The 5-Step Affordability Framework
True home affordability comes down to five distinct calculations. Work through each one in order to arrive at a realistic budget.
Find your maximum mortgage (stress test)
How much will a lender actually approve you for under OSFI's qualifying rules?
Factor in your down payment
How much do you have saved, and does it meet the minimum requirements?
Budget for CMHC insurance
If your down payment is under 20%, mortgage insurance is mandatory and adds to your total cost.
Account for closing costs
Land transfer tax, legal fees, inspections โ these are due in cash at closing, on top of your down payment.
Plan for ongoing ownership costs
Property tax, insurance, maintenance โ can you comfortably manage these on top of your mortgage?
Step 1 โ Your Maximum Mortgage (The Stress Test)
All buyers using a federally regulated lender must qualify at the higher of 5.25% or their contract rate plus 2%. This stress test effectively reduces your maximum borrowing power by roughly 20% compared to qualifying at the actual offered rate.
As a rough starting point, most Canadians can borrow approximately 4 to 4.5 times their gross household income โ though this varies based on existing debts, the qualifying rate, and amortization period.
| Household Income | Estimated Max Mortgage |
|---|---|
| $80,000 | ~$330,000 โ $370,000 |
| $120,000 | ~$490,000 โ $550,000 |
| $160,000 | ~$650,000 โ $730,000 |
| $200,000 | ~$810,000 โ $910,000 |
| $250,000 | ~$1,000,000 โ $1,100,000 |
Estimates only. Your actual maximum depends on existing debts, amortization, and current qualifying rates.
Step 2 โ Your Down Payment
The minimum down payment in Canada depends on the purchase price:
- Under $500,000: Minimum 5% down
- $500,000 to $999,999: 5% on the first $500,000 + 10% on the remainder
- $1,000,000 and over: Minimum 20% down โ no exceptions
A larger down payment reduces your required mortgage, lowers your monthly payments, and may eliminate the need for CMHC mortgage insurance entirely if you reach 20%.
Step 3 โ CMHC Mortgage Insurance
If your down payment is less than 20%, you are required to purchase mortgage default insurance through CMHC. This premium is added directly to your mortgage balance โ you do not pay it upfront in cash, but you do pay interest on it over the life of the mortgage.
| Down Payment | CMHC Premium |
|---|---|
| 5% โ 9.99% | 4.00% of mortgage amount |
| 10% โ 14.99% | 3.10% of mortgage amount |
| 15% โ 19.99% | 2.80% of mortgage amount |
| 20% or more | No insurance required |
Step 4 โ Closing Costs
Closing costs must be paid in cash at the time of closing โ they cannot be added to your mortgage. Budget for 1.5% to 4% of the purchase price in addition to your down payment.
Key closing costs to budget for:
- Land transfer tax โ varies significantly by province (use our calculator to find your exact amount)
- Legal fees: $1,500 โ $3,000
- Home inspection: $400 โ $700
- Title insurance: $200 โ $400
- Moving costs: $800 โ $3,000+ depending on distance
- Adjustments: Property tax and utility prepayments from the seller
Step 5 โ Ongoing Ownership Costs
Affordability is not just about getting approved โ it is about comfortably managing the ongoing monthly costs of homeownership on top of your mortgage payment.
- Property taxes: Typically 0.5%โ1.5% of assessed value per year. On a $700,000 home in Ontario, expect roughly $5,000โ$8,000 per year.
- Home insurance: $1,200 โ $3,000+ per year depending on the home and location
- Maintenance and repairs: Budget approximately 1% of the home's value annually. A $700,000 home = $7,000/year on average.
- Condo fees (if applicable): $300 โ $800+ per month, depending on the building
- Utilities: Heating, hydro, water โ varies by property size and type
The 30% Rule โ A Practical Guideline
Rather than stretching to the maximum your lender will approve, consider what monthly housing costs you can comfortably sustain while still saving for retirement, maintaining an emergency fund, and living your life.
Find out how much you qualify for
Use our free Mortgage Stress Test Calculator to get your maximum qualifying mortgage โ updated for 2026 OSFI rules.