How a fixed-rate mortgage works
A fixed mortgage rate stays the same for the agreed term. It provides predictable interest and usually predictable payments, which can make budgeting easier. The trade-off is that fixed mortgages may have different penalty calculations and may cost more to break than expected.
How a variable-rate mortgage works
A variable mortgage rate can change when the lender’s prime rate changes. Depending on the product, the payment may change with the rate or the payment may stay fixed while the share going to interest changes. With a fixed-payment variable mortgage, rising rates can reduce principal repayment and may eventually require action.
Questions that matter more than a rate forecast
- Could your budget handle a higher payment?
- How long do you expect to keep the property and mortgage?
- Might you sell, refinance or move before the term ends?
- How does the lender calculate a prepayment penalty?
- Can the variable mortgage be converted to fixed, and on what terms?
- Do prepayment privileges match your payoff plans?
Compare the full mortgage contract
Rate type is only one feature. Compare the term, amortization, payment frequency, portability, prepayment privileges, conversion options, restrictions and penalty method. A lower starting rate can be a poor fit if the contract limits a move or refinance you are likely to need.
A practical decision test
Choose the option you can keep through realistic rate and life changes. Run the payment at today’s rate and at higher-rate scenarios. Then compare the cost and flexibility if you sell, refinance or make extra payments before the term ends.
Frequently asked questions
Is a fixed or variable mortgage better in Ontario?
Neither is universally better. A fixed rate prioritizes predictability, while a variable rate accepts rate movement in exchange for different pricing and flexibility. The right choice depends on your budget, risk tolerance and plans.
Can the payment on a variable mortgage stay the same?
Some variable mortgages have fixed payments, while others have adjustable payments. With a fixed payment, rate increases may direct more of the payment to interest and less to principal.
Can I convert a variable mortgage to a fixed rate?
Many lenders offer a conversion option, but the available fixed rate and remaining-term choices depend on the contract and lender. Review the conversion clause before choosing the mortgage.
Which mortgage usually has the lower penalty?
Penalty calculations vary by lender and contract. Variable closed mortgages often use a set number of months’ interest, while fixed closed mortgages may use the greater of that amount or an interest-rate differential.
Reviewed by Sunny Nayyar, Mortgage Agent Level 2FSRA #M23007062Tango Ontario Brokerage #13691Serving OntarioUpdated September 18, 2026
