How to Compare Mortgage Rates in Canada

To compare mortgage rates honestly, you have to compare the annual percentage rate, the term, and the conditions attached to each offer, not just the headline number. Two lenders can advertise the same rate and deliver very different costs once fees, penalties, prepayment limits, and compounding are counted. The goal is not the lowest rate on the page but the lowest total cost for the mortgage you actually need.

This matters because a mortgage is a contract, not a price tag. The rate is one term among several, and the others can quietly outweigh a small difference in rate.

Start with the APR, not the headline rate

The annual percentage rate (APR) expresses the cost of borrowing as an annual rate that includes the interest rate plus certain fees. It is designed so that offers with different fee structures can be compared on a like-for-like basis. If one lender charges an administration fee and another does not, the APR surfaces that difference.

Canadian mortgages also compound semi-annually by convention, which affects the effective cost. Ask each lender for the APR in writing alongside the nominal rate, and treat the nominal rate as only the starting point of the comparison.

How to compare rates: step by step

1. Decide your structure first. Fixed or variable, and how long a term. Comparing a variable rate against a fixed rate is comparing two different products, as the fixed vs variable guide explains.
2. Collect at least three written quotes. Ask a bank, a credit union or broker channel, and one more lender, all on the same day, and record the rate, APR, term, and fees.
3. Normalise the terms. Line up the amortization, payment frequency, and prepayment privileges so you are comparing equivalent contracts.
4. Price the exit. Ask how the prepayment penalty is calculated on a fixed versus variable product, and whether it uses the posted or contract rate.
5. Convert the rate into a payment. Use the mortgage payment calculator so you can see the monthly difference, not just the decimal.
6. Confirm what is guaranteed. Ask whether the quote is a rate hold and how long it lasts.

What a complete mortgage rate quote should include

A rate on its own is not a quote. A complete offer names the rate, the APR, the term, the amortization, the payment frequency, and the prepayment privileges, along with any fees. Ask for all of it in writing, because a verbal rate with no terms attached cannot be compared with anything.

• The discounted rate and the posted rate it came from.
• The APR and the total cost of borrowing.
• The term, amortization, and payment frequency.
• The annual prepayment allowance and whether unused room carries forward.
• The penalty formula and an example calculation.
• Any setup, appraisal, discharge, or switching fees.

Once every offer is laid out the same way, the comparison becomes mechanical rather than a matter of impression. Keep the documents together so you can refer back to them if a term changes later.

The terms that change the real cost

Why two identical rates can cost different amounts

Imagine two five-year fixed offers at the same rate. One allows prepayments of a generous percentage of the original principal each year, the other allows very little. If you plan to pay the mortgage down aggressively, the flexible product can save far more than the rate difference suggests, while the restrictive product may force you into a penalty to prepay.

Now imagine one lender calculates a break penalty using the interest rate differential and the other uses a simpler formula. If you might sell or refinance early, the penalty exposure can dwarf a small rate advantage. This is why comparing rates without comparing exit costs is incomplete.

Questions to ask every lender

• What is the discounted rate, and what is the APR?
• How is the prepayment penalty calculated if I break the term?
• How much can I prepay each year without a penalty, and does unused room carry forward?
• Is the mortgage portable, assumable, or convertible, and at what cost?
• Are there any fees to set up, discharge, or switch the mortgage?
• What is the hold period on this quote?

Write the answers down next to each offer. The exercise usually reveals that the cheapest-looking rate is not always the cheapest mortgage, and it gives you a record if a lender later changes its position.

Mistakes when comparing rates

The most common error is comparing a discounted rate from one lender against a posted rate from another, which flatters whichever lender publishes the lower posted number. The second is ignoring the term, so a short promotional rate looks better than a longer, more stable one.

A third mistake is forgetting the qualifying rules. The federal stress test means you must qualify at a higher rate than the one you pay, so an offer that looks affordable may still not be one you can get. Confirm current rates, penalties, and qualification rules directly with each lender before you decide.