Choose between fixed and variable by testing payment stability, rate-change capacity, penalty risk, conversion terms and the time you expect to keep the mortgage.
Four points to remember
- Fixed rates provide term payment certainty but may have more complex break penalties.
- Variable rates can move with lender prime and may have fixed or adjustable payments.
- No one can reliably guarantee the future path of rates.
- Choose using budget resilience, expected life changes and contract terms.
Separate the rate from the mortgage structure
The fixed-versus-variable choice includes more than today’s percentage. Review payment type, term, prepayment privilege, conversion option, portability, penalty formula and charge registration. Two mortgages at the same rate can behave differently.
- Contract rate and term
- Fixed or adjustable payment
- Conversion conditions
- Prepayment and penalty method
- Portability and refinance options
Understand fixed-rate trade-offs
A fixed rate stays the same for the selected term and can make budgeting easier. The trade-off may be a higher starting rate or a larger prepayment penalty if the mortgage is broken early, depending on the lender and contract.
- Stable scheduled payment
- Known rate through the term
- Potential interest-rate-differential penalty
- Useful when payment certainty has high value
Understand variable-rate trade-offs
A variable rate changes with the lender’s prime-rate decisions. With adjustable payments, the payment changes when the rate changes. With fixed payments, more or less of each payment goes to interest and the lender may require action near a trigger point.
- Rate can rise or fall
- Payment may adjust or amortization may change
- Review trigger-rate provisions
- Check conversion pricing before relying on it
Stress-test the household decision
Instead of forecasting one rate path, calculate the payment if rates stay flat, rise by one percentage point and fall by one percentage point. Then consider whether a move, sale, refinance, parental leave, business change or income interruption is likely during the term.
- Monthly cash-flow buffer
- Emergency savings
- Probability of breaking the mortgage
- Comfort with changing payments
- Ability to monitor the loan
Use a repeatable five-step choice
Select the contract that remains manageable under an unfavourable scenario and flexible enough for likely life changes. Rate predictions should be secondary to affordability and terms.
- Step 1: compare payments at three rates
- Step 2: compare penalties and privileges
- Step 3: identify likely term changes
- Step 4: choose the risk level the budget can absorb
- Step 5: review the choice at renewal, not every headline
Frequently asked questions
Is a fixed or variable mortgage better in 2026?
Neither is universally better. The suitable choice depends on payment stability, risk capacity, expected changes, penalty exposure and contract terms—not only a rate forecast.
Can a variable mortgage payment stay fixed?
Some variable mortgages keep the scheduled payment fixed while the interest portion changes; others adjust the payment. Review trigger-rate and amortization provisions.
Can I convert a variable mortgage to fixed?
Many lenders offer a conversion feature, but the available fixed rate, remaining term and conditions are determined by the contract and lender at that time.
Official sources and verification
This guide prioritizes primary information from governments, regulators and CMHC. Mortgage policies change; confirm the rules that apply when you apply.
This guide and its calculators are for general education only—not an approval, commitment, or legal, tax or investment advice. Actual rates, fees, underwriting and product terms vary by lender and application.