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Rates & the Bank of Canada
What prime means for your mortgage
Prime is a reference rate set by your lender. If your mortgage rate is linked to prime, a change can affect your interest costs and possibly your payment. Understanding the connection helps you read an offer without confusing the lender’s prime rate with the Bank of Canada’s policy rate.
3 min read · Updated 2026-11-10
Prime and the policy rate are different
The Bank of Canada influences short-term interest rates through its target for the overnight rate. Your lender’s prime rate is a separate reference used to price certain lending products. The two are connected, but they are not interchangeable numbers and are not set by the same organization.
Use the Bank of Canada’s policy interest rate page for official policy information. For the prime rate that applies to your mortgage, check your lender’s published information and your agreement. An announcement about monetary policy is not, by itself, a statement of your individual mortgage rate.
This distinction matters when comparing offers. A prime-linked mortgage needs both pieces: the particular reference rate and the adjustment applied to it. Looking only at the adjustment can leave you comparing products on an incomplete basis.
How prime connects to a variable mortgage
A variable mortgage commonly uses a formula such as the lender’s prime rate minus an agreed discount, or prime plus an agreed premium. The formula explains how the mortgage rate is determined. Confirm whether that adjustment remains in place throughout the term and what happens at renewal.
When the applicable prime rate changes, your mortgage interest rate changes according to the contract. Ask when the change takes effect and how the lender communicates it. A quoted payment from an earlier conversation may need updating before you make a borrowing decision.
A fixed-rate mortgage works differently: its interest rate stays fixed during the agreed term. A prime-rate announcement does not reset that existing fixed rate. At renewal, you choose from the options available then rather than automatically keeping the previous contract.
Your payment structure matters
With an adjustable-payment variable mortgage, payments generally move when the interest rate changes. With a fixed-payment variable mortgage, the payment may initially stay the same while the split between principal and interest changes. The label alone is not enough; ask how the product operates.
If interest costs rise under a fixed-payment structure, less of the payment reduces the balance. At the trigger rate, the payment covers only interest. Contractual limits may eventually require action, so a stable payment should not be mistaken for a stable borrowing cost.
Compare both structures using a household budget that includes property tax, heating, other debts and savings. Leave room for changes rather than choosing a payment you can manage only under one set of conditions. This is planning, not a forecast of rates.
What to check before choosing
Ask for the rate formula, payment structure, prepayment privileges and conversion rules in writing. If you might move or refinance during the term, review the break-cost provisions too. A rate comparison is more useful when the contracts offer similar flexibility.
Keep your latest statement and mortgage agreement together. If the payment changes, compare the lender’s notice with the formula in your agreement. If the payment does not change, check whether the balance is declining as expected and whether your repayment schedule has shifted.
For a Bedford or Halifax household, the practical question is not just what prime means nationally. It is how this particular mortgage fits your monthly cash flow and future plans. Rahul can help you compare the structure without relying on predictions about the next announcement.
- Which published prime rate does this contract use?
- Does the payment adjust, or does the principal-and-interest split adjust?
- What happens at the trigger rate or another contractual limit?
- What fixed-rate conversion options are available?
Frequently asked questions
Is prime the Bank of Canada rate?
No. The Bank sets its policy rate. Your lender sets the prime rate used in your mortgage contract.
Do all lenders use the same prime rate?
Do not assume so. Confirm the reference rate for each offer, including whether the product uses a specifically named mortgage prime rate.
Will my variable payment always change?
No. Adjustable-payment and fixed-payment variable mortgages respond differently. Your contract explains when a payment adjustment is required.
Does prime change my existing fixed rate?
Not during the fixed-rate term. Your renewal or a change to the contract is a separate decision.
Where should I check the applicable rate?
Use your lender’s official information for its prime rate and the Bank of Canada’s official page for the policy rate.
Sources
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