Wondering how much house you can afford? In Canada, the answer isn't just about your income — it's about passing the mortgage stress test, meeting GDS and TDS ratio requirements, and navigating 2026's lending rules. Let's break down exactly how lenders calculate your maximum purchase price.
Canadian Mortgage Qualifying Ratios (2026)
Lenders use two key ratios to determine how much you can borrow. Both must be satisfied to qualify:
| Ratio | What It Measures | Maximum |
|---|---|---|
| GDS | Gross Debt Service: Housing costs only (mortgage + property tax + heating + 50% condo fees) | 39% |
| TDS | Total Debt Service: All debt (housing + car loans + credit cards + lines of credit + student loans) | 44% |
The Mortgage Stress Test (2026)
You must qualify at the higher of:
If you get 5%, you qualify at 7%
Whichever is higher wins
Example: Getting a mortgage at 5.5%? You'll qualify at 7.5% (5.5% + 2%). Getting one at 3%? You'd still qualify at 5.25%.
Down Payment Requirements (2026)
Minimum 5% down payment required + CMHC insurance
5% on first $500k, 10% on amount above + CMHC insurance (new rule since Dec 2024)
Minimum 20% down payment required (no CMHC insurance available)
Calculate Your Home Affordability
Use our interactive calculator to see how much house you can afford based on your income, down payment, and existing debts. This calculator applies the stress test and GDS/TDS ratios.
Home Affordability Calculator
Calculate how much house you can afford based on your income, down payment, and debts using 2026 Canadian mortgage rules.
Car loans, credit cards, student loans
How it works: Lenders use the stress test (your contract rate + 2% or 5.25%, whichever is higher) to qualify you. Your housing costs can't exceed 39% of income (GDS), and total debt can't exceed 44% (TDS). With less than 20% down, you'll need mortgage default insurance (CMHC).
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Real-World Examples
Let's look at three realistic scenarios to see how affordability works in practice:
Single Income, No Debt, First-Time Buyer
Best case scenario
Scenario:
- •Emma, age 28: Software developer in Toronto
- •Annual income: $100,000
- •Down payment: $50,000 saved in FHSA + savings
- •Monthly debts: $0 (no car, paid off student loans)
- •Interest rate: 5.5%
The Math:
- Gross monthly income:$8,333
- Maximum housing costs (39% GDS):$3,250
- Less: Property tax/heating estimate:-$600
- Available for mortgage:$2,650/month
Result: With no debts, Emma maxes out her GDS ratio. The stress test limits her to about $490K. With 10.2% down, she'll need CMHC insurance (~$17,600 added to mortgage). Total borrowing: ~$458,000.
Dual Income Couple with Some Debt
Moderate debt scenario
Scenario:
- •James & Priya: 32 and 30, buying in Mississauga
- •Combined income: $150,000 ($85k + $65k)
- •Down payment: $80,000
- •Monthly debts: $850 (car loan $450, credit card $200, student loan $200)
- •Interest rate: 5.25%
The Math:
- Gross monthly income:$12,500
- Maximum total debt (44% TDS):$5,500
- Less: Existing monthly debts:-$850
- Less: Property tax/heating estimate:-$750
- Available for mortgage:$3,900/month
- Limited by TDS, not GDS
Result: Their existing debts reduce affordability significantly. They hit the 44% TDS limit before the 39% GDS limit. Paying off the $850/month in debts first would increase their max price by ~$140,000.
High Income with Heavy Debt Load
Debt-constrained scenario
Scenario:
- •Marcus, age 35: Sales executive in Vancouver
- •Annual income: $180,000
- •Down payment: $120,000
- •Monthly debts: $2,400 (car lease $800, line of credit $900, credit cards $700)
- •Interest rate: 5.75%
The Math:
- Gross monthly income:$15,000
- Maximum if no debt (39% GDS):$5,850/mo → ~$1.1M house
- Maximum total debt (44% TDS):$6,600
- Less: Existing monthly debts:-$2,400
- Less: Property tax/heating:-$850
- Available for mortgage:$3,350/month
Result: Despite earning $180k, Marcus can only afford a $720k home due to heavy debt. If he paid off his $2,400/month in debts first, he'd qualify for over $1.1M. This shows debt is more important than income when it comes to affordability.
Key Takeaway from Examples
Your existing monthly debt payments have a massive impact on affordability — often more than your income. Paying off debts before buying can increase your purchasing power by $100,000+ in many cases.
Frequently Asked Questions
Frequently Asked Questions
Q:What is the mortgage stress test in Canada?
A:The mortgage stress test is a financial safeguard that requires you to qualify for a mortgage at a higher interest rate than your actual contract rate. You must qualify at either your contract rate plus 2% OR 5.25%, whichever is higher. For example, if you get a mortgage at 5%, you must prove you can afford payments at 7%. This ensures you can still afford your mortgage if rates rise. The stress test was introduced in 2018 and applies to all new mortgages, not just high-ratio ones.
Q:What is the GDS ratio and what's the maximum allowed?
A:The Gross Debt Service (GDS) ratio measures what percentage of your gross monthly income goes toward housing costs (mortgage principal, interest, property taxes, heating, and 50% of condo fees if applicable). The maximum GDS ratio allowed by most Canadian lenders is 39%. For example, if your gross monthly income is $8,000, your total housing costs should not exceed $3,120 per month. This is one of the two key ratios lenders use to determine how much you can borrow.
Q:What is the TDS ratio and how is it different from GDS?
