Fixed vs Variable: Side-by-Side
| Feature | Fixed Rate | Variable Rate |
|---|---|---|
| Rate changes | Never — locked for term | Moves with Bank of Canada rate |
| Payment certainty | 100% predictable | Changes with rate moves (ARM) |
| Initial rate | Typically higher | Typically lower |
| Break penalty | IRD — can be very large | 3 months' interest only |
| Convert to other type | Not available | Can convert to fixed anytime |
| Historical performance | Wins in rising rate environments | Wins in flat/falling environments |
| Best for | Tight budgets, risk-averse borrowers | Flexible budgets, rate watchers |
The Fixed Rate Mortgage
A fixed rate mortgage locks your interest rate for the entire term — typically 1 to 5 years (10 years available). Your payment never changes. This is Canada's most popular mortgage type.
Advantages of fixed rate
- Payment certainty: You know exactly what you'll pay for the entire term. Ideal for tight household budgets.
- Rate rise protection: If rates increase during your term, your rate is protected.
- Predictable planning: Easier to plan finances and project total interest costs.
Disadvantages of fixed rate
- Higher initial rate: You're paying a premium for certainty.
- Large break penalty: The IRD penalty can be enormous if you need to break the mortgage before maturity.
- No flexibility to convert downward: If rates fall significantly, you're locked in and can't easily benefit.
The Variable Rate Mortgage
Variable rates in Canada are typically expressed as Prime minus a discount (e.g., Prime – 0.75%). When the Bank of Canada moves its overnight rate, Prime moves with it — and so does your mortgage rate.
Advantages of variable rate
- Lower initial rate: Variable rates are typically 0.20–0.50% lower than comparable fixed rates at origination.
- Lower break penalty: Only 3 months' interest — much less than IRD on a fixed.
- Can convert to fixed: If you're nervous about rising rates, you can lock in without penalty.
- Benefits from rate drops: When the BoC cuts rates, your variable rate follows — automatically.
Disadvantages of variable rate
- Payment uncertainty: Your payment changes when rates move (on ARMs). Requires budget flexibility.
- Rate risk: If rates rise significantly, your payment increases — potentially by hundreds per month.
- Psychological stress: Some borrowers find rate-watching stressful during volatile periods.
The Penalty Difference Matters
One of the most underappreciated factors in the fixed vs variable decision is the prepayment penalty. Life changes — people sell homes, get divorced, upsize, refinance — and breaking your mortgage early is more common than most buyers expect.
Real example: A $600K fixed-rate mortgage at a Big 6 bank with 2.5 years remaining can carry an IRD penalty of $25,000–$45,000. The same mortgage at a variable rate would be approximately $7,500 (3 months' interest). This single factor can outweigh years of rate savings.
If there's any chance you'll break your mortgage before maturity (relocation, growing family, income change), the variable penalty advantage deserves serious weight.
What Does the Historical Data Show?
Canadian mortgage research has consistently shown that variable rate borrowers have saved money in approximately 70–80% of historical 5-year periods. The mechanism is simple: banks price fixed rates to earn a margin over their own cost of funds at that term. Variable rates don't carry the same forward-rate premium.
Notable exceptions where fixed outperformed:
- 2021–2023: Borrowers who locked in at historically low fixed rates before the rate cycle avoided dramatic payment increases
- Early 1980s: Extreme rate volatility favoured fixed for risk management
The caveat: historical averages don't guarantee future outcomes. The correct choice depends on your specific situation, not just broad statistics.
How to Choose for Your Situation
Answer these questions honestly:
Is your budget tight?
Fixed:
Choose fixed — no payment surprises
Variable:
Variable possible if you have buffer
Do rate moves keep you up at night?
Fixed:
Fixed provides peace of mind
Variable:
Only if you can stay rational about it
Do you expect to break the mortgage early?
Fixed:
Risky — large penalty possible
Variable:
Variable penalty is much lower
What is the current rate environment?
Fixed:
Fixed better near cycle lows
Variable:
Variable better after peak rates
How long is your intended term?
Fixed:
Longer terms better for fixed certainty
Variable:
Shorter terms reduce rate risk
A licensed RateCore broker will walk through your specific financial situation and help you model the scenarios. The best choice is personal — not a universal answer.