Variable rate mortgages save Canadian borrowers money more often than not — but they require understanding the mechanics, the risks, and which lender offers the best terms. Here is everything you need to compare.
How variable rates are priced
Every variable rate mortgage in Canada is priced as a discount from the lender’s prime rate:
| Component | What It Means |
|---|---|
| Bank of Canada overnight rate | The rate set by the BoC (currently 2.25%) |
| Lender prime rate | Typically overnight rate + 2.20% (currently 4.45%) |
| Your discount | Negotiated with your lender (e.g., prime – 0.70%) |
| Your actual rate | Prime minus your discount (e.g., 4.45% – 0.70% = 3.75%) |
For reference, the official Bank of Canada rate:
| Metric | Value |
|---|---|
| Current target overnight rate | 2.25% (effective October 30, 2025) |
| Bank Rate | 2.5% (effective October 30, 2025) |
| Cycle peak (since 2009) | 5% (reached July 13, 2023) |
| Next scheduled announcement | October 28, 2026 |
Source: Bank of Canada Valet API, series V39079 (target rate) and BR.CDN (Bank Rate), fetched 2026-09-03, as of September 2, 2026.
When the Bank of Canada changes its rate: If the BoC cuts by 0.25%, prime drops by 0.25%, and your rate drops by 0.25%. Your discount stays the same for the entire 5-year term.
Adjustable payment vs static payment variable
This is the most important distinction in variable rate mortgages — and most borrowers do not know the difference:
| Feature | Adjustable Payment (ARM) | Static Payment Variable |
|---|---|---|
| When rates change | Your payment changes immediately | Your payment stays the same |
| Interest/principal split | Always correctly allocated | Shifts — more goes to interest when rates rise |
| Trigger rate risk | None — payment always covers interest | Yes — if rates rise enough, payment does not cover interest |
| Amortization impact | Stays on track (25 years) | Can extend beyond 25 years if rates rise |
| Who offers this | First National, MCAP, RMG, most monolines | TD, RBC, BMO, most Big Five banks |
| Better for | Borrowers who want transparency and no trigger risk | Borrowers who want payment stability with variable pricing |
Recommendation: Adjustable payment mortgages are generally preferred because they avoid the trigger rate problem entirely and keep your amortization on track. The payment fluctuation from a 0.25% rate change is typically $50–$65 per month on a $400,000 mortgage — manageable for most budgets.
Best variable rate discounts by lender
| Lender | Typical Prime Discount | Resulting Rate (at Prime 4.45%) | Payment on $400K/25yr | Type |
|---|---|---|---|---|
| Nesto | Prime – 0.90% to –1.00% | 3.45–3.55% | $1,992–$2,013 | Adjustable |
| First National | Prime – 0.75% to –0.90% | 3.55–3.70% | $2,013–$2,046 | Adjustable |
| MCAP | Prime – 0.70% to –0.85% | 3.60–3.75% | $2,024–$2,057 | Adjustable |
| RMG | Prime – 0.65% to –0.80% | 3.65–3.80% | $2,035–$2,067 | Adjustable |
| TD | Prime – 0.50% to –0.70% | 3.75–3.95% | $2,057–$2,100 | Static payment |
| RBC | Prime – 0.45% to –0.65% | 3.80–4.00% | $2,067–$2,111 | Static payment |
| BMO | Prime – 0.45% to –0.65% | 3.80–4.00% | $2,067–$2,111 | Static payment |
| Scotia | Prime – 0.40% to –0.60% | 3.85–4.05% | $2,078–$2,122 | Static payment |
| CIBC | Prime – 0.40% to –0.60% | 3.85–4.05% | $2,078–$2,122 | Static payment |
Discount widths are typical/illustrative ranges, not live quotes, and change frequently based on lender competition and bond market conditions. Payments are calculated at a 4.45% prime rate (Bank of Canada overnight rate of 2.25% + a typical 2.20% lender spread) as of September 2, 2026. Rates vary by lender and applicant — verify current offers directly with a lender or mortgage broker.
What a larger prime discount saves you
The difference between prime – 0.50% and prime – 0.90% may seem small, but over 5 years:
| Metric | Prime – 0.50% (3.95%) | Prime – 0.90% (3.55%) | Savings |
|---|---|---|---|
| Monthly payment ($400K) | $2,100 | $2,013 | $87/month |
| 5-year interest cost | $74,100 | $66,400 | $7,700 |
| 5-year principal paid | $51,900 | $54,400 | $2,500 more equity |
That 0.40% discount difference saves roughly $10,200 in total over 5 years (interest savings plus extra principal paid), illustrated at a 4.45% prime rate as of September 2, 2026.
Trigger rate explained
Trigger rates only affect static payment variable mortgages (TD, RBC, BMO, Scotia, CIBC). Here is how they work:
Your trigger rate is the rate at which your fixed payment no longer covers the interest.
| Example | Numbers |
|---|---|
| Original mortgage | $400,000 at prime – 0.60% (3.85%) |
| Monthly payment set at | $2,078 |
| Monthly interest at 3.85% | $1,283 |
| Monthly principal | $795 |
| If rates rise to 6.24% | Monthly interest = $2,080 (nearly equals your payment) |
| Trigger rate | ~6.24% — at this point all your payment goes to interest, nothing to principal |
| Above trigger rate | Payment does not cover interest — deferred interest is added to your balance (negative amortization) |
Illustrative example based on a 4.45% prime rate as of September 2, 2026. Your actual trigger rate depends on your contract rate, balance, and payment.
