The Fixed vs. Variable Dilemma
Family purchasing an upscale home in Byron (London)
The fixed-vs-variable choice isn't a guess — it's a math problem. We stress-test your budget against a 1% and 2% rate shock and quantify the penalty exposure of each product before you sign.
The Challenge: Torn between fixed predictability and variable savings. Bank noise causing total financial paralysis.
Our 4-Step Process
Financial Stress-Testing
Analyzed household budget variables showing how 1% shifts impact net income.
Flexibility & Penalty Analysis
Highlighted the hidden costs of breaking fixed loans early vs. simple 3-month variable penalties.
The Hybrid Fight
Negotiated with deep networks for unique options like split-term or one-way fixed conversion options.
Strategic Peace of Mind
Balanced protection against inflation while keeping structural flexibility intact.
✨ Result: Closed with absolute structural clarity, riding market rate drops down safely.
How Each Rate Type Works
A fixed-rate mortgage locks your interest rate for the term, usually five years.
Your payment stays the same until renewal, regardless of what the Bank of Canada does.
A variable-rate mortgage is priced as your lender's prime rate plus or minus a set amount, and prime generally moves when the Bank of Canada changes its policy rate. Your discount stays the same for the term, but the rate you pay moves with prime.
Two Kinds of Variable Mortgage
Variable mortgages come in two forms, and the difference matters when rates rise:
- Adjustable-rate: your payment changes every time prime changes, so the extra cost shows up in your budget straight away and your amortization stays on track.
- Fixed-payment variable: your payment stays the same while the split between interest and principal shifts. If rates rise far enough, more of the payment goes to interest and the lender may require a higher payment — the point where that happens is often called the trigger rate.
The Penalty Difference
Breaking a mortgage before maturity — to sell, refinance or move — triggers a prepayment penalty, and this is often where the two products differ most.
Variable mortgages usually charge three months' interest. Fixed mortgages usually charge the greater of three months' interest or an interest rate differential (IRD), and lenders calculate IRD in different ways.
If there's a real chance you'll sell, move or refinance during the term, the penalty can outweigh a small rate difference, so ask for the penalty formula in writing before you choose.
The Stress Test Applies to Both
With federally regulated lenders, you qualify at the greater of your contract rate plus 2% or 5.25%, whether you choose fixed or variable.
A lower variable rate doesn't usually mean you qualify for a bigger mortgage.
Questions to Decide Between Them
There is no rate type that's right for everyone.
These questions usually point toward the better fit:
- Could your budget absorb a payment that's a few hundred dollars higher if rates rise?
- Is there a realistic chance you'll sell, move or refinance in the next five years?
- Do you want to know your exact payment for budgeting, or can you live with some movement?
- Would a rate increase cause you stress even if you could afford it?
- Are you planning to make large prepayments, and do the prepayment privileges fit that plan?
Middle-Ground Options
Some lenders offer hybrid mortgages that split the balance between a fixed and a variable portion.
Many variable mortgages also let you convert to a fixed rate during the term, usually into a term at least as long as what remains. Shorter fixed terms, such as two or three years, are another way to limit how long you're locked in.
Availability and conditions differ by lender, so compare the actual terms side by side.
Frequently Asked Questions
Is a variable or fixed mortgage cheaper?
It depends on where rates go during your term, which nobody knows in advance. Compare the starting rates, how much your payment could rise under a realistic increase, and what each product would cost to break early.
Can I switch from variable to fixed later?
Many variable mortgages allow conversion to a fixed rate without a penalty, usually into a term at least as long as the remaining one. The fixed rate offered at that point is the lender's rate on that day, so check the conversion terms before you sign.
What penalty will I pay to break my mortgage?
Variable mortgages usually charge three months' interest. Fixed mortgages usually charge the greater of three months' interest or an interest rate differential, which varies by lender. Ask for the exact formula in writing.
Should I choose fixed or variable at renewal?
Renewal is a natural time to revisit the choice, because there's no penalty to change at maturity. Review your budget, your plans for the next few years and the offers available, not just the rate type you had before.