Canadian mortgages compound semi-annually, amortize over 25 years, and require a federal stress test - this calculator handles all three. Enter your price, down payment, and rate to get an accurate payment in Canadian dollars and see your qualifying figure at the stress-tested rate.
Modify the values and click the calculate button to use
This Canadian mortgage calculator is designed specifically for Canada's lending framework, not adapted from a US tool. It accounts for semi-annual compounding, the federally mandated method for fixed-rate Canadian mortgages, which produces a slightly different payment than simple monthly compounding. It defaults to a 25-year amortization, the standard in Canada, while letting first-time buyers and new-build purchasers model the 30-year option available on insured mortgages since December 2024. Crucially, it applies the mortgage stress test, showing whether you qualify at the higher of 5.25% or your contract rate plus two percent. It also estimates CMHC mortgage default insurance when your down payment is below twenty percent. All figures are in Canadian dollars for buyers across every province.
Enter the home purchase price in Canadian dollars.
Input your down payment as a dollar amount or percentage of the price.
Enter your mortgage interest rate, such as a five-year fixed or variable rate.
Choose your amortization period, typically 25 years or 30 if you qualify.
Select your payment frequency: monthly, biweekly, or accelerated biweekly.
Review your estimated regular payment calculated with semi-annual compounding.
Check the stress test result to confirm the qualifying rate you must pass.
Note any CMHC insurance premium added when your down payment is under twenty percent.
The calculator first determines your mortgage principal by subtracting your down payment from the purchase price, then adds any CMHC insurance premium if your down payment is below twenty percent. Because Canadian fixed mortgages compound semi-annually, it converts your annual rate into an effective semi-annual rate, then into an equivalent monthly rate for payment purposes, rather than simply dividing by twelve. The payment formula is: payment = principal × r ÷ (1 − (1 + r)^−n), where r is that adjusted periodic rate and n is the number of payments across your amortization. For the stress test, it recalculates qualifying affordability using the higher of 5.25% or your rate plus two percent, currently around 6.0% to 6.4%, to confirm you could handle higher rates.
Your result has several Canadian-specific parts. The regular payment is what you pay each period under semi-annual compounding, the legally required method for fixed mortgages here. The stress test qualifying figure is separate and often eye-opening: even if your contract rate is 4.5%, you must prove you can afford payments at roughly 6.5%, which lowers the maximum mortgage you qualify for. If your down payment is under twenty percent, the CMHC premium is added to your principal, increasing both your loan and your payment. The amortization length shapes the payment heavily: a 25-year term costs more monthly but far less interest overall than a 30-year term. Use these figures together to understand both what you will pay and what you can borrow.
Several uniquely Canadian factors drive your result.
The compounding method matters because semi-annual compounding on fixed mortgages yields a slightly lower effective monthly rate than US-style monthly compounding. Your down payment size determines whether CMHC insurance applies; below twenty percent triggers a premium that can add thousands to your principal. The stress test is decisive for qualifying, since you must pass at a rate well above your contract rate. Amortization length trades monthly affordability against total interest, with 25 years standard and 30 years available on insured mortgages for eligible buyers. Payment frequency is a quiet lever: accelerated biweekly payments squeeze in the equivalent of one extra monthly payment per year, shortening your amortization noticeably.
Priya buys a $600,000 home in Ontario with a 20% down payment of $120,000, taking a $480,000 mortgage at a 4.5% five-year fixed rate over 25 years. With semi-annual compounding, her monthly payment comes to roughly $2,655. Because her down payment is 20%, no CMHC premium applies. Under the stress test, she must qualify at about 6.5%, where the payment would be near $3,200, so the lender confirms she can handle that higher figure.
Daniel buys a $500,000 condo with a 10% down payment of $50,000, leaving a $450,000 mortgage. Because his down payment is under 20%, CMHC insurance at roughly 3.10% adds about $13,950 to his principal, bringing it to about $463,950. At a 4.6% rate over 25 years with semi-annual compounding, his monthly payment is approximately $2,585, and he must still pass the stress test near 6.6%.
Always check the stress test figure, not just your contract payment, since it determines the maximum mortgage you actually qualify for.
Aim for a 20% down payment when possible to avoid the CMHC premium that inflates your loan.
Consider accelerated biweekly payments, which add roughly one extra monthly payment a year and trim years off your amortization.
Remember that a 30-year amortization lowers monthly cost but raises total interest substantially over the life of the loan.
Budget for closing costs like land transfer tax, which the mortgage payment alone does not include.
Re-run the calculator at renewal, since Canadian terms are typically five years and your rate will reset.
It estimates your mortgage payment using Canadian rules, including semi-annual compounding and 25-year amortization. It also shows your stress test qualifying rate and any CMHC insurance premium.
It requires you to qualify at the higher of 5.25% or your contract rate plus two percent. This proves you could afford payments if rates rose, limiting how much you can borrow.
Federal law requires fixed-rate Canadian mortgages to compound interest twice a year rather than monthly. This produces a slightly lower effective monthly rate than US-style monthly compounding.
CMHC mortgage default insurance is required when your down payment is less than twenty percent of the purchase price. The premium is added to your mortgage principal.
Twenty-five years is the standard amortization. Since December 2024, 30-year amortizations are available on insured mortgages for first-time buyers and purchasers of new builds.
A larger down payment, a longer amortization, or a lower rate all reduce the payment. Accelerated biweekly payments instead pay the mortgage off faster while raising annual cost slightly.
Yes, it is completely free with no signup. Enter your price, down payment, rate, and amortization to instantly see your payment and stress test figure.
Brief disclaimer: This calculator provides estimates for educational and planning purposes only. Actual mortgage terms, rates, stress test thresholds, and CMHC premiums depend on your lender, credit profile, and regulatory guidelines. Results should be treated as planning guidance rather than financial or mortgage advice.