Breaking a mortgage before renewal means ending your contract early — usually to sell, refinance, or chase a lower rate — and paying your lender a prepayment penalty. On a closed variable-rate mortgage that penalty is typically three months’ interest. On a closed fixed-rate mortgage it is usually the greater of three months’ interest or the interest rate differential (IRD), which can run far higher — and big banks often base the IRD on posted rates, making the same mortgage costlier to break with a bank than with a monoline lender. You can sometimes avoid the penalty entirely by porting your mortgage or using a blend-and-extend. Whether breaking is worth it comes down to one comparison: the penalty plus fees versus what you would save.
When breaking your mortgage feels like a trap
Maybe you have found a new home, spotted a lower rate, or need to free up some cash. Then someone mentions the word “penalty,” and a smart move suddenly feels like a trap. The fear of a surprise bill in the thousands can freeze anyone in place.
Here is the reassuring part. Breaking a mortgage is a normal, manageable decision that many Canadians make every year. The rules are set, the costs are predictable once you understand them, and there are often ways to lower the penalty or skip it.
This guide covers what actually happens when you break a closed mortgage before its term ends: how the penalty is calculated, why your choice of lender matters, and how to tell whether breaking truly saves you money. Every term is explained in plain language.
What “breaking” a mortgage actually means
Most Canadians have a closed mortgage: you keep it for a set term, often five years, in exchange for a lower rate. An open mortgage can be repaid any time without penalty, but usually at a higher rate, so it is less common.
You can break a closed mortgage in several ways: selling without porting, refinancing to borrow more, switching lenders for a better deal, or paying it off with savings. Each one ends your contract early. If the terminology is new, our mortgage glossary explains the key terms.
Quick start: pick your path
The right next step depends on why you are thinking about breaking. Find your situation below.
Whatever your path, the first step is the same: get a real number. You can estimate your penalty in a couple of minutes, then use it as you read on.
How the penalty is actually calculated
Three months’ interest is the simple one: your lender charges roughly a quarter-year of interest on your balance. On a closed variable-rate mortgage, this is normally all you pay.
The interest rate differential, or IRD, is the difference between your current mortgage rate and the rate the lender could charge today for the time left on your term. The wider the gap and the more years left, the larger the IRD.
One detail does most of the damage: the rate your lender plugs in. Some lenders calculate the IRD from their posted rates rather than the discounted rate you actually pay, which inflates the result. To shrink what you owe, our guide on how to avoid an expensive penalty covers the tactics.
Why your lender type changes the bill
Two people with nearly identical mortgages can face very different penalties, mostly because of the lender they signed with.
Big banks often calculate the IRD using their posted rates, the higher advertised numbers most borrowers never actually pay. Measured from that inflated starting point, the penalty can come out several times larger than expected.
Many monoline lenders, which are mortgage-only companies that work through brokers, tend to base the IRD on your real contract rate instead. Credit unions vary, and some use gentler formulas. So the same balance and term can mean a penalty of a few thousand dollars with one lender, or many times more with another.
This is one reason it can pay to work with a broker from the very start. Your penalty terms are set the day you sign, not the day you decide to leave.
| Lender type | Penalty method | Rate used in the IRD | Relative cost to break |
|---|---|---|---|
| Big bank | Greater of IRD or three months of interest | Posted (advertised) rate | $$$ Highest |
| Monoline lender | Greater of IRD or three months of interest | Your actual contract rate | $$ Moderate |
| Credit union | Varies by contract | Actual or blended rate | $–$$ Often lower |
The penalty-free alternatives most people miss
Porting means moving your existing rate, balance, and remaining term to a new property, so you change homes without breaking the contract. If you are buying and selling at once, you can often port your mortgage instead of breaking it.
Blend-and-extend keeps you with your current lender by blending your existing rate with a new one over a fresh term, which can lower your rate without a penalty. Many lenders also let you renew early, often up to 120 days before maturity, at no charge.
Most closed mortgages also let you prepay a set amount each year penalty-free. Making that payment before you break shrinks the balance, and a smaller balance means a smaller penalty.
