Estimate payments, compare scenarios, and understand your mortgage with Canadian rules and AI-assisted insights.
Semi-annual compounding · CMHC insurance · GDS/TDS ratios
Canadian Mortgage
Mortgage Details
20.0% of purchase price
Estimated monthly payment
$3,615.44
Want to understand where your money goes?
Monthly costs
Side-by-side
Total interest: $229,651
Total interest: $409,632
Total interest: $507,182
15-year saves $277,531 vs 30-year, but costs $1,311.44 more/month.
FinCalc Smart AI Mortgage Analysis
Score based on down payment, insurance status, and rate.
Add your annual income above to include full GDS/TDS analysis in this score.
total interest saved
Shortening the mortgage term may reduce total interest, but increases the monthly payment.
Estimate based on current inputs — actual lender results may vary.
total interest saved
Shortening the mortgage term may reduce total interest, but increases the monthly payment.
Estimate based on current inputs — actual lender results may vary.
Market Context
Your 5.25% rate avoids CMHC insurance. Total interest of $409,632 represents 79% of loan principal across your 25-year amortization. The expert insights below identify your highest-leverage optimization opportunities.
Affordability Ratios
Heating est. $150/mo for GDS.
Estimated using your entered mortgage rate. Formal lender qualification may use a higher stress-test rate.
Expert Insights
Rate Shock Analysis
A 200-basis-point rate increase at renewal would raise your payment by $624.00 to $3,722.78 at 7.25%. Maintaining this buffer ensures flexibility through rate cycles.
Amortization Compression
Increasing your P&I payment by $100.00/month to $3,198.77 delivers an estimated $29,017 reduction in total interest — minimal lifestyle impact, measurable long-term benefit.
Insurance Threshold
Not applicable — your 20.0% down payment exceeds the 20% CMHC threshold.
Disclaimer: This analysis is for illustrative purposes only and does not constitute financial, tax, or mortgage advice. Individual results will vary based on lender terms, credit profile, and market conditions. Consult a licensed mortgage professional before making financial decisions.
25-year schedule · $409,632 total interest
Your monthly principal and interest payment is derived from the standard amortization formula:
What makes Canada unique: the Interest Act (RSC 1985) mandates that residential mortgage rates be compounded semi-annually, not monthly. The effective monthly rate is:
A quoted rate of 5.25% compounded semi-annually yields an effective annual rate of approximately 5.32% — meaningfully different from a US-style monthly compounded rate.
When your down payment is below 20%, mortgage default insurance is mandatory. The premium is added to your loan balance.
| Down Payment | CMHC Premium Rate | On $600K |
|---|---|---|
| 5% – 9.99% | 4.00% | $24,000 |
| 10% – 14.99% | 3.10% | $18,600 |
| 15% – 19.99% | 2.80% | $16,800 |
| 20% or more | None | $0 |
The OSFI B-20 stress test requires you to qualify at the higher of: (a) contracted rate + 2%, or (b) 5.25%. If your lender offers 5.5%, you must prove you can afford 7.5% payments. This applies regardless of down payment size.
This calculator uses your entered contract rate for its payment, amortization, and GDS/TDS estimates — it does not apply the stress-test rate above. For a formal, stress-tested view of how much you may qualify for, use the Mortgage Qualifier Calculator.
Gross Debt Service (GDS) ≤ 32% — Housing costs (P&I + tax + heat + 50% condo fees) ÷ gross monthly income.
Total Debt Service (TDS) ≤ 44% — All debt payments ÷ gross monthly income. Financial planners recommend targeting GDS below 28% for genuine flexibility.
This calculator is for illustrative and informational purposes only. Results are estimates and may not reflect actual mortgage terms. Individual results will vary based on lender terms, credit profile, amortization period, and prevailing market conditions. This does not constitute financial, tax, or legal advice. Consult a licensed mortgage professional or qualified financial advisor before making any financial decisions.