Breaking Your Mortgage Early in Canada: Penalties and When It's Worth It

Why Borrowers Break a Mortgage Early

People break a mortgage before term end for a mix of reasons: selling to move, refinancing to pull out equity, switching lenders for a materially better rate, or restructuring debt after a change in income. Whatever the reason, breaking early almost always triggers a prepayment penalty, and the size of that penalty depends heavily on whether your mortgage is fixed or variable.

Understanding the penalty calculation before you commit to breaking a term, rather than after your lender sends the payout statement, is the difference between a decision that clearly pays off and one that quietly erases most of the benefit you were chasing.

Breaking a Variable-Rate Mortgage

Variable-rate mortgages in Canada are usually the cheaper product to break. The standard penalty is three months' interest, calculated on your current balance at your contract rate. This is a relatively small, predictable number compared to what fixed-rate borrowers can face, which is part of why variable mortgages are often described as more flexible, not just in rate exposure but in exit cost.

Breaking a Fixed-Rate Mortgage: The IRD Trap

Fixed-rate mortgages use the greater of three months' interest or an Interest Rate Differential (IRD) calculation. The IRD roughly estimates the interest the lender would lose by letting you exit early when current rates are lower than your contract rate, since they can no longer earn your original rate for the remaining term. When rates have fallen since you signed your fixed term, the IRD can run into the thousands or even tens of thousands of dollars, particularly on larger balances with several years left on the term.

This is the single most common surprise for Canadian fixed-rate borrowers who assume breaking a mortgage costs a flat, small fee. It doesn't. Always ask your lender for the exact payout figure in writing before you commit to a refinance or sale that depends on breaking your current term.

When Breaking Early Actually Pays Off

The math is straightforward in principle: compare the penalty cost against the total savings from the new rate over your remaining timeline, including any cashback, fees, or legal costs on the new mortgage. If the new rate is only marginally better, or if you plan to move again soon anyway, the penalty frequently outweighs the benefit.

Breaking early tends to make the most sense when a large rate gap has opened up, when you have many years left on a high-rate fixed term, or when a refinance unlocks equity you genuinely need for a specific purpose, such as consolidating higher-interest debt. It tends to make the least sense when you're chasing a marginally better headline rate a year or two before your term naturally ends anyway.

Model the Numbers Before You Decide

Use our free Canada mortgage calculator to compare your current payment against a hypothetical new rate, then weigh the monthly savings against the penalty quote from your lender before committing to a break.

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