Is breaking worth it? The break-even math
Start with three numbers: your penalty, the fees for the new mortgage, and the interest you would save at the new rate over the remaining time. If the savings clearly beat the combined cost, you have a case; if they are close, waiting is usually safer.
You can run a refinance scenario to see the savings, then compare it against your penalty estimate.
This is also where independent advice earns its keep. Razi Khan, Founder and Mortgage Broker at Pegasus, often runs this break-even across more than 50 lenders, since a slightly lower rate at one can flip a “not worth it” into a clear win. Because a broker is paid by the lender, that comparison is free to you.
Breaking your mortgage, step by step
Once you have decided breaking is the right move, here is the path most Canadians follow.
- 1Request your payout statementAsk your current lender, in writing, for the exact penalty plus any discharge or administrative fees. The figure can shift with rates, so get a current one.
- 2Run the numbersCompare the penalty against your expected savings, and check whether porting or a blend-and-extend would serve you better.
- 3Get pre-approved, and re-qualify if you are switchingMoving to a new lender means a new approval, which requires passing the federal stress test. That test qualifies you at the greater of contract rate plus 2% or 5.25%. You can get pre-approved in minutes to see where you stand.
- 4Choose your lender and lock the termsCompare offers across banks, credit unions, and monolines before committing.
- 5Complete the discharge and closingA lawyer, or a notary in Quebec, finalizes the paperwork and registers the new mortgage; your penalty is usually settled here.
Common mistakes that turn a smart break into an expensive one
A few avoidable errors cost Canadians thousands when they break a mortgage. Watch for these.
- Not getting the penalty in writing. A verbal estimate can change, so ask for the exact figure and the fees with it.
- Assuming every lender calculates the same way. Posted-rate IRDs can be far higher than actual-rate ones, so the formula matters as much as the rate.
- Forgetting cash-back clawback. If you received cash back at signing, you may have to repay part of it when you break, raising the true cost.
- Breaking to consolidate without comparing options. Rolling debt into your mortgage can help, but weigh it against the alternatives first; our page on how to consolidate high-interest debt explains the trade-offs.
- Ignoring discharge and administrative fees. These add to the penalty, so include them from the start.
Frequently asked questions
How much does it cost to break a fixed mortgage in Canada?
What’s the difference between the IRD and three months’ interest?
Can I avoid the penalty if I’m selling my house?
Will breaking my mortgage hurt my credit score?
Is it cheaper to break my mortgage now or wait until renewal?
Do I have to pass the stress test again if I switch lenders?
Can I add the penalty to my new mortgage instead of paying it upfront?
Why is my bank’s penalty so much higher than I expected?
See what breaking could cost — and save — you
Pegasus shops more than 50 lenders to compare your penalty against the savings, and because we are paid by the lender, our service is free to you. Prefer to talk it through first? Reach our team.
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About the author
Razi Khan
Founder, CEO & Licensed Mortgage Broker · Pegasus Mortgage Lending · Toronto, Ontario · FSRA Lic # 11479
Razi Khan is the Founder, CEO, and a licensed Mortgage Broker at Pegasus Mortgage Lending Center Inc., based in Toronto. With over 20 years of experience in the Canadian mortgage industry, Razi has personally guided more than 3,000 clients through some of the most complex and high-stakes financial decisions of their lives — from first-time purchases in the GTA to refinancing strategies, alternative lending solutions, and cross-border mortgages for Canadians buying in the United States.
Razi founded Pegasus in October 2008, launching the brokerage at the height of a global financial crisis. He works across the full spectrum of borrower profiles, with particular expertise in complex files including self-employed borrowers, credit-challenged clients, and investors building multi-property portfolios.
Learn more about Razi Khan →Sources & references
- Financial Consumer Agency of Canada — Breaking your mortgage contract. Link
- Financial Consumer Agency of Canada — Prepayment penalties and how to reduce them. Link
- OSFI — Minimum qualifying rate for uninsured mortgages. Link
- Autorité des marchés financiers (Quebec) — Penalties for breaking your mortgage. Link
- TD Canada Trust — What happens if you break your mortgage. Link
- NerdWallet Canada — The penalty for breaking a mortgage contract. Link
- Ratehub.ca — Mortgage penalty calculator. Link