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Affordability Calculator

Affordability calculator: the maximum home price you can afford based on your income, debts and down payment, with the Canadian mortgage stress test.

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Discover the maximum home price you can afford based on your income, debts, and down payment - applying the Canadian mortgage stress test (GDS/TDS).

How does the calculation work?
GDS Gross Debt Service ratio Housing costs (mortgage + taxes + heating) ÷ gross income. Limit: 39%
TDS Total Debt Service ratio GDS + all your other monthly debts ÷ gross income. Limit: 44%
Stress test The calculation uses whichever is higher: contract rate + 2% or 5.25%. This simulates a rate increase to ensure you can still afford payments.
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Estimated Maximum Purchase Price - Estimated monthly payment: -

Qualification Metrics

MetricYour ResultLimit
Stress test rate-max(rate + 2%, 5.25%)
GDS ratio (housing costs)-≤ 39%
TDS ratio (total debt)-≤ 44%
Monthly property tax (est.)-~1% of value/year
Monthly PITH (principal + interest + taxes + heating)-Includes $150/month heating
Gross monthly income-

* Calculation based on the CMHC rules in force. Stress test rate = max(contract rate + 2%, 5.25%). GDS ≤ 39% and TDS ≤ 44% of gross income. Minimum down payment of 5% up to $500,000, 10% on the portion above, 20% from $1,500,000. Heating estimated at $150/month. Property tax estimated at roughly 1% of the property's value per year, since the exact purchase price is not yet known. Consult a mortgage broker for an official pre-approval.

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Where these figures come from

The calculators on this site apply the Quebec rules in force: transfer duty brackets by municipality, CMHC insurance premiums based on the down payment, the legal minimum down payment, the GDS and TDS ratios Canadian lenders use, and the stress test rate. The calculation runs entirely in your browser: no amount you enter is sent anywhere or stored.

What a calculator cannot do

The result is an estimate, not a mortgage pre-approval, not a certified appraisal and not tax advice. A lender decides on your full credit file, your proof of income and the nature of the property. Scales and rates change during the year. Check any figure that matters with your lender, your notary or your accountant before committing. The limits of these tools are set out in the terms of use.

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