Markham · Ontario · 2026
Ontario Mortgage Calculator: Know Your Numbers Before You Buy
Calculate your payment, CMHC insurance, stress test qualifying rate, and a full year-by-year amortization for any Markham purchase. Built to the Canadian Bank Act's semi-annual compounding and Ontario's 2026 lending rules, so the numbers match what your lender will show you.
Mortgage Calculator
Canadian mortgages compound semi-annually under the Bank Act. This calculator uses the effective per-period rate (1 + rate ÷ 2)^(2 ÷ periods per year) − 1, which is how TD, RBC, and Ratehub compute payments.
Mortgage Stress Test, 2026
Year-by-Year Breakdown
Full Amortization Schedule
How much of each year's payments goes to principal versus interest, and how quickly your equity builds. Semi-annual compounding, as your lender calculates it.
| Year | Payments | Principal | Interest | Balance | Equity Built |
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Understanding Your Numbers
What the Rules Mean for Markham Buyers
The stress test, in plain terms
Every borrower must qualify at the greater of their contracted rate plus 2% or 5.25%, OSFI's minimum qualifying rate. Offered 5%? You must qualify at 7%. On a $1,000,000 purchase with 20% down, that reduces your maximum approved amount by roughly $150,000 to $200,000 compared with qualifying at the actual payment. Start with a pre-approval, not a home search.
CMHC insurance rates, 2026
Required when your down payment is under 20%. The premium is added to your mortgage balance, not paid in cash. Since December 15, 2024 the maximum insurable purchase price is $1,500,000.
- 5% to 9.99% down: 4.00% of the mortgage
- 10% to 14.99% down: 3.10%
- 15% to 19.99% down: 2.80%
- 20% or more: no CMHC required
- Over $1,500,000: not insurable, 20% minimum down
Example: $1,000,000 with 10% down ($100,000) → 3.10% × $900,000 = $27,900 added to the mortgage.
Why Canadian mortgage math is different
Under the Bank Act, mortgage interest compounds semi-annually, not monthly as in the United States. The effective monthly rate is (1 + annual rate ÷ 2)^(1/6) − 1. For a 5.00% nominal rate, that is 0.41239% per month rather than 0.41667%. Small on paper; thousands of dollars over 25 years. This calculator uses the correct Canadian formula.
Minimum down payment rules, Canada 2026
- Up to $500,000: 5%
- $500,001 to $1,499,999: 5% on the first $500,000 plus 10% on the rest
- $1,500,000 and above: 20%, and CMHC is not available
$900,000 home: $25,000 + $40,000 = $65,000 minimum. $1,200,000 home: $25,000 + $70,000 = $95,000 minimum (7.92%).
Accelerated versus regular bi-weekly
Regular bi-weekly divides the annual payment by 26, so you pay the same total as monthly. Accelerated bi-weekly takes the monthly payment, halves it, and pays it 26 times, which is one extra monthly payment a year. On a typical Markham mortgage that shortens a 25-year amortization by two to three years and saves tens of thousands in interest. Toggle it above to see the exact effect on your numbers.
30-year amortization, December 2024 reform
Since December 15, 2024, a 30-year amortization is available on insured mortgages (under 20% down) for first-time buyers and for anyone buying a newly built home. It lowers the payment but raises total interest, and CMHC adds a 0.20% premium surcharge for amortizations over 25 years. Other insured buyers remain at a 25-year maximum. Uninsured mortgages (20% or more down) can already run 30 years at most lenders.
Markham buyers should also budget for property tax (roughly $450 to $900 a month depending on assessed value), home insurance ($150 to $250), utilities ($200 to $400), a maintenance reserve (about 1% of the home's value a year), and condo or maintenance fees where they apply. Michael models the full monthly picture with every buyer before an offer. Closing costs are separate again; see the full breakdown.
Mortgage Questions
Borrowers must qualify at the greater of their contract rate plus 2% or 5.25%. If your lender offers 4.5%, you qualify at 6.5%; if it offers 5%, you qualify at 7%. The test applies to insured and uninsured mortgages at federally regulated lenders, and it typically reduces what a buyer can borrow by 15% to 20% compared with qualifying at the actual rate.
It depends on the down payment. With the minimum $75,000 down (7.5%), the premium is 4.00% of the $925,000 mortgage, or $37,000. With 10% down, it is 3.10% of $900,000, or $27,900. With 15% down, 2.80% of $850,000, or $23,800. At 20% down no insurance is required. The premium is added to the mortgage balance rather than paid in cash at closing.
Canadian mortgages compound semi-annually under the Bank Act; American ones compound monthly. At the same nominal rate the Canadian effective monthly rate is slightly lower, so the payment is slightly lower too. A U.S.-style calculator will overstate a Canadian payment by a small amount each month and by thousands over a full amortization. This calculator uses the Canadian formula.
$95,000: 5% on the first $500,000 ($25,000) plus 10% on the remaining $700,000 ($70,000), which works out to 7.92%. Because the price is under $1,500,000 and the down payment is under 20%, CMHC insurance applies. Above $1,500,000 the minimum is 20% and insurance is not available.
If your cash flow allows it, usually yes. Accelerated bi-weekly payments equal one extra monthly payment a year, which on a typical Markham mortgage shortens a 25-year amortization by two to three years and saves tens of thousands in interest, with no prepayment penalty because it is a payment frequency, not a lump sum. Toggle it in the calculator above to see your exact saving.
Ready to Buy in Markham?
Know Your Numbers. Find Your Home.
Once your pre-approval is in hand, Michael John Lau guides you through every step of the Markham buying process, from neighbourhood selection to closing day. The team includes a licensed mortgage agent, so financing questions get answered alongside the search.
Call (416) 700-0286Email info@callmikelau.com
Read Buyer services
Michael will be in touch personally within 24 hours. For anything urgent, call (416) 700-0286.
This calculator is for planning and education only. Results are estimates based on the inputs you provide and the lending rules in effect in 2026; your lender's figures, rate, amortization, and insurance premium will govern. Not financial or mortgage advice; speak with a licensed mortgage professional before making decisions.