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Mortgage Calculator
Debt is the single largest expense in most rental underwriting. Small rate changes move cash flow more than almost any other input.
Results
- Monthly payment
- $3,078
- Annual debt service
- $36,939
- Total interest over term
- $528,157
- Payment at +2% rate
- $3,820
Stress test for renewal risk.
Want the complete analysis?
Valuation, comparables, risk flags, stress tests and your maximum offer — analyzed with AI.
Analyze the property with AIThe formula
Payment = P × r ÷ (1 − (1 + r)⁻ⁿ)
r is the monthly rate and n is the number of monthly payments.
Worked example
- $580,000 mortgage at 4.9% over 30 years.
- Monthly payment is roughly $3,140.
- At 6.4%, the same loan costs about $3,630 — nearly $490 more per month.
- That difference alone can turn positive cash flow negative.
How to read the result
Canadian fixed mortgages are commonly compounded semi-annually; this tool uses simple monthly compounding, so treat the output as an estimate and confirm exact payments with your lender.
Longer amortisation lowers the payment and lifts DSCR, but increases total interest paid.
Always model the renewal. A five-year term on a long hold means the rate is an assumption, not a fixed cost.
Frequently asked
Why does my lender quote a different payment?
Compounding convention, payment frequency, insurance premiums and fees all shift the number. Use this for screening and your lender's figure for decisions.
How much down payment do investment properties need?
Requirements differ by property type, occupancy and lender. Confirm current rules with a mortgage professional before underwriting a specific structure.
A calculator answers one question. PropertyEdge makes the whole decision.
Run the whole property — NOI, valuation, financing, risks, stress tests, your maximum offer and a BUY / NEGOTIATE / PASS verdict, with every assumption labelled.
- Free to start
- No credit card to start
- Every assumption labelled
- Calculations kept separate from AI interpretation
Ontario benchmarks by city
Local prices, rents, property tax and land transfer tax — the inputs this calculator needs.
- See Toronto benchmarks
- See Hamilton benchmarks
- See Mississauga benchmarks
- See Ottawa benchmarks
- See London benchmarks
- See Kitchener-Waterloo benchmarks
- See Burlington benchmarks
- See Oakville benchmarks
- See Brampton benchmarks
- See Niagara benchmarks
- See Guelph benchmarks
Other calculators
- Cap Rate Calculator
- Cash-on-Cash Return Calculator
- DSCR Calculator
- Rental Property Calculator
- ROI Calculator
- Maximum Offer Calculator
PropertyEdge provides analysis and estimates for informational purposes only. It is not investment, tax, legal or appraisal advice, and no return or investment outcome is guaranteed. Estimates are modelled from the assumptions shown and must be verified against leases, inspections, tax bills and municipal records before you make an offer.