What a prepayment penalty is, and when it applies
A prepayment penalty is a charge a lender applies when you pay off more of a closed mortgage than your contract permits, or when you pay the mortgage off entirely before the term ends. It exists because the lender priced your mortgage on the assumption that it would earn interest on your balance for a set period. When you break that assumption, the lender recovers part of the difference.
Not every early payment triggers a penalty. Most mortgages include prepayment privileges: a defined amount of extra payment you can make each year, and often the option to increase your regular payment or pay a lump sum, without a charge. A penalty normally applies only to the amount that goes beyond those privileges. Pay off an entire closed mortgage mid-term, and the penalty applies to the whole balance.
Two details decide almost every case: whether your mortgage is open or closed, and whether your rate is fixed or variable. Open mortgages let you prepay without a penalty, but they typically carry a higher rate, so the flexibility is paid for elsewhere. Closed mortgages generally offer a lower rate and restrict prepayment. Fixed-rate and variable-rate closed mortgages are usually not treated the same way when the term is broken.
How penalties are calculated on fixed-rate mortgages
There is no single national formula. Penalty calculations are set by the lender and written into your mortgage contract, so the only authoritative answer for your situation is the one in your own documents. That said, most fixed-rate penalties are built on one of two ideas, or on the greater of the two.
The first is a set period of interest. The lender charges roughly what it would have earned on your balance over a defined number of months, regardless of what rates have done since you signed.
The second is an interest rate differential, usually shortened to IRD. The lender compares the rate on your contract with the rate it could now charge for a mortgage with a similar remaining term, then applies that difference to your balance over the time left on your term. When rates have fallen since you signed, the gap is wider and the IRD is larger. When rates have risen, the IRD can be small or nothing, and the lender usually falls back on the set period of interest instead.
Two structural details matter here. Canadian fixed-rate mortgages are compounded semi-annually by law, which affects how the interest portion of a penalty is calculated. And the remaining term, not the original term, drives the numbers, so a penalty in the final months of a term is normally much smaller than one taken in the first year.
The Financial Consumer Agency of Canada publishes plain-language guidance on mortgages, including prepayment penalties and the questions to ask your lender about how a penalty is calculated. That page is a reasonable starting point before you call your lender about a payout statement.
| Mortgage type | Prepayment flexibility | What the penalty is usually based on | Where to confirm |
|---|---|---|---|
| Fixed-rate closed | Limited to the privileges in your contract | Either a set period of interest or an interest rate differential, often the greater of the two | Your mortgage contract and the lender's penalty disclosure |
| Variable-rate closed | Limited to the privileges in your contract | Often a smaller charge tied to interest, but the contract governs | Your mortgage contract |
| Open mortgage | Prepay freely | Generally no penalty for prepayment | Your mortgage contract |
| Secured line of credit or home equity line | Usually revolving, but check the terms | Depends on how the credit agreement defines repayment and any conversion to a term loan | Your credit agreement |
Prepayment privileges: what to look for in your contract
Privileges vary widely between lenders and products, which is one reason comparing mortgages on rate alone misses part of the cost. The clauses to find in your commitment letter or mortgage contract are:
- The annual lump-sum privilege. How much you can pay each year without a penalty, and whether the year runs on the calendar or on your anniversary date.
- The payment increase privilege. Whether you can raise your regular payment, by how much, and whether the increase can be reversed later.
- Double-up or match-a-payment options. Whether extra payments are applied directly to principal or handled some other way.
- Portability and blend-and-extend. Whether you can move the mortgage to a new property or renegotiate the rate without triggering a penalty.
- The penalty formula itself. Your contract should state how a penalty is calculated, not merely that one may apply.
- Whether privileges reset. Some reset every year, and some do not let unused room carry forward.
Different products, different rules: payday loans, refinancing and credit lines
Prepayment penalties are mainly a mortgage and closed-term loan concept. Other kinds of Canadian borrowing work differently, and confusing the two leads to poor decisions.
