. Timing matters, as lenders usually require both deals to close within a set window.
Blend and extend. Some lenders will combine your current rate with today's rate and start a new term, instead of charging a penalty.
Let your buyer assume it. If your mortgage is assumable and your rate is attractive, a qualified buyer may be able to take it over.
Use your prepayment privileges. Most closed mortgages let you pay down 10% to 20% of the original balance each year without penalty. Making a lump-sum payment before you break can shrink the balance the penalty is calculated on.
Watch your timing. The closer you are to the end of your term, the smaller the IRD tends to be. Sometimes waiting a few months makes a real difference.
Every lender's rules are different, so check your mortgage documents or speak with your lender or mortgage broker before you decide.
Selling your home? Ask these questions before you list
Your mortgage penalty comes straight out of your sale proceeds, so it affects your bottom line and sometimes your pricing strategy. Before we list, I recommend calling your lender and asking:
What would my penalty be if I paid off my mortgage on a specific date?
Is my mortgage portable, and how long do I have to port it?
Is it assumable by a buyer?
How much can I prepay this year without a penalty?
With those answers, we can plan your completion date, your next purchase and your budget with no surprises at the lawyer's office.
Thinking about a move?
If you're wondering how your mortgage fits into a sale or purchase, I'm always happy to talk it through. I work with excellent mortgage professionals and can connect you with someone who will help you find the best path forward.
Reach out anytime at heidi@heidirahn.com or visit heidirahn.com.
This article is for general information only and isn't financial advice. Please speak with your lender or a mortgage professional about your specific situation.