How to Get the Best Mortgage Rate in Canada

A mortgage is likely the biggest loan you'll ever take, so even a fraction of a percent matters — over a 25-year amortization it can mean tens of thousands of dollars. The good news: the best mortgage rate isn't luck. It comes from a handful of factors you can actually control. Here's how to put yourself in the strongest position before you sign.

Key takeaways

• Your credit score, down payment, income stability and the type of mortgage all influence the rate you're offered.
• Insured (high-ratio) mortgages often carry lower posted rates than uninsured ones, because the lender's risk is covered.
• Always shop more than one lender — the posted rate and the best available rate are rarely the same.
• Every federally regulated mortgage must pass the stress test, so qualify at the greater of your rate + 2% or 5.25%.
• HOMEH buyers can receive the industry's highest Cashback Rebate — savings that dwarf a small rate difference.

What actually drives your rate

Lenders price your mortgage based on how much risk you represent. The stronger your financial profile, the lower the rate they'll offer. A few inputs do most of the work:

• Credit score — a higher score signals reliable repayment and unlocks the best tiers.
• Down payment size — and whether your mortgage is insured or not (more on that below).
• Income and employment — stable, provable income is easier to underwrite.
• Debt load — lenders watch your GDS and TDS ratios closely.
• Mortgage type and term — fixed vs variable, open vs closed, and the length you choose.

Two of these — your debt ratios and the stress test — are non-negotiable qualification gates, so it's worth understanding them before you apply.

Debt ratios and the stress test

Before any lender talks rate, they confirm you can carry the loan. Two ratios matter. GDS (Gross Debt Service) measures your housing costs against gross income; TDS (Total Debt Service) adds all your other debts. Keeping these in check is the single best way to qualify for the rate you want.

Everyone qualifies at a higher rate

Under OSFI's B-20 rules, federally regulated lenders must qualify you at the greater of your contract rate + 2% or 5.25% — the benchmark floor. Even if your actual rate is lower, your budget has to survive that test. Run yours with the stress test calculator.

Curious how the underlying rate itself is set? Our guide on how mortgage rates are determined walks through the Bank of Canada, bond yields and lender spreads.

Insured vs uninsured: a rate surprise

It surprises many buyers that putting less down can sometimes mean a lower posted rate. With less than 20% down, your mortgage is insured (high-ratio), which removes the lender's default risk — so they price it sharply. With 20% or more down, no insurance is required, but uninsured mortgages can carry slightly higher rates.

The trade-off: insured mortgages add a CMHC premium to your loan. In Ontario you also pay 8% PST on that premium at closing.

For the full picture of how insurance works, see CMHC mortgage insurance explained.

How to shop and negotiate

The biggest mistake buyers make is taking their own bank's first offer. Posted rates are a starting point, not the floor. To get the best deal:

1. Get pre-approved so you know your real budget and lock a rate hold.
2. Compare at least three lenders — banks, credit unions and broker channels.
3. Weigh the full term and features, not just the headline number (prepayment options, portability, penalties).
4. Decide between fixed and variable for your risk tolerance — see fixed vs variable.
5. Use a broker to access multiple lenders at once — read what is a mortgage broker.

Look past the rate

A slightly higher rate with a low penalty and generous prepayment privileges can beat a rock-bottom rate that traps you. Learn more in prepayment privileges and mortgage penalties explained.

The bigger win: HOMEH cashback

Chasing the last 0.1% on your rate is worthwhile — but there's a far larger lever most buyers overlook. The commission side of a deal is flexible in a way government taxes and lender rates aren't.

Cashback can dwarf a rate difference

Eligible HOMEH buyers receive the industry's highest Cashback Rebate — often worth far more than shaving a fraction off your rate. Sellers list for 1%, or free when they also buy with HOMEH within 6 months, or $395 + HST with a Mere Posting. Estimate your numbers with the mortgage calculator, then start your application at get a mortgage.

For the foundations behind all of this, our pillar guide on how mortgages work in Canada ties the pieces together.