Mortgage Calculator Ontario 2026
Enter a home price, down payment, and rate to calculate your real Ontario mortgage payment. See CMHC insurance, total interest, your balance at the end of the term, and a full amortization schedule, all using Canada's semi-annual compounding. No name, no email, no credit check.
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| Year | Principal | Interest | Balance |
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Book a free 15-min call with Jenny →Disclaimer: This estimate is for illustration only and is not a mortgage commitment, pre-approval, or guarantee of financing. Actual payments depend on lender approval, your full financial profile, and the rate and terms offered. Jenny Tate, Mortgage Agent Level 1, FSRA #M22002086, Tango Financial Inc. FSRA #13691.
How a mortgage payment is calculated in Ontario
Every mortgage payment splits into two parts: interest (the cost of borrowing) and principal (the amount that actually pays down your balance). Early in the amortization, most of each payment is interest. Late in the amortization, most of it is principal. The calculator above shows this shift in the schedule.
The one detail that trips people up is compounding. In the United States, mortgages compound monthly. In Canada, fixed-rate mortgages compound semi-annually by law. That means your annual rate is not simply divided by twelve. The calculator converts the rate using the effective periodic formula: take one plus half the annual rate, raise it to the power of two divided by the number of payments per year, and subtract one. At 5 percent, the effective monthly rate works out to about 0.4124 percent rather than the 0.4167 percent a naive divide-by-twelve would give. The gap is small per month and large over 25 years.
This is also why you should never trust an American mortgage calculator for an Ontario purchase. It will quietly overstate your payment, and the error compounds.
What affects your mortgage payment
Five inputs move the number, in roughly this order of impact:
- Mortgage amount. The biggest lever. A larger down payment shrinks the amount you borrow and can also eliminate CMHC insurance.
- Interest rate. On a $500,000 mortgage, half a percentage point is roughly $140 per month and tens of thousands over the amortization. This is why shopping the rate matters.
- Amortization. Stretching from 25 to 30 years lowers the payment but raises total interest. Shortening to 20 does the reverse.
- Payment frequency. Accelerated options quietly pay the mortgage down faster (more on this below).
- CMHC insurance. If you are under 20 percent down, the premium gets added to your balance, so you pay interest on it for the life of the loan.
CMHC insurance: when it applies and what it costs
If your down payment is less than 20 percent of the purchase price, your mortgage is a high-ratio mortgage and must be insured. The insurer (CMHC, Sagen, or Canada Guaranty) protects the lender if you default. You pay the premium, and it is added to your mortgage balance rather than paid in cash, so you carry interest on it.
| Down payment | CMHC premium (of mortgage) |
|---|---|
| 5% to 9.99% | 4.00% |
| 10% to 14.99% | 3.10% |
| 15% to 19.99% | 2.80% |
| 20% or more | No premium |
One Ontario-specific catch: the province charges 8 percent provincial sales tax on the CMHC premium, and unlike the premium itself, that PST cannot be added to the mortgage. You pay it in cash at closing. On a premium of $18,000, that is $1,440 due on closing day that many buyers forget to budget.
Payment frequency: monthly, biweekly, and the accelerated trick
The frequency you choose changes how fast the mortgage disappears. There are five common options, and the difference between two of them is worth real money.
- Monthly. 12 payments a year. The default.
- Biweekly. Your monthly payment times 12, divided by 26. Same annual total as monthly, just spread out. Barely changes your interest.
- Accelerated biweekly. Your monthly payment divided by 2, paid every two weeks. Because there are 26 biweekly periods, you make the equivalent of 13 monthly payments a year instead of 12. That extra payment goes straight to principal.
- Weekly and accelerated weekly work the same way at 52 payments a year.
Accelerated biweekly is the quiet winner. On a $500,000 mortgage at 5 percent over 25 years, switching from monthly to accelerated biweekly shaves roughly three years off the amortization and saves tens of thousands in interest, without the payment feeling much different in your bank account. Select it in the calculator above and the savings box shows your exact number. It is the closest thing to a free lunch in a mortgage.
Ontario closing costs and land transfer tax
Your payment is only part of the picture. Closing costs in Ontario typically run 1.5 to 4 percent of the purchase price, and the largest piece is land transfer tax.
Ontario charges a provincial land transfer tax on a sliding scale. Buyers within the City of Toronto pay a second, municipal land transfer tax on top of the provincial one, which roughly doubles that line item. On a $750,000 home, the provincial tax alone is about $11,475, and a Toronto buyer pays close to that again municipally.
First-time buyers catch a break: the provincial rebate is up to $4,000, and the Toronto rebate is up to $4,475, so a first-time buyer in Toronto can recover up to $8,475. Other closing costs include legal fees (roughly $1,500 to $2,500), title insurance, a home inspection, and the CMHC PST mentioned above.
