Variable Rate Mortgages: Fixed Payment vs Adjustable Payments
Fixed Payments vs. Adjustable Payments — Which Is Better in Today’s Market?
Two mortgages. The same interest rate. Two very different ways of managing your payments.
When choosing a variable-rate mortgage in Canada, most homeowners focus on securing the lowest possible interest rate.
But there’s another important consideration that often gets overlooked: How will your mortgage payments behave when interest rates change?
There are two main types of variable-rate mortgages in Canada:
- Variable-Rate Mortgage (VRM) — Your interest rate fluctuates, but your regular payment generally stays the same.
- Adjustable-Rate Mortgage (ARM) — Your interest rate and regular payment both fluctuate.
Both can be excellent options, but depending on the economic environment and your financial goals, one may be more attractive than the other.
Let’s look at the differences using today’s mortgage rates.
Today’s Example: Same Rate discount, Different Mortgage Structures
As of October 26, 2026, the major Canadian banks’ benchmark prime rate is 4.45%.
For illustration, let’s assume you’re considering two five-year variable-rate mortgages, both offering the exact same discount to prime.
| Mortgage Details | Fixed-Payment Variable | Adjustable-Payment Variable |
|---|---|---|
| Mortgage amount | $600,000 | $600,000 |
| Amortization | 25 years | 25 years |
| Term | 5 years | 5 years |
| Prime rate | 4.45% | 4.45% |
| Discount | Prime − 0.80% | Prime − 0.80% |
| Today’s interest rate | 3.65% | 3.65% |
| Starting monthly payment | ~$3,043 | ~$3,043 |
Both mortgages start with exactly the same interest rate and monthly payment.
The difference becomes apparent when interest rates change.
Option 1: Variable Rate with Fixed Payments
With a fixed-payment variable-rate mortgage, your regular payment generally remains unchanged when interest rates rise or fall.
What changes is how much of your payment goes toward interest versus paying down your mortgage principal.
When interest rates fall:
- Your payment remains approximately $3,043.
- Less money goes toward interest.
- More money goes toward reducing your mortgage balance.
- You could pay off your mortgage faster.
When interest rates rise:
- Your payment generally remains approximately $3,043.
- More money goes toward interest.
- Less money goes toward your principal.
- Your amortization may become longer.
Why This Can Be Attractive in Today’s Volatile Market
We are currently experiencing considerable economic uncertainty.
Inflationary pressures from international tariffs, global trade disruptions and the ongoing conflict in the Middle East have complicated the outlook for interest rates.
Higher energy prices can push headline inflation higher, while economic weakness and slower growth may discourage the Bank of Canada from raising rates.
This creates an environment where the future direction of interest rates is less predictable.
A fixed-payment variable mortgage can be particularly attractive during periods of uncertainty because it provides greater payment stability without requiring you to lock into a fixed interest rate.
You retain exposure to potential interest-rate reductions while limiting the immediate impact of rate increases on your monthly cash flow.
The Potential Drawback
If rates rise substantially, your mortgage may take longer to pay off.
In extreme circumstances, you could reach your mortgage’s trigger rate, where your payment no longer covers all the interest owing.
Depending on the lender, this could eventually require a payment increase, lump-sum payment or other adjustment.
Examples of lenders: TD, BMO and RBC offer fixed-payment variable-rate mortgage structures, subject to their current product terms.
Option 2: Adjustable-Rate Mortgage
With an adjustable-rate mortgage, your monthly payment changes whenever your lender adjusts its prime rate.
If interest rates decline, your required mortgage payment decreases.
If interest rates increase, your required mortgage payment increases.
The benefit is that your payments generally remain aligned with your original amortization schedule.
Why This Can Be Attractive in a Declining Rate Environment
When interest rates are falling, adjustable-rate mortgages can be particularly appealing because homeowners experience immediate monthly cash-flow savings.
Rather than keeping your payment unchanged and allocating additional money toward principal, your lender automatically reduces your required payment.
That means more money available each month for savings, investments, household expenses or other financial priorities.
The Potential Drawback
If interest rates rise, your mortgage payment increases.
For homeowners managing a tight monthly budget, this can create additional financial pressure.
Examples of lenders: Scotiabank, National Bank and all non bank lenders offer adjustable-payment variable mortgage products, depending on the specific product and lender terms.
What Happens If Interest Rates Change by 0.50%?
Let’s return to our $600,000 mortgage, starting at 3.65%.
The following examples illustrate what could happen if prime rates increase or decrease by 0.50%.
| Scenario | Fixed-Payment Variable | Adjustable-Payment Variable |
|---|---|---|
| Rates fall to 3.15% | ~$3,043 | ~$2,882 |
| Rates remain at 3.65% | ~$3,043 | ~$3,043 |
| Rates rise to 4.15% | ~$3,043 | ~$3,208 |
Illustrative payments based on a $600,000 mortgage, 25-year amortization and Canadian semi-annual compounding. Adjustable payments are recalculated using the original balance and amortization for comparison. Actual lender payments depend on the outstanding balance, remaining amortization, compounding and timing of rate changes.
What Does This Mean for You?
If rates fall by 0.50%, the adjustable-rate borrower could see approximately $161 in monthly cash-flow savings, or roughly $1,930 annually if the lower payment persisted for 12 months.
Meanwhile, the fixed-payment variable borrower continues paying the same amount, directing more money toward principal.
If rates rise by 0.50%, the adjustable-rate borrower could see their monthly payment increase by approximately $165.
The fixed-payment variable borrower generally continues making the same payment, but less goes toward principal.
Neither borrower is protected from changes in interest costs. The difference is how those costs affect their monthly payments and mortgage repayment.
Which Mortgage Makes More Sense in 2026?
The current economic environment presents an interesting situation.
Canadian households continue to face economic uncertainty, while tariffs, energy prices and geopolitical tensions are creating renewed inflation concerns.
At the same time, the Bank of Canada must balance those inflation risks against a relatively weak Canadian economy.
This makes predicting the direction of interest rates particularly challenging.
Here’s how we look at the two options:
In a declining interest-rate environment: An adjustable-rate mortgage can be especially attractive. As rates fall, homeowners enjoy immediate reductions in their monthly payments, improving cash flow.
In a volatile or uncertain interest-rate environment: A fixed-payment variable mortgage can offer an important advantage. Homeowners maintain a more predictable monthly payment while retaining the potential benefits of a variable interest rate.
For homeowners focused on paying down their mortgage faster: A fixed-payment variable mortgage can also be attractive when rates decline because the additional principal repayment happens automatically.
Of course, homeowners with adjustable-rate mortgages can often achieve similar results by voluntarily increasing their payments, subject to lender privileges.
The Bottom Line: It’s Not Just About the Interest Rate
At Mortgages.ca, we regularly remind clients that the lowest mortgage rate doesn’t necessarily mean the best mortgage.
Two lenders can offer identical interest rates but very different mortgage structures, prepayment privileges, penalties and flexibility.
And those differences can have a meaningful financial impact over the life of your mortgage.
With nearly two decades of mortgage experience, our approach is to understand your financial goals, explain the available options and recommend a mortgage strategy that makes sense for your circumstances.
Whether you’re purchasing a home, renewing your mortgage or considering switching lenders, we believe you deserve to understand exactly how your mortgage works.
Because choosing the right mortgage is about much more than just getting a great rate.
Want to see how a fixed-payment or adjustable-payment variable would work with your own mortgage?
Contact Mortgages.ca and we’ll walk you through your options, so the choice you make today still makes sense for years to come.