Canadian Mortgage Calculator
Calculate your monthly mortgage payments with semi-annual compounding, CMHC insurance, and stress-test validation.
Calculate Canadian mortgage payments with semi-annual compounding and amortization.
For personal planning only — not financial advice.
Reviewed by CalculatorDrive Finance Editorial Board · Last updated
Mortgage Details
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Enter your property details, down payment, and mortgage preferences to see your estimated monthly payments and amortization schedule.
Monthly Payment Principal & Interest
Total monthly carrying cost: $0
Monthly Cost Breakdown
Term Summary (5 Years)
Potential Savings!
By choosing an accelerated payment schedule, you could save $0 in interest and be mortgage-free 0 years sooner.
Complete Canadian Mortgage Guide
Canadian mortgages, in short
Canadian mortgages compound semi-annually by law, not monthly like in the U.S., which slightly lowers the effective rate used to calculate your payment. On a $500,000 home with 10% down at 5.5%, that means a $450,000 base mortgage plus a $13,950 CMHC insurance premium (required below 20% down), for a $2,831.91 monthly payment over a 25-year amortization.
Key takeaways
- On the default $500,000 home, 10% down, 5.5%, 25-year example: CMHC premium is $13,950 (3.10% of the $450,000 base mortgage), bringing the total mortgage to $463,950 and the monthly payment to $2,831.91.
- Semi-annual compounding turns a 5.5% quoted rate into a 5.5756% effective annual rate — slightly higher than 5.5%, but still calculated differently than a U.S. mortgage compounding monthly at the same quoted rate.
- Over a 5-year term, that mortgage accrues about $119,750 in interest and only $50,165 in principal — the balance owing at renewal is still around $413,785 of the original $463,950.
- Switching to accelerated bi-weekly payments on the same mortgage pays it off about 3.7 years early and saves roughly $66,550 in interest over the life of the loan.
How is a Canadian Mortgage Different?
Semi-Annual Compounding
Unlike US mortgages which often compound monthly, Canadian mortgages typically compound semi-annually (twice a year). This means the 'Effective Annual Rate' (EAR) is slightly lower than if it were compounded monthly, saving you money on interest.
Term vs. Amortization
The 'Amortization' is the total life of your loan (e.g., 25 years). The 'Term' is how long your rate is locked in (e.g., 5 years). You will renew your mortgage multiple times over its life, potentially at different rates.
Understanding Payment Frequencies
Choosing the right payment frequency can help you become mortgage-free faster.
Like making one extra monthly payment per year!
CMHC Insurance Rules
In Canada, if your down payment is less than 20% of the home price, you are required to purchase mortgage default insurance (commonly from CMHC). This protects the lender if you default.
- ✓ Required for down payments between 5% and 19.99%
- ✓ The premium is usually added to your mortgage amount
- ✓ Not available for homes over $1,000,000
- ✓ Max amortization is 25 years for insured mortgages
| Down Payment | Premium |
|---|---|
| 5% - 9.99% | 4.00% |
| 10% - 14.99% | 3.10% |
| 15% - 19.99% | 2.80% |
| 20% + | 0.00% |
The Formula
Canadian mortgages use a specific formula for the effective monthly rate due to semi-annual compounding:
Effective Monthly Rate (r)
Monthly Payment (M)
Glossary of Terms
High-Ratio Mortgage
A mortgage where the down payment is less than 20% of the home's value. These require mortgage default insurance.
Conventional Mortgage
A mortgage with a down payment of 20% or more. Mortgage default insurance is typically not required.
Stress Test
Banks must qualify you at a rate higher than your contract rate (usually the benchmark rate of ~5.25% or your rate + 2%) to ensure you can afford payments if rates rise.
Common questions
How does Canadian mortgage compounding differ from U.S. mortgages?
Canadian mortgages typically compound interest semi-annually, not monthly. This means the effective interest rate is slightly lower than the nominal rate quoted — a key reason Canadian and U.S. payment estimates differ even at the same stated rate.
What is CMHC mortgage insurance?
CMHC (Canada Mortgage and Housing Corporation) insurance is required when your down payment is below 20%. The premium is added to your mortgage balance and increases your payment. Minimum down payments range from 5% to 10% depending on purchase price.
What is the Canadian mortgage stress test?
Federal rules require borrowers to qualify at the higher of their contract rate plus 2% or the benchmark qualifying rate. This ensures you can afford payments if rates rise. This calculator can flag whether your payment passes the stress test.
What is the difference between amortization and mortgage term in Canada?
Amortization is the total time to pay off the loan (e.g., 25 years). The mortgage term is the length of your rate contract (often 1–5 years), after which you renew or refinance. Payment calculations use the amortization period.
Are property taxes and insurance included?
Canadian mortgage payments from this calculator focus on principal, interest, and CMHC premium. Property taxes and home insurance are often paid separately, though some lenders offer escrow-style arrangements.
How do I use this Canadian mortgage calculator?
Enter home price, down payment percentage, interest rate, and amortization period. Add optional property tax and insurance, then click Calculate to see your monthly payment, CMHC premium, and stress-test qualification result.
About this page
- Last reviewed:
- Written by:
- CalculatorDrive editorial team
- Reviewed by:
- CalculatorDrive finance editorial board
- How we build financial content:
- Canadian mortgage math accounts for semi-annual compounding as described in FCAC (Financial Consumer Agency of Canada) homebuying resources.
About CalculatorDrive Canadian lenders apply stress-test rules, CMHC insurance, and provincial taxes not fully modeled here. Confirm terms with your mortgage broker.