What Will Your Monthly Mortgage Payment Be in Ontario?

How your Ontario mortgage payment is calculated

Four factors decide your payment:

• Mortgage amount — your purchase price minus your down payment, plus the mortgage default insurance premium if you put down less than 20%. That premium is usually rolled into the loan, so you pay interest on it too.
• Interest rate — fixed or variable. Even a small rate difference meaningfully changes your monthly cost.
• Amortization — the total time to pay off the loan. Insured mortgages (under 20% down) cap at 25 years, or 30 for first-time buyers and new builds. With 20% down, 30 years is generally available to anyone. A longer amortization lowers each payment but costs more interest overall.
• Payment frequency — monthly, bi-weekly, or accelerated bi-weekly.

Example: payment on an average Ontario home

The average Ontario home sold for $797,486 in July 2026, down 2.9% from a year earlier. With 20% down, that’s roughly a $638,000 mortgage. At a 4.5% rate over 25 years, that works out to about $3,531 per month in principal and interest. Stretched to 30 years, about $3,217. Your real number depends on today’s rate and your exact down payment — the calculator above gives you the precise figure.

Monthly vs. accelerated bi-weekly — pay off faster

Choosing accelerated bi-weekly payments means you make the equivalent of one extra monthly payment each year. On a $638,000 mortgage at 4.5%, that shortens a 25-year amortization to roughly 21 and a half years and saves about $64,000 in interest, without a big change to your budget.

What this payment does not include

Your mortgage payment is only part of your monthly housing cost. Budget separately for property taxes, home insurance, utilities/heating, and condo or POTL fees if applicable. Property tax rates vary widely across Ontario, from roughly 0.7% of assessed value in Toronto to about 1.8% in cities like Windsor and Thunder Bay, so the same purchase price can carry very different monthly costs depending on where you buy. Some lenders collect property tax alongside your mortgage payment and remit it for you. Lenders count all of these when they qualify you, so they matter for approval too.

What you’ll actually qualify for

Approval isn’t based on the payment you see above. Federally regulated lenders must qualify you at the higher of your contract rate plus 2% or 5.25%. At a 4.5% offer, that means proving you could carry the payment at 6.5%, which on a $638,000 mortgage is roughly $4,280 per month rather than $3,531.

How to lower your monthly payment

• Increase your down payment to borrow less, and cut or avoid the insurance premium.
• Shop the rate, or lock a pre-approval to protect against increases while you look.
• Use a 30-year amortization if you qualify.
• Pay down other debts before applying to strengthen your file.