Three Ontario examples, run through this calculator
Example 1: First condo, $550,000 in Mississauga, 10% down
Price $550,000, down payment $55,000 (10 percent), so a $495,000 base mortgage. CMHC at 3.10 percent adds about $15,345, for a $510,345 mortgage. At 5 percent over 25 years, monthly is roughly $2,968. Switch to accelerated biweekly and the same buyer pays about $1,484 every two weeks and finishes years early.
Example 2: Family home, $900,000 in Scarborough, 20% down
Price $900,000, down payment $180,000 (20 percent), so a $720,000 mortgage with no CMHC. At 5 percent over 25 years, monthly is about $4,188. Over the full amortization, total interest is well over $500,000, which is exactly why a quarter-point on the rate is worth chasing.
Example 3: Move-up buyer, $1,300,000 in Oakville, 20% down
Price $1,300,000, down payment $260,000, so a $1,040,000 mortgage. At 5 percent over 30 years, monthly is about $5,548; at 25 years it is about $6,049. The $500-per-month difference is the cost of buying yourself a lower payment, and over the life of the loan the 25-year option saves a six-figure sum in interest.
Qualifying: the stress test still applies
The calculator shows what a mortgage costs. Whether you qualify is a separate question. In Ontario, as across Canada, lenders must approve you at the higher of your contract rate plus 2 percent or the qualifying floor of 5.25 percent. So a mortgage quoted at 5 percent is tested at 7 percent. Your payment at the real rate can be comfortable while the stress test still limits how much you are approved for. To see the maximum purchase price your income supports, an affordability calculation is the right next step.
Here is what I would want my sister to know
Two things move your total cost more than anything else, and neither is the monthly payment you fixate on at the open house. The first is the rate, where a quarter point you did not bother to shop for is a car's worth of interest over the amortization. The second is the frequency, where switching to accelerated biweekly costs you almost nothing in cash flow and quietly ends the mortgage years early.
Run the calculator with the real rate someone has actually quoted you, not a round number. Then run it again at a quarter point lower, the way an agent with access to 50-plus lenders would shop it. The gap between those two numbers is usually the strongest argument for not taking the first offer the bank slides across the desk.
Frequently Asked Questions
What would the monthly payment be on a $500,000 mortgage in Ontario?expand_more
On a $500,000 mortgage at 5 percent over a 25 year amortization, the monthly payment is about $2,908 using Canada's semi-annual compounding. At 30 years it is roughly $2,668, and at 20 years about $3,284. Half a point of rate moves the payment by roughly $140 per month. Use the calculator above with the rate your agent actually quotes.
How is a Canadian mortgage payment calculated?expand_more
Canadian fixed-rate mortgages compound semi-annually, not monthly like in the US. The calculator converts your annual rate to an effective periodic rate, then applies the standard amortization formula. This is why a Canadian payment is slightly lower than a naive monthly-compounding estimate at the same rate.
What is the minimum down payment in Ontario?expand_more
Five percent on the first $500,000 of the price, and ten percent on the portion from $500,000 to $1,500,000. Homes at $1,500,000 or more need at least twenty percent down. A $700,000 home needs $25,000 plus $20,000, so $45,000 minimum.
Do I pay CMHC insurance in Ontario?expand_more
If your down payment is under twenty percent, yes. The premium is roughly 4.00 percent of the loan with 5 to 9.99 percent down, 3.10 percent with 10 to 14.99 percent, and 2.80 percent with 15 to 19.99 percent. It is added to your mortgage balance. Ontario also charges 8 percent PST on the premium, payable in cash at closing.
How much do I save with accelerated biweekly payments?expand_more
Accelerated biweekly is your monthly payment divided by two, paid every two weeks, so you make the equivalent of 13 monthly payments a year instead of 12. On a $500,000 mortgage at 5 percent over 25 years, this shaves roughly three years off the amortization and saves tens of thousands in interest. The calculator shows your exact saving when you select it.
What are closing costs on an Ontario home?expand_more
Budget roughly 1.5 to 4 percent of the price. The biggest item is Ontario land transfer tax, and Toronto buyers pay a second municipal land transfer tax on top, roughly doubling it. Add legal fees ($1,500 to $2,500), title insurance, an inspection, and CMHC PST. First-time buyers can claim up to $4,000 provincially and up to $4,475 in Toronto.
Should I choose a 25 or 30 year amortization?expand_more
A 30 year amortization lowers your payment but raises total interest, and on insured mortgages it is only available to eligible buyers under current rules. A 25 year amortization costs more monthly but builds equity faster and is cheaper overall. Compare the total interest for both in the calculator before deciding.
Is this Ontario mortgage calculator free and private?expand_more
Yes. It runs entirely in your browser. No name, email, phone, or credit check is required to see your results. An optional "email me my results" button appears after the calculation if you want a copy and want Jenny to follow up, but it is never required.
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