Payday advance loans Canada-wide are short-term, small-balance products, generally up to $1,500 for a term of 62 days or less. Where a province operates a licensed payday lending regime, the federal Payday Lending Regulations (SOR/2024-114) cap the cost of borrowing at $14 per $100 advanced, and some provinces set a lower cap that then applies. Quebec does not license payday lending at all, which effectively prohibits the model there. Because these loans are normally repaid on a single date rather than amortized, the idea of prepaying to save interest barely applies; the cost is largely fixed at the outset. For consumer credit generally, the Criminal Code criminal rate of interest is 35% per year, and lending in Canada is licensed provincially, so the regulator and the rules differ depending on where you live and who is lending.
A refinance loan is a different situation, and a loan refinance loan secured against property follows yet another set of rules. When you refinance your mortgage, you replace the existing mortgage with a new one and the old one is discharged. That discharge is a prepayment, so the penalty question surfaces at exactly the moment you are trying to lower your costs. A loan refinance can still make sense when the penalty plus the new lender's costs is smaller than the savings over the remaining term, but that comparison has to include the penalty, discharge and legal costs, any new lender fees, and the interest you will pay over the new term, not just the new rate.
Home equity lines of credit sit in between. At federally regulated lenders, a home equity line of credit is generally limited to 65% of appraised property value, with total secured lending usually capped at 80%. Federally regulated mortgage lenders generally work to a total debt service ratio ceiling of about 44% and qualify an uninsured mortgage at the greater of the contract rate plus 2 percentage points and 5.25%, as set out in OSFI Guideline B-20. Those qualification rules matter when you refinance, because the new mortgage is underwritten from scratch.
The Bank of Canada publishes the policy interest rate, the prime rate, conventional mortgage rates and Government of Canada benchmark bond yields. These are benchmarks, not offers, and no lender is obliged to lend at them. They are still useful context for understanding why an interest rate differential moves, since that figure depends on where current rates sit relative to the rate on your contract.
How to check your own prepayment penalty
- Find your mortgage contract or commitment letter and read the prepayment clause in full, not just the summary on the first page.
- Identify whether your mortgage is open or closed, and whether the rate is fixed or variable.
- Write down your privileges: the annual lump-sum limit, the payment increase option, and whether unused room carries forward.
- Ask your lender for a written payout statement that separates the balance, the penalty, discharge fees and any interest adjustment.
- Ask which method produced the penalty and request the calculation in writing, including the rate the lender used for any interest rate differential.
- Check the timing. Penalties are driven by the remaining term, so a break late in the term is usually cheaper than one early on.
- If you are refinancing, gather the new lender's full cost picture and compare total cost rather than rate alone.
- If you are switching lenders, confirm the discharge timeline with both sides in writing so you do not pay interest on two mortgages at once.
If you disagree with the penalty, or you cannot pay it
Start with your lender's internal complaint process and ask for the calculation in writing. Federally regulated financial institutions' consumer complaints go to the Financial Consumer Agency of Canada if the lender does not resolve the issue, while provinces license and supervise most other lenders, so the escalation path depends on who you borrowed from.
If the problem is broader than a penalty, the options are different in kind. Only a licensed insolvency trustee can administer a consumer proposal or bankruptcy in Canada. A consumer proposal stays on a credit report for 3 years after completion, or 6 years from filing, whichever comes first, and a first bankruptcy stays on a credit report for 6 years after discharge. Canada has two national credit reporting bureaus, Equifax Canada and TransUnion Canada, and both will hold that information. Those are real consequences worth understanding before choosing a route, and the right answer depends on your individual circumstances, so for a decision of that size you should speak with a licensed insolvency trustee or another regulated professional.
What this means for comparing mortgages
Because penalties and privileges are set contract by contract, the headline rate is only part of what a mortgage costs. A mortgage with generous prepayment privileges and a predictable penalty method can cost less over its life than a cheaper rate with tight restrictions, particularly if your circumstances are likely to change. The lowest rates are only available to the most qualified applicants.
loanmoose.ca is not a lender. It does not make loans, set rates, or make credit decisions. It is a matching and comparison service that connects Canadians with licensed lenders, and any rate, term or approval decision comes from the lender and depends on that lender's own underwriting, your credit profile and the documents you provide. Lending in Canada is licensed provincially, so the regulator and the rules differ depending on where you live.