Home Affordability Calculator
See the maximum home price you can carry based on your income, debts, and down payment — calculated with Canadian GDS/TDS limits and the federal mortgage stress test.
Maximum home price
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- Max monthly housing budget
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- Stress-test rate
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- Estimated mortgage payment
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- Mortgage amount
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Uses GDS 39% / TDS 44% limits and the federal stress test — you must qualify at the greater of your rate + 2% or 5.25%.
Assumptions & sources
Rates change. Here is exactly what this calculator uses and when each figure was last confirmed.
- Canadian fixed-rate mortgages use semi-annual compounding. i = (1+r/2)^(2/12)-1.Effective January 1, 2026 · Source
- Edmonton residential property tax. annualTax = assessedValue * combined_mill_rate / 1000.Effective January 1, 2026 · Source
- Lender GDS/TDS limits and stress-test rules vary by lender and borrower profile. A pre-approval from a mortgage broker is the only number that actually binds.
Estimates only — for general information, not financial, mortgage, tax, insurance, or legal advice. Confirm all figures with the appropriate licensed professional.
Frequently asked questions
What is the mortgage stress test?+
To qualify for a mortgage in Canada, lenders must confirm you could still afford payments at the higher of your contract rate plus 2% or 5.25%. This calculator sizes your maximum home price using that qualifying rate, so the figure is conservative on purpose.
What are GDS and TDS ratios?+
Gross Debt Service (GDS) caps housing costs — mortgage, property tax, heat, and half of condo fees — at about 39% of gross income. Total Debt Service (TDS) caps those housing costs plus all other debt payments at about 44%. We apply both and use whichever is more restrictive.
Does this guarantee what a lender will approve?+
No. It is an estimate based on GDS/TDS guidelines and the federal stress test. Your actual approval depends on credit score, employment, the lender, and the specific property. Treat the result as a starting budget and confirm with a mortgage professional.