Variable vs fixed rate in 2026 — when the gamble makes sense and when it doesn't
Fixed vs variable at 7% rates: the spread, the break-even, and the scenarios where each wins. US ARMs and Canadian variable-rate mortgages compared with real payment numbers.
When rates are low, fixed mortgages are cheap and variable mortgages are cheaper — the spread is narrow and the risk of variable barely registers. At 7% rates, the question changes character: fixed is expensive, and variable offers a discount — but a discount on an already high rate that could go higher. Here is how to think through the decision with actual numbers.
The spread: what you pay for certainty right now
In Canada, the typical spread between a 5-year fixed and a 5-year variable (prime-based) has compressed significantly in 2025–2026. Prime rate has moved to price in expected Bank of Canada cuts, and fixed rates reflect similar expectations. The result: the certainty premium on a fixed mortgage is relatively modest — often 0.3–0.6 percentage points — compared to the 1.5–2.0 points typical in prior cycles.
In the US, the spread between a 30-year fixed and a 5/1 ARM has similarly compressed. At a 7.0% 30-year fixed rate, 5/1 ARM initial rates are often in the 6.0–6.3% range — a 0.7–1.0 point discount. That discount buys you certainty for 5 years, after which the rate floats.
US — 30-year fixed vs 5/1 ARM
Canada — 5-yr fixed vs variable
Illustrative rates for comparison. Actual rates vary by lender and borrower profile. Canadian payments use semi-annual compounding.
The break-even: how much rates have to rise to make fixed better
On the US example: the ARM saves $226/month for 5 years ($13,560 total). After year 5, the rate floats. For the fixed to win, the ARM rate would need to average at least 7.57% over the remaining 25 years to erase that savings — a sustained rise of 1.4 points above the initial ARM rate. That is the break-even threshold.
On the Canadian example: the variable saves $170/month. For the fixed to win, the variable rate would need to average 5.65%+ over the 5-year term — about 0.8 points above the current variable, sustained for the full term.
The core question for variable/ARM buyers
Will rates average more than X% above today's variable rate over my holding period?
If yes → fixed wins. If no → variable wins. If uncertain → fixed removes the question.
Who variable actually works for in 2026
Variable and ARM products make most sense for borrowers who satisfy at least two of these:
If you expect to sell or refinance before the ARM adjusts, you capture all the savings and face none of the rate risk. The 5-year fixed period on a 5/1 ARM is longer than most US buyers hold a loan before a life event triggers a move.
If central bank policy signals 200+ basis points of cuts over the next 2–3 years — as some forecasters expected in 2024 — variable holders capture that automatically. Fixed holders are locked out until refinancing, which has closing costs of $3,000–$6,000.
Variable works for borrowers who can absorb a $400–$600/month payment increase without financial stress. If that scenario would strain your budget, the risk profile of variable is too high regardless of rate direction.
If you are qualifying at the limit of the 28/36 rule, a rate increase that lifts your ARM payment 1–2% above the initial rate pushes you into financial stress. Fixed removes this scenario entirely and costs modestly more.
The ARM math assumes you refinance when rates drop to lock in gains. Borrowers who are unlikely to act on that opportunity lose the benefit of flexibility without capturing it as savings.
Canada: the unique variable-rate risk of payment-fixed mortgages
Many Canadian variable-rate mortgages are payment-fixed: the monthly payment does not change when the prime rate moves. Instead, the interest/principal split shifts. When rates rose sharply in 2022–2023, some variable mortgage holders found that their entire payment was going to interest — and their balance was not decreasing. This is called a trigger rate event, and several major banks reported significant numbers of variable-rate mortgages at or past their trigger rate.
With rates now moderating, many of those mortgages have recovered — but the episode is a reminder that Canadian variable-rate mortgages carry a specific risk that US ARMs do not: the payment can mask negative amortization until the lender intervenes. OSFI's B-20 guidelines address trigger rate management for federally regulated lenders.
Model both scenarios side by side
Enter your loan amount and compare the fixed rate vs a lower variable rate in the main calculator to see what each scenario costs over 5 and 10 years at your actual numbers.
Common questions
Can I switch from variable to fixed mid-term in Canada?
Most Canadian lenders allow conversion from variable to fixed at any time, but the fixed rate you receive is the lender's posted rate at the time of conversion — not a discounted rate. During rapid rate increases, lenders' posted fixed rates often exceed what new borrowers receive on negotiated discounts. Confirm the conversion rate before assuming it is advantageous. The FCAC explains your conversion rights under Canadian mortgage regulations.
What is an ARM cap structure in the US?
US adjustable-rate mortgages have a cap structure expressed as three numbers — for example, 5/1/5. The first number (5) is the initial cap: the maximum rate increase at the first adjustment. The second (1) is the periodic cap: the maximum change at each subsequent adjustment. The third (5) is the lifetime cap: the maximum total increase from the start rate. On a 7/6 ARM starting at 6.5% with a 5/1/5 cap, the worst case is 11.5% — which is the scenario you must be able to absorb before choosing adjustable. The CFPB explains ARM cap structures in detail.
Is a variable rate ever the right choice at high rates?
It depends on your time horizon and risk tolerance. If you have strong evidence that rates will fall meaningfully within your holding period — and you can absorb higher payments if they don't — a variable or ARM can save money. The risk is that rates stay elevated longer than expected. At current levels, the fixed-rate premium (the extra cost of certainty) is historically modest, which makes the case for variable weaker than it was at 3% when the premium was large.
How does a 5/1 ARM differ from a 7/6 ARM?
The first number is the fixed period; the second is the adjustment frequency in months. A 5/1 ARM has a 5-year fixed period then adjusts annually. A 7/6 ARM has a 7-year fixed period then adjusts every 6 months. The 7/6 provides two more years of rate certainty but adjusts more frequently once it starts floating. Most borrowers who sell or refinance within 7 years never reach the adjustable phase, which is why shorter holding horizons can make ARMs sensible even at today's rates.
What index do US ARMs typically use?
Most US ARMs issued since 2020 use the Secured Overnight Financing Rate (SOFR) as the index, following the industry transition away from LIBOR. The rate is SOFR + a fixed margin set at origination. SOFR is published daily by the New York Federal Reserve. The margin does not change; only the SOFR index moves, which is what causes ARM payments to adjust.