Fixed vs. Variable Mortgage Rates: Which Is Right for You?

Reviewed by the SuperLoan.ca Editorial Team · Updated 2026-09-05

Compare fixed vs variable mortgage rates in Canada. Learn how interest rate type, term, and amortization affect your payment. General guidance inside.

Choosing between a fixed and a variable mortgage rate is one of the most important decisions you will make when financing a home. A fixed mortgage locks in an interest rate for the entire term, while a variable mortgage fluctuates with the lender’s prime rate. This guide explains how each type works, what factors affect your monthly payment, and how to think about risk in the Canadian housing market. The following information is general educational content and does not constitute financial advice.

What Is a Fixed-Rate Mortgage?

With a fixed-rate mortgage, the interest rate you agree to at closing stays the same for the full term—typically 1 to 5 years in Canada, though longer terms are available. Your monthly payment (principal and interest) remains constant throughout the term, regardless of changes in the Bank of Canada’s overnight rate or the lender’s prime rate. This predictability makes budgeting easier, but you may pay a premium for that stability compared to the initial rate on a variable mortgage. At renewal, you can negotiate a new fixed rate or switch to a variable product. If you need to break the mortgage early, you may face a significant penalty equal to the interest rate differential.

What Is a Variable-Rate Mortgage?

A variable-rate mortgage ties your interest rate to the lender’s prime rate. When the prime rate rises, your payment (if you have a variable payment) or the portion going to principal (if you have a fixed payment) adjusts upward. Canadian variable mortgages often come in two flavours: adjustable-rate (your payment changes when the prime rate changes) and variable-rate with fixed payments (your payment stays the same but more goes to interest if rates rise, and less to principal). Because rate changes can happen at any time, your monthly costs are less predictable. However, variable rates historically start lower than fixed rates, and you may benefit if rates stay flat or decline. The stress test for a variable mortgage usually uses a qualifying rate that is higher than the contract rate, so ensure you can afford potential increases.

Key Factors to Compare

When deciding between fixed and variable, consider these elements:

Interest rate direction: Fixed rates offer certainty; variable rates expose you to market movements. No one can reliably predict future rates, so base your choice on your personal risk tolerance.
Term length: Shorter terms (1–3 years) are common for variable mortgages. Longer fixed terms (5 years) provide stability but may carry higher penalties if broken early.
Amortization period: The total time to pay off the mortgage (e.g., 25 years) affects how much interest you pay over the life of the loan. A variable rate can save interest if rates stay low, but a fixed rate protects against payment shock.
Credit score and down payment: Your credit score (monitored by Equifax and TransUnion Canada) and the size of your down payment influence the rates lenders offer. A larger down payment (20% or more) avoids default insurance costs.
Prepayment privileges: Most Canadian mortgages allow you to make extra payments or increase your payment amount up to a limit (e.g., 15–20% of the original principal annually). Fixed-rate mortgages may have stricter rules on lump-sum prepayments.

Fixed vs. Variable at a Glance

Feature	Fixed-Rate Mortgage	Variable-Rate Mortgage
Rate stability	Rate locked for the term	Rate changes with prime
Monthly payment	Constant (P&I same each month)	May vary; could go up or down
Typical penalty	Interest rate differential (IRD) may be high	Usually 3 months’ interest
Best for	Homeowners who want certainty and plan to hold the mortgage for the full term	Borrowers who can handle payment fluctuations and want lower initial costs
Refinance flexibility	Can refinance, but penalties may apply	Often easier to break with lower penalty

How to Choose in the Canadian Context

In Canada, most mortgages are offered by federally regulated lenders (banks, credit unions, and mortgage finance companies). Provincial regulations vary, but all lenders must follow the national mortgage stress test rules. Your personal financial situation—income stability, savings, debt levels, and future plans—matters more than a guess about where rates are headed. If you value peace of mind and can afford the slightly higher fixed rate, a fixed mortgage may be your best option. If you are comfortable with some risk and want to take advantage of potential lower rates, a variable mortgage could be suitable. Always review the terms of any mortgage product carefully, and consider speaking with a licensed mortgage professional in your province.

No matter which path you choose, remember that your mortgage is a long-term commitment. Regularly review your credit report through Equifax or TransUnion Canada, and keep your down payment and debt-to-income ratio under control. This guide is for general informational purposes only—your individual circumstances may require a different approach.

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Frequently Asked Questions

Can I switch from a fixed mortgage to a variable mortgage before the term ends?

Yes, but you will likely pay a prepayment penalty equal to the interest rate differential or three months’ interest, whichever is higher. Some lenders allow a blend-and-extend option, but that is not a full switch. Review your mortgage contract or ask your lender about the specific penalty before making a change.

What happens to my variable mortgage payment if the prime rate increases?

It depends on the type of variable mortgage. With an adjustable-rate mortgage, your payment increases immediately when the prime rate rises. With a fixed-payment variable mortgage, your payment amount stays the same, but a larger portion goes toward interest and less toward principal. If rates rise enough, you may reach a point where your payment no longer covers the interest, triggering a payment increase or a negative amortization warning.

How does the mortgage stress test affect fixed vs. variable rates in Canada?

The stress test requires all borrowers to qualify at a rate that is the greater of the contract rate plus 2% or the lender’s current qualifying rate (often around 5.25% for uninsured mortgages). For a variable mortgage, the qualifying rate is typically higher than the offered rate, which can make it harder to qualify. Fixed-rate borrowers also face the stress test, but the gap between the contract rate and the qualifying rate may be smaller. Your ability to pass the stress test depends on your income, down payment, and debt levels.

Reviewed by the SuperLoan.ca Editorial Team

Our editorial team researches and fact-checks content to keep guides accurate and up to date. This guide provides general educational information about loans and does not constitute financial advice.