Mortgage penalty in Quebec in 2026: how much does breaking your mortgage cost?
In Quebec in 2026, breaking a closed mortgage before the end of the term costs the greater of two amounts: three months' interest or the interest rate differential (IRD). On a $350,000 balance, the bill ranges from about $4,331 on a variable rate to $15,750 on a fixed rate in the worked example below.
Selling, refinancing or switching lenders mid-term almost always triggers this penalty, which often runs into several thousand dollars. The problem: most borrowers discover it at the notary's office, when it is too late to negotiate. Here is how it is calculated, how to estimate it yourself before calling your lender, and how to legally reduce it.
Estimate your payment before deciding: enter your balance, your current rate and the rate you are being offered in our Quebec mortgage calculator. If the monthly saving does not cover the penalty calculated below, breaking your term is probably not worth it.
When do you pay a mortgage prepayment penalty?
You pay a penalty as soon as you exit a closed contract before the end of the term: extra payments beyond your annual prepayment privilege, transferring your mortgage to another lender, paying off the loan in full before maturity — for example when you sell your home — or breaking the contract to refinance at a lower rate.
The Financial Consumer Agency of Canada (FCAC) confirms the penalty applies in these four situations, and it can cost thousands of dollars. Two important exceptions:
- Open mortgage: you can repay in full at any time with no penalty — in exchange for a higher rate.
- End of term: at renewal, there is no penalty. You can repay, switch lenders or negotiate freely, as explained in our 2026 mortgage renewal guide.
Your contract sets out your prepayment privileges (often 10% to 20% of the original amount per year, depending on the lender). The FCAC notes that this privilege is annual: the unused portion generally does not carry over to the following year.
How is the penalty calculated on a fixed-rate mortgage?
For a closed fixed-rate mortgage, the lender calculates two amounts and charges you the higher one: three months' interest on the balance, or the interest rate differential (IRD). For a closed variable-rate mortgage, the penalty is generally limited to three months' interest.
| Method | Simplified formula | When it dominates |
|---|---|---|
| Three months' interest | Balance × contract rate ÷ 12 × 3 | Variable rates; recent or stable fixed rates |
| Interest rate differential (IRD) | Balance × (posted rate at signing − current posted rate for the remaining term) × years remaining | Fixed rates when rates have fallen since signing |
The IRD trap, flagged by Quebec's Autorité des marchés financiers (AMF): the calculation uses posted rates, not just the discounted rate you actually pay. Your lender may compare the posted rate when you signed with today's posted rate for a term equal to the time remaining — sometimes minus the discount you originally received. Two borrowers with the same balance and the same contract rate can therefore face very different penalties depending on their lender. Your mortgage contract contains the exact method: demand the written calculation detail before accepting the amount.
The 2026 backdrop makes this calculation highly sensitive: the Bank of Canada has held its policy rate at 2.25% since the start of the year, and its next decisions land on Wednesday, October 28 and Wednesday, December 9, 2026. If fixed rates fall after you buy, your IRD swells; if they rise, it melts away, sometimes down to the three-months'-interest floor. Follow the schedule on our next Bank of Canada announcement page.
How much does it cost to break a $350,000 mortgage in 2026?
Here is an example calculated for this article. Remaining balance: $350,000. Five-year fixed term signed at a posted rate of 6.00% with a contract rate of 5.00%. Three years remain, and your lender's current posted rate for a 3-year term is 4.50%.
| Calculation | Detail | Result |
|---|---|---|
| Three months' interest | $350,000 × 5.00% ÷ 12 × 3 | $4,375 |
| Interest rate differential (IRD) | $350,000 × (6.00% − 4.50%) × 3 years | $15,750 |
| Penalty charged (the higher amount) | $15,750 |
The same balance on a closed variable rate, at 4.95%, would give only three months' interest: $350,000 × 4.95% ÷ 12 × 3 = $4,331.25, or about $4,331. The gap between the two situations exceeds $11,000 — the type of loan, far more than the balance, decides the bill. Before comparing purchase or refinance scenarios, redo these two calculations with your own numbers, then check the resulting payment in our Quebec mortgage calculator and the cash needed in our down payment calculator.
Is breaking your mortgage for a lower rate worth it?
Rarely as much as people hope, because the IRD is designed to claw back the saving the rate drop would have given you. If you refinance exactly at your lender's comparison rate (4.50% in the example), your gross interest saving over the remaining 3 years is roughly the same size as the $15,750 IRD — before adding any fees. The net gain is therefore close to zero, or even negative.
