The 5-Year Rule That Caps Your Mortgage Penalty

Here is the operative wording of subsection 10(1), from the Justice Laws Website. It is one sentence, and it repays reading slowly:

“Whenever any principal money or interest secured by mortgage on real property or hypothec on immovables is not, under the terms of the mortgage or hypothec, payable until a time more than five years after the date of the mortgage or hypothec, then, if at any time after the expiration of the five years, any person liable to pay, or entitled to pay in order to redeem the mortgage … tenders or pays, to the person entitled to receive the money, the amount due for principal money and interest to the time of payment … together with three months further interest in lieu of notice, no further interest shall be chargeable, payable or recoverable at any time after the payment on the principal money or interest due under the mortgage or hypothec.”

Four conditions have to line up, and each one matters. The term must be longer than five years. Five years must have actually passed. You must tender — not request, not argue, but genuinely offer — principal plus interest to that day plus three months further interest. And you must not be one of the excluded borrowers below.

When all four are met, the closing clause does the work. Any further interest, including the interest rate differential your lender would otherwise charge, is not chargeable, not payable, and not recoverable.

There is a reason no broker, including me, can give you a dollar figure at signing, and it is not evasiveness. An interest rate differential is calculated against where rates sit on the day you break. Nobody knows where they will sit. The penalty is not a number that exists and is being withheld from you — it is a number that has not been determined, and will not be until the day you ask to leave.

Sit with that, because it changes what you are actually agreeing to. When you sign a long fixed term you are not accepting a known exit cost. You are accepting an unknown one, bounded only by whatever your contract permits — which is precisely why a statutory ceiling on that unknown is worth more than it first appears.

In my experience the range runs from roughly one percent of the balance on the low side to about five percent on the high side. That is not a published statistic and I would not present it as one; it is what two decades of payout statements look like. But the spread is the point. A five-fold difference in the cost of leaving, decided by conditions that do not exist yet. If you are trying to work out whether breaking pays at all, the arithmetic is in our guide to mortgage rate timing.

The statute says “the date of the mortgage,” and that phrase has been litigated all the way to the Supreme Court of Canada. The leading authority is Royal Trust Co. v. Potash, decided in 1986, and it produced a rule that depends entirely on how your renewal paperwork was drafted.

Where a mortgage is renewed by an agreement that deems the date of the mortgage to be the date of that renewal, the clock restarts. The Court held this is not illegal contracting out: the borrower had the right, the right arose, and the borrower consciously chose not to exercise it. Where instead the term is simply extended and the original date of the mortgage is left untouched, courts add the original term and the extension terms together. Under that path, a 3-year term extended by another 3 years puts you past five years from the original date.

In practice, standard Canadian bank renewal agreements redate. That is why this article is really about the 7-year and 10-year products, where the term itself is longer than five years from the outset and no drafting question arises. If you think you are in the extension scenario, that is a conversation for a real estate lawyer holding your actual documents, not for a calculator.

It is tempting to point at section 10 and stop there, and that would be too neat. The American 30-year fixed is prepayable without penalty and exists anyway, because the securitization machinery behind Fannie Mae and Freddie Mac absorbs the prepayment option. So a statutory prepayment right on its own does not kill a long fixed term.

The funding side matters more. Bank of Canada Senior Deputy Governor Carolyn Rogers addressed this directly in a November 2024 speech: “Canadian fixed-rate mortgages are generally benchmarked off 5-year government bond yields, whereas the US benchmark is the 10-year Treasury.” On the lender side, she was equally blunt: “You can see why lenders prefer to keep mortgage terms under five years. They are not precluded from offering longer terms, and indeed some do. But since they hold more interest rate risk, they generally charge a higher interest rate.”

So the honest answer is that section 10 is one input among several — the benchmark tenor, the absence of a Fannie or Freddie style secondary market, and lender appetite for interest rate risk all pull the same direction. Section 10 sharpens it, because past year five the lender can no longer fully recover lost interest through an IRD.

It changes the shape of the risk, and it is worth being precise about how. The usual argument against a 10-year fixed is that you pay a premium for a rate you might be stuck with for a decade if rates fall. Section 10 cuts that decade roughly in half. From month 61 onward, your exit cost is capped at three months of interest, which is the same ceiling a variable-rate borrower lives with.

What it does not do is help you in years one through five, which is exactly when a long fixed is most exposed to a sharp drop in rates. So the real question becomes narrower and more answerable: are you comfortable being locked in for five years at this rate, knowing that after that the door opens for three months of interest? That is a genuinely different question from “am I comfortable for ten years,” and it is the one to actually ask.

That is the analysis. Here is where I land, and I want to be clear it is a position rather than a conclusion the numbers force on anyone. When rates bottomed out during COVID, ten-year money was available at roughly a point above the five-year rate and almost nobody took it. The people who did are sitting on years of a rate that cannot be bought anymore, no renewal pushing them up, and — now that they are past month 61 — an exit capped at three months of interest. They paid a point for five years of certainty and got the back half of the decade close to free.

If you are weighing that decision, the mechanics of how your penalty gets calculated in those first five years matter enormously. Our guide to how the IRD penalty is actually calculated walks through the posted-rate formula the Big 5 use, which produces a far larger number than the contract-rate formula most monoline lenders use. And because Canadian mortgages compound semi-annually rather than monthly, the interest figure you tender is not the one a US-style calculator will give you.