Canadian semi-annual compounding — powered by usecos
OSFI compliant · CMHC rules · Stress test
Methodology: OSFI B-20 · CMHC premium tables · Canadian semi-annual compounding
A mortgage calculator shows exactly what hits your bank account each pay period. No data stored — just instant results.
Our mortgage payment calculator uses Canadian semi-annual compounding — the same method used by major Canadian lenders and regulated by OSFI Guideline B-20. Unlike US mortgages that divide the annual rate by 12, Canadian mortgages compound interest every six months. This means your effective monthly rate is slightly different — and our calculator handles this conversion automatically.
Compare GST/HST rates by province or use our free GST calculator to estimate sales tax on your new home. See paycheck deductions to plan your take-home pay budget. Enter your property price, down payment, interest rate, and amortization period below. You will instantly see your estimated monthly payment, total interest, CMHC insurance premium (if applicable), and your OSFI stress test qualifying rate. All calculations run locally in your browser — no data is ever stored or shared.
Monthly Payment
$2,326.42
25 year amortization
Judgment Grade
✅ Safe Buy
Affordable terms — your mortgage looks manageable
💡 You'll pay $297,925.98 in interest over the life of the mortgage
✅ Income required: $86,205.00/year (GDS 39%)
📊 First 5 years: 11.49% of payments build equity, rest is interest
LOAN
$400,000.00
INTEREST
$297,925.98
TOTAL COST
$697,925.98
DOWN PAYMENT
$100,000.00
Adjust Amortization
25 Years
Total Interest
$297,925.98
How much can you afford?
Your maximum affordable home price is roughly 4-5× your annual income with 20% down, minus existing debts.
Most lenders use GDS (Gross Debt Service) ratio of 39% and TDS (Total Debt Service) ratio of 44%. Your monthly housing costs should not exceed 39% of your gross income. Use our calculator to estimate your maximum affordable price based on your income and down payment.
Canadian mortgages use semi-annual compounding — the annual rate is converted to a monthly rate using the formula (1 + rate/200)^(2/12) − 1.
Canadian mortgages use semi-annual compounding, not monthly. The annual rate is converted: monthlyRate = (1 + rate/200)^(2/12) - 1. This differs from US mortgages. Our calculator handles this automatically per OSFI Guideline B-20.
CMHC insurance is mandatory when your down payment is less than 20% of the purchase price for homes under $1 million.
CMHC mortgage default insurance is mandatory when your down payment is less than 20% for homes under $1,000,000. Premiums range from 2.8% to 4.0% of the loan amount, added to your mortgage balance.
You must qualify at the higher of your contract rate plus 2% or 5.25% — whichever is greater.
The OSFI stress test requires you to qualify at the greater of your contract rate plus 2% or 5.25%. Even if you qualify for a 4.5% rate, you must prove you can afford payments at 6.5% or 5.25%, whichever is higher.
Extend your amortization, make a larger down payment, switch to accelerated bi-weekly payments, or negotiate a lower rate.
Extend your amortization period (up to 30 years), make a larger down payment to avoid CMHC, choose accelerated bi-weekly payments (26/year instead of 24), or negotiate a lower interest rate. Shop multiple lenders for best rates.
Fixed mortgage rates in Canada range from 4.0% to 5.5% in 2026 depending on term, credit score, and lender.
As of 2026, fixed mortgage rates typically range from 4.0% to 5.5% depending on term length and credit score. Variable rates are slightly lower but fluctuate with the Bank of Canada overnight rate. Compare multiple lenders for the best offer.