The fixed-versus-variable conversation often starts with a prediction: 'Where are rates going next?' That's a hard question, and your mortgage still has to work if the prediction is wrong. At refinance time, there's another question too: what are you changing about your loan, and how long are you likely to keep the new one?
Two households can see the same offers and reasonably choose different terms. The right comparison includes cash-flow room, plans for the property, penalty rules and the kind of uncertainty you can live with. It doesn't require pretending anyone knows the next Bank of Canada announcement.
What you're buying with a fixed rate
A fixed rate gives you a known rate for the term. Your scheduled principal-and-interest payment is generally predictable during that term, assuming the mortgage terms don't otherwise change. For a household planning around childcare, a renovation or uneven income, that certainty has a real value. It may be worth paying a little more for it, even if a variable quote starts lower.
But fixed doesn't mean the mortgage is flexible in every respect. If you break a closed fixed term early, many lenders charge the greater of three months' interest and an interest rate differential, or IRD. The IRD calculation depends on the lender and contract. If market rates fall and you want to leave, the charge may be substantial. So a fixed term is a commitment not only to a rate but, potentially, to a more expensive exit. Read the penalty language before choosing a term length.
What variable actually means for your payment
A variable rate usually moves with a lender's prime rate, expressed as prime plus or minus a spread in your contract. That spread matters: 'prime minus 0.75%' and 'prime minus 0.25%' aren't the same offer, even if they move on the same day. Prime rates often respond to changes in the Bank of Canada's policy rate, but the lender sets its own prime rate. Variable isn't a single standardized product.
Some variable mortgages have adjustable payments: when rates rise, the required payment rises; when rates fall, it may drop. Others hold the scheduled payment steady for a time, changing how much of each payment goes to interest instead of principal. With sufficiently high rates, that fixed payment may stop reducing the balance; the lender may then require an adjustment under the contract. Ask which kind you are being offered and what happens if prime rises by one or two percentage points. A 'fixed payment' on a variable mortgage isn't the same thing as a fixed interest rate.
Many closed variable mortgages have a prepayment charge of about three months' interest rather than an IRD. That's attractive if you may move or refinance again, but 'usually' is doing important work there. Confirm the exact terms, any conversion option and whether converting to fixed means taking the lender's offered rate at that time, not today's rate.
The rate environment matters, but not as a forecast contest
Fixed-rate pricing and variable-rate pricing react to different markets. A fixed quote reflects lenders' funding costs and expectations over the term, while variable pricing is tied more directly to prime. You can see a fixed offer below a variable offer, or the reverse. Neither arrangement proves where rates will go from here; some expectations are already reflected in today's quotes.
Instead of betting on a particular path, try a few. If a variable offer starts at 5% on a $500,000 balance and rises to 6%, the first month's interest difference is roughly $417 ($500,000 × 1% ÷ 12). That's not the exact change in a mortgage payment: payments also repay principal, balances decline, and calculation conventions differ. But it gives a scale for stress-testing your budget. Could you absorb that change without putting other bills on credit? Would a falling rate matter enough to compensate you for the risk of a rising one?
Then compare actual lender illustrations using the same loan amount, amortization and term. Include any fees and incentives. A tiny initial rate difference can matter less than a penalty clause if you know you'll likely sell in two years. Conversely, if you're comfortable keeping the loan through the full term and need a stable payment, the apparent premium for fixed may be money well spent.
Your timeline is as important as your temperament
Think about the next few years in concrete terms. Is a move realistic? Will you need more equity for renovations? Might you switch jobs, change income structure, or receive a lump sum you want to put against the mortgage? A short expected holding period makes the cost of leaving early more important. Ask about portability, prepayment privileges, lump-sum limits and whether the mortgage is registered in a way that complicates switching lenders.
If your income varies month to month, don't mistake willingness to take risk for capacity to take it. You might be comfortable with rate uncertainty in principle but still need a payment ceiling in practice. On the other hand, if you have a strong cash buffer and can make extra principal payments when rates are low, variable-rate uncertainty may be manageable. Neither choice says anything about whether you're financially sophisticated. It's about fitting the contract to the household.
Refinancing adds one more comparison
At renewal, you can generally shop for a new term without the early-break charge, though switching costs and qualification still matter. Refinancing mid-term is different. The current mortgage's penalty and the replacement mortgage's features both belong in the calculation. A lower new rate can look appealing until the old IRD and fees are included. If you're accessing equity, compare the amount borrowed and total interest, not only the headline rate.
It's also worth checking whether you actually need to replace the first mortgage. If its rate is favourable, a HELOC or a second mortgage might preserve it, though neither is free money and the combined cost can be higher. See the refinance, HELOC and second-mortgage comparison, or use the payment calculator to test your numbers. The calculator is an estimate, not a lender quote.
Make the choice with offers, not labels
Request comparable fixed and variable quotes in writing. Check the rate, term, amortization, prepayment privileges, early-exit charge, conversion terms and whether payments adjust when rates move. If one offer is cheaper now, ask what must happen for that advantage to disappear. If one is more predictable, ask what that predictability costs and what happens if you leave early.
Meshesha Robel, Mortgage Agent Level 2 with Mortgage Alliance, can compare those details with you without assuming fixed or variable is automatically better. Call or text (647) 342-1355, or email mrobel@mesheshagroup.com. Bring your current mortgage statement and a rough idea of how long you expect to stay; that's enough to start a useful conversation.
Examples are illustrative only. Rates, qualification and penalty amounts depend on your lender and mortgage agreement. Confirm your exact payout with your current lender.