🍁 Finance
Canada Home Affordability Calculator — Free 2026
Find out how much home you can afford in Canada using the official mortgage stress test, GDS and TDS ratios, CMHC insurance rules, and Canadian semi-annual compounding. Updated for 2026 with the current 5.25% stress test floor.
Combined income if buying with a co-applicant
Car loans, credit cards, student loans
5-year fixed rate is typically quoted
Toronto ~0.66%, Vancouver ~0.27%, Ottawa ~1.1%
Gas/electric — lenders typically use $100–$200
50% of condo fees is included in GDS ratio
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Max Affordable Home Price
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Max Mortgage
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CMHC Premium
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Monthly Payment (contract rate)
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Qualifying (Stress Test) Rate
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Down Payment %
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GDS Ratio
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TDS Ratio
How It Works
Canadian mortgage qualifying uses the stress test rate (contract rate +2% or 5.25%, whichever is higher), the GDS ratio (housing costs ≤ 39% of gross income), and the TDS ratio (all debt ≤ 44% of gross income). CMHC mortgage insurance is required when the down payment is below 20% and is added to the loan amount.
- Calculate the stress test rate — OSFI requires qualification at max(contract rate + 2%, 5.25%). On a 4.5% contract rate, you qualify at 6.5%.
- Find the maximum GDS payment — Housing costs (mortgage, property tax, heating, 50% condo fees) cannot exceed 39% of gross monthly income.
- Apply the TDS limit — Adding all other monthly debts, total debt service cannot exceed 44% of gross monthly income. The binding constraint limits your maximum price.
- Add CMHC if needed — For down payments below 20%, the CMHC premium (2.8%–4.0%) is added to the loan amount. The calculator accounts for this in the maximum qualifying amount.
Understanding Canadian Mortgage Qualifying Rules (2026)
Buying a home in Canada involves a set of rules specifically designed to ensure borrowers can afford their mortgage if interest rates rise. The most important of these is the mortgage stress test, introduced by OSFI (Office of the Superintendent of Financial Institutions) in its B-20 guidelines.
The Mortgage Stress Test (2026)
The stress test requires lenders to qualify you at the higher of your contract rate plus 2 percentage points, or 5.25% — whichever is greater. At a contract rate of 4.5%, the qualifying rate is 6.5%. At a contract rate of 3.5%, the qualifying rate is still 5.25%. This minimum floor has been in place since June 2021 and remains unchanged in 2026.
GDS and TDS Ratios Explained
| Ratio | Components | Maximum |
|---|---|---|
| GDS (Gross Debt Service) | Mortgage P&I + property tax + heating + 50% condo fees | 39% |
| TDS (Total Debt Service) | GDS + all other monthly debt payments (car, credit card, student loan) | 44% |
CMHC Mortgage Insurance Premiums
| Down Payment | CMHC Premium (% of loan) | Example on $500K Home |
|---|---|---|
| 5% – 9.99% | 4.00% | $19,000 on $475K loan |
| 10% – 14.99% | 3.10% | $13,950 on $450K loan |
| 15% – 19.99% | 2.80% | $11,900 on $425K loan |
| 20%+ | None | $0 |
Property Tax Rates by City (2026)
| City | Approx. Rate | Annual Tax on $700K Home |
|---|---|---|
| Vancouver | 0.27% | ~$1,890 |
| Toronto | 0.67% | ~$4,690 |
| Calgary | 0.65% | ~$4,550 |
| Ottawa | 1.12% | ~$7,840 |
| Montreal | 0.89% | ~$6,230 |
For informational purposes only. Actual mortgage qualifying depends on your credit score, employment type, property type, and individual lender policies. Consult a licensed mortgage broker before making purchase decisions.
Sources: OSFI B-20 Guidelines · CMHC Mortgage Insurance · BMO Stress Test Guide
Frequently Asked Questions
What is the Canadian mortgage stress test?
The mortgage stress test requires lenders to qualify you at the higher of your contract rate plus 2%, or 5.25% — whichever is greater. For example, if your contract rate is 4.5%, you must qualify at 6.5%. This ensures you can still afford payments if rates rise.
What are GDS and TDS ratios in Canada?
The Gross Debt Service (GDS) ratio is your monthly housing costs (mortgage, property tax, heating, 50% of condo fees) divided by gross monthly income, with a maximum of 39%. The Total Debt Service (TDS) ratio adds all other debt payments and the maximum is 44%.
How does CMHC insurance work in Canada?
CMHC mortgage loan insurance is required when your down payment is less than 20%. The premium is 4.0% (5-9.99% down), 3.10% (10-14.99% down), or 2.80% (15-19.99% down). It is added to your mortgage principal, not paid upfront. Insured mortgages are capped at $1.5 million.
What is the minimum down payment in Canada?
The minimum down payment is 5% on homes up to $500,000, 5% on the first $500,000 plus 10% on the remainder for homes between $500,000 and $999,999, and 20% on homes priced at $1 million or more.
Can two incomes be used for Canadian mortgage qualifying?
Yes. If buying with a co-applicant, enter your combined gross household income. Both incomes are used to calculate GDS and TDS ratios, and both applicants' credit and debt histories are reviewed by the lender.
What is semi-annual compounding for Canadian mortgages?
Under the Canadian Interest Act, fixed-rate mortgage rates are compounded semi-annually (twice per year) rather than monthly. This means the effective monthly rate is slightly lower than the stated rate divided by 12. This calculator applies the correct Canadian mortgage math.
How much should I have for closing costs in Canada?
Budget 1.5–4% of the purchase price for closing costs, which include land transfer tax, legal fees ($1,500–$2,500), title insurance ($200–$400), home inspection ($400–$600), and adjustments. Ontario and BC first-time buyers receive land transfer tax rebates.
Does the stress test apply to mortgage renewals?
Since November 2024, uninsured mortgages (20%+ down) switching lenders at renewal are no longer required to requalify under the stress test. Insured mortgages (under 20% down) still require stress testing when switching lenders at renewal.
What amortization period can I get in Canada?
Insured mortgages allow up to 30 years amortization for first-time buyers purchasing new construction (expanded in 2024). Other insured mortgages are limited to 25 years. Uninsured mortgages (20%+ down) can be amortized up to 30 years at most lenders.
How accurate is this home affordability calculator?
This calculator applies the official OSFI B-20 stress test formula, correct GDS and TDS ratios (39% and 44%), Canadian semi-annual mortgage compounding, and current CMHC insurance tiers. It provides a reliable estimate but your actual qualifying amount may vary based on credit score, employment type, and lender policies.
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