A:The Total Debt Service (TDS) ratio measures what percentage of your gross monthly income goes toward all debt obligations, including housing costs PLUS car loans, credit cards, lines of credit, student loans, and other debts. The maximum TDS ratio is typically 44%. While GDS only looks at housing costs, TDS includes everything. For example, if your gross monthly income is $8,000, your total debt payments (including housing) should not exceed $3,520. This is why having existing debt reduces how much house you can afford.
Q:How much down payment do I need to buy a house in Canada?
A:The minimum down payment in Canada depends on the purchase price: 5% for homes up to $500,000, 5% on the first $500,000 plus 10% on the portion between $500,000 and $1.5 million (as of December 2024), and 20% on homes over $1.5 million. For example, a $600,000 home requires $25,000 (5% of $500k) + $10,000 (10% of $100k) = $35,000 minimum. However, with less than 20% down, you must pay mortgage default insurance (CMHC, Sagen, or Canada Guaranty), which typically adds 2.8-4% to your mortgage amount. A 20% down payment lets you avoid this insurance.
Q:What are first-time home buyer incentives in Canada?
A:First-time home buyers in Canada can access several benefits: The First Home Savings Account (FHSA) allows you to save up to $40,000 tax-free for a down payment with tax-deductible contributions (learn more at /learn/fhsa-first-home-savings-account). The Home Buyers' Plan lets you withdraw up to $60,000 from your RRSP interest-free (must be repaid over 15 years). Some provinces offer land transfer tax rebates (Ontario rebates up to $4,000). The First-Time Home Buyer Incentive (FTHBI) program was discontinued in March 2024, but replaced by enhanced FHSA rules.
Q:Should I buy the maximum house I can afford?
A:No, absolutely not. Just because a lender approves you for a certain amount doesn't mean you should spend it all. Lenders qualify you at maximum ratios (39% GDS, 44% TDS), but this leaves little room for savings, emergencies, or quality of life. A better rule of thumb: keep your housing costs around 25-30% of gross income instead of the maximum 39%. This gives you breathing room for retirement savings, vacations, home maintenance, and unexpected expenses. Remember, the bank wants to lend you the maximum — but you're the one living with the payments.
Question: What is the mortgage stress test in Canada?
Answer: The mortgage stress test is a financial safeguard that requires you to qualify for a mortgage at a higher interest rate than your actual contract rate. You must qualify at either your contract rate plus 2% OR 5.25%, whichever is higher. For example, if you get a mortgage at 5%, you must prove you can afford payments at 7%. This ensures you can still afford your mortgage if rates rise. The stress test was introduced in 2018 and applies to all new mortgages, not just high-ratio ones.
Question: What is the GDS ratio and what's the maximum allowed?
Answer: The Gross Debt Service (GDS) ratio measures what percentage of your gross monthly income goes toward housing costs (mortgage principal, interest, property taxes, heating, and 50% of condo fees if applicable). The maximum GDS ratio allowed by most Canadian lenders is 39%. For example, if your gross monthly income is $8,000, your total housing costs should not exceed $3,120 per month. This is one of the two key ratios lenders use to determine how much you can borrow.
Question: What is the TDS ratio and how is it different from GDS?
Answer: The Total Debt Service (TDS) ratio measures what percentage of your gross monthly income goes toward all debt obligations, including housing costs PLUS car loans, credit cards, lines of credit, student loans, and other debts. The maximum TDS ratio is typically 44%. While GDS only looks at housing costs, TDS includes everything. For example, if your gross monthly income is $8,000, your total debt payments (including housing) should not exceed $3,520. This is why having existing debt reduces how much house you can afford.
Question: How much down payment do I need to buy a house in Canada?
Answer: The minimum down payment in Canada depends on the purchase price: 5% for homes up to $500,000, 5% on the first $500,000 plus 10% on the portion between $500,000 and $1.5 million (as of December 2024), and 20% on homes over $1.5 million. For example, a $600,000 home requires $25,000 (5% of $500k) + $10,000 (10% of $100k) = $35,000 minimum. However, with less than 20% down, you must pay mortgage default insurance (CMHC, Sagen, or Canada Guaranty), which typically adds 2.8-4% to your mortgage amount. A 20% down payment lets you avoid this insurance.
Question: What are first-time home buyer incentives in Canada?
Answer: First-time home buyers in Canada can access several benefits: The First Home Savings Account (FHSA) allows you to save up to $40,000 tax-free for a down payment with tax-deductible contributions (learn more at /learn/fhsa-first-home-savings-account). The Home Buyers' Plan lets you withdraw up to $60,000 from your RRSP interest-free (must be repaid over 15 years). Some provinces offer land transfer tax rebates (Ontario rebates up to $4,000). The First-Time Home Buyer Incentive (FTHBI) program was discontinued in March 2024, but replaced by enhanced FHSA rules.
Question: Should I buy the maximum house I can afford?
Answer: No, absolutely not. Just because a lender approves you for a certain amount doesn't mean you should spend it all. Lenders qualify you at maximum ratios (39% GDS, 44% TDS), but this leaves little room for savings, emergencies, or quality of life. A better rule of thumb: keep your housing costs around 25-30% of gross income instead of the maximum 39%. This gives you breathing room for retirement savings, vacations, home maintenance, and unexpected expenses. Remember, the bank wants to lend you the maximum — but you're the one living with the payments.
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Related Canadian Money Guides
FHSA Guide
Save up to $40,000 tax-free for your down payment with the First Home Savings Account.
Emergency Fund Guide
Build your safety net before buying — learn how much to save and where to keep it.
Debt Payoff Calculator
Pay off debt before buying to increase your affordability by $100k+.
RRSP vs TFSA
Should you save for a down payment in an RRSP or TFSA? Compare both options.
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