Calculators
The same math the underwriter runs
Canadian fixed mortgages compound semi-annually — an American calculator overstates your payment. These two tools use the real rules: CMHC premium tiers, the stress test, and GDS/TDS limits. Every result is an estimate, not an approval.
Calculator 01
Payment & CMHC calculator
Your estimate
- Monthly payment
- —
- Accelerated bi-weekly
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- Stress-test payment
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- Qualifying rate used
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| Base mortgage | — |
|---|---|
| Loan-to-value | — |
| Default-insurance premium | — |
| Total mortgage | — |
| PST on premium (Ontario, cash at closing) | — |
| Interest over a 5-yr term | — |
| Balance after 5 years | — |
Assumptions this calculator makes (read them — they matter)
- Fixed-rate compounding is semi-annual, not in advance — the Canadian legal standard. Monthly rate = (1 + r/2)1/6 − 1.
- Default-insurance premium tiers (standard homeowner): 2.80% (15–19.99% down), 3.10% (10–14.99%), 4.00% (5–9.99%); 0.60–2.40% below 80% LTV where insurance is still chosen. Premium is added to the mortgage. A 30-year insured amortization adds 0.20%.
- Minimum down payment: 5% of the first $500,000 + 10% of the rest; homes of $1.5M+ require 20% and cannot be default-insured.
- Stress test: qualification at the higher of contract rate + 2% or 5.25% (federally regulated lenders).
- Accelerated bi-weekly = half the monthly payment every two weeks (26 payments — one extra month per year against principal).
- All rates illustrative as of July 2026. Property tax, condo fees, and utilities are not included in the payment shown.
Calculator 02
Affordability calculator
Works backwards from the two ratios lenders enforce — housing costs within 39% of gross income (GDS) and all debt within 44% (TDS) — both tested at the stress-test rate, not your contract rate.
What the ratios allow
- Maximum purchase price (estimate)
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- Mortgage at that price
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- Monthly payment at your rate
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- Qualifying rate used
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- Binding constraint
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Assumes $150/month for heat (lender standard), the CMHC premium added to the mortgage when your down payment is under 20%, and the minimum-down-payment rules. Estimate only — lender policies differ, and provincially regulated credit unions may qualify differently.
Before you anchor on a number
What the maximum is for
The max is a ceiling, not a target
The ratios don't know about daycare, or that your car dies in two years. Most of our clients buy comfortably below their qualifying maximum — on purpose.
Rates on this page are defaults
Type in any quote you've been given — ours, a bank's, an online lender's. The math doesn't care whose logo is on the rate.
A pre-approval beats a calculator
A calculator can't see your credit file or your employer's letterhead. When you're within six months of buying, get the real number in writing with a rate hold.
Like the numbers? Make them official.
The pre-approval wizard takes about three minutes and ends with a document checklist and next steps — simulated here, no data leaves the page.