Breaking only makes sense if one of these conditions holds:
- your new rate is well below the comparison rate used by your current lender;
- little time remains in your term (the IRD shrinks with every passing month);
- you are borrowing more for a project that would otherwise cost more to finance elsewhere;
- you are selling anyway: the penalty becomes a transaction cost to build into your price, not a choice.
Run the full test: penalty plus fees (see the next section) against the real interest saving over the remaining term, calculated on the declining balance. Our article on Quebec mortgage payments shows how the balance and interest evolve year by year.
How can you reduce or avoid the mortgage penalty?
Four legal levers reduce the bill, and both the FCAC and the AMF recommend them. The most effective: use your prepayment privilege before breaking the contract, because the penalty is calculated on the remaining balance.
Concretely, in the example above, prepaying $35,000 penalty-free before the break lowers the balance to $315,000: the IRD falls to $315,000 × 1.50% × 3 = $14,175, a $1,575 saving on the penalty, on top of the interest saved on the $35,000 repaid. Check the allowed window, though: some lenders restrict prepayments shortly before a discharge.
- Port your mortgage: if you buy another home, your rate and conditions follow you, with no contract break — confirm with your lender.
- Blend and extend: your lender may average your current rate with today's rate and extend the term, with no formal penalty.
- Wait for the end of term: a few months before maturity, waiting often costs less than the IRD.
- Choose the right contract up front: a shorter term or a variable rate if your situation may change (sale, separation, move).
What fees are added to the penalty in Quebec?
The penalty is not the only cost. The AMF notes that administration fees and, in some cases, reinvestment fees are added depending on the lender. In Quebec, discharging a mortgage goes through a notary, which adds fees to include in your total.
Watch cash back received at signing as well: if your lender paid you cash back (for example to cover the notary), it can reclaim a pro-rated share based on the time remaining. The AMF's example: $2,000 of cash back on a 5-year term, broken after 1 year, adds $1,600 to repay (the remaining 4/5). Add everything up — penalty, fees, cash back to repay — before comparing with the expected saving: that total, not the penalty alone, decides whether breaking is worth it.
Frequently asked questions
How much does it cost to break a mortgage in Quebec in 2026?
For a closed mortgage, the penalty is the greater of two amounts: three months' interest or the interest rate differential (IRD). On a $350,000 fixed-rate balance, our worked example gives $15,750 (IRD) versus $4,375 (three months). On a closed variable rate, the penalty is generally limited to three months' interest, about $4,331 on the same balance at 4.95%. The exact amount depends on your lender and your contract.
What is the difference between three months' interest and the interest rate differential?
Three months' interest = balance × contract rate ÷ 12 × 3: a simple, predictable calculation. The interest rate differential (IRD) measures the lender's lost income: balance × the gap between the posted rate at signing and today's posted rate for the remaining term × years remaining. When rates have fallen since you signed, the IRD far exceeds three months' interest; when they have risen, the three-month amount applies instead.
Do you pay a penalty when you sell your home before the end of the term?
Yes, if your mortgage is closed: selling and repaying the loan before maturity triggers the penalty, as the FCAC confirms. Two ways to avoid it: port your mortgage to your new home if your lender allows it, or check whether the buyer can assume your mortgage. If neither is possible, build the estimated penalty into your sale price and your moving budget from the start.
Can you negotiate or dispute a mortgage penalty?
The amount flows from your contract, but you can demand the written calculation detail: the FCAC notes that federally regulated institutions must explain the method and the factors used, in clear language. Check the rates used (posted or discounted), the comparison term and the balance. A wrong rate or date changes the result by thousands of dollars. If a dispute persists, the AMF in Quebec and the FCAC federally accept complaints.
How do you avoid a large penalty on your next purchase?
Match the term to your real odds of moving: if a sale, separation or relocation is plausible within 3 years, a 3-year term or a closed variable rate (penalty limited to three months' interest) lowers the risk. Also compare IRD calculation methods between lenders before signing: at the same rate, a lender that uses the discounted rate rather than the posted rate can mean thousands of dollars less if you ever break the contract.
Is the mortgage penalty tax deductible?
For your principal residence, no: the penalty is a non-deductible personal cost. For a rental property, the picture differs: borrowing costs, including some prepayment penalties, may be deductible against rental income or treated under the borrowing-cost rules. Because federal and Quebec rules differ depending on the property's use, confirm your situation with Revenu Québec or a tax professional before claiming anything.