What happens when you hit your trigger rate:
- Your lender contacts you
- You must increase your payment to cover interest + principal, or
- Make a lump sum payment to reduce the balance, or
- Convert to a fixed rate (at the lender’s current fixed rate — not your original rate)
How to avoid trigger rate risk: Choose an adjustable payment variable mortgage (First National, MCAP, Nesto, RMG) where your payment adjusts automatically.
Variable rate penalty advantage
One of the biggest advantages of variable rate mortgages is the breakage penalty:
| Mortgage Type | Penalty if Broken | Example: $350K Remaining Balance |
|---|---|---|
| Variable rate (any lender) | 3-month interest | $3,000–$3,550 |
| Fixed rate (monoline) | Higher of 3-month interest or fair IRD | $3,000–$8,000 |
| Fixed rate (Big Five bank) | Higher of 3-month interest or posted-rate IRD | $12,000–$25,000 |
Variable rate mortgages always use the simple 3-month interest penalty — never the IRD calculation. This means if you break your mortgage early (sell, refinance, or switch), the penalty is predictable and reasonable.
Real-world scenario: You take a 5-year variable and want to refinance in year 3.
- Variable penalty: 3 months × ($350,000 × 3.85% ÷ 12) = $3,369
- Bank fixed penalty: IRD could be $15,000–$20,000 depending on rate movement
The variable penalty is roughly $12,000–$17,000 lower. That is often more than enough to offset any rate difference.
Historical performance: variable vs fixed
Over the past 30+ years, borrowers who chose variable rate mortgages paid less total interest than those who chose fixed rates approximately 80% of the time (based on completed 5-year terms).
| Period | Variable Rate Performance |
|---|---|
| Falling rate environment | Variable wins clearly — your rate drops with each BoC cut |
| Stable rate environment | Variable usually wins — starting rate is typically lower than fixed |
| Rising rate environment | Variable may lose — but penalty savings can offset the rate difference |
| Extreme rate spike | Variable loses — but this is rare and short-lived historically |
Why variable wins so often: The fixed rate already has rate increases “priced in.” When you choose a fixed rate, you are paying an insurance premium for certainty. Most of the time, the feared rate increases do not fully materialize, and variable borrowers pay less.
When to choose variable in 2026
| Scenario | Variable Likely Better | Fixed Likely Better |
|---|---|---|
| BoC is cutting rates | ✅ | |
| BoC is holding rates | ✅ (starting rate is lower) | |
| BoC is raising rates aggressively | ✅ | |
| You might sell/refinance before 5 years | ✅ (lower penalty) | |
| You cannot tolerate any payment uncertainty | ✅ | |
| You are stretching your budget to qualify | ✅ (predictable payments) | |
| You have financial cushion for payment changes | ✅ | |
| Variable-fixed spread is large (0.50%+) | ✅ | |
| Variable-fixed spread is small (< 0.20%) | ✅ (low cost for certainty) |
How to protect yourself with a variable rate
If you choose variable, these strategies limit your downside risk:
1. Budget for higher payments
Set your budget as if you had a fixed rate. If your variable payment is $2,332 and the equivalent fixed would be $2,421, budget $2,421 and put the $89 difference toward your mortgage as extra principal.
2. Use prepayment privileges aggressively
With adjustable payment variable mortgages, every rate decrease lowers your payment. Keep paying the same amount — the extra goes to principal, shortening your amortization.
3. Have a conversion plan
Most variable rate mortgages allow you to convert to fixed at any time with no penalty. If rates spike dramatically, you can lock in at the lender’s current fixed rate. The conversion rate will not be as good as what you could have gotten originally, but it stops the bleeding.
4. Set a personal rate ceiling
Decide in advance: “If my rate exceeds X%, I will convert to fixed.” This removes emotion from the decision and gives you a clear action plan.
Lender feature comparison for variable rates
| Feature | First National | MCAP | Nesto | TD | RBC |
|---|---|---|---|---|---|
| Payment type | Adjustable | Adjustable | Adjustable | Static | Static |
| Prime discount | –0.75 to –0.90% | –0.70 to –0.85% | –0.90 to –1.00% | –0.50 to –0.70% | –0.45 to –0.65% |
| Trigger rate risk | None | None | None | Yes | Yes |
| Conversion to fixed | Yes, no penalty | Yes, no penalty | Yes, no penalty | Yes, no penalty | Yes, no penalty |
| Prepayment | 15/15 | 20/20 | 15–20 | 15/double | 10/10 |
| Breakage penalty | 3-month interest | 3-month interest | 3-month interest | 3-month interest | 3-month interest |
| Portability | Yes | Yes | Yes | Yes | Yes |