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.

1

Find your maximum mortgage (stress test)

How much will a lender actually approve you for under OSFI's qualifying rules?

2

Factor in your down payment

How much do you have saved, and does it meet the minimum requirements?

3

Budget for CMHC insurance

If your down payment is under 20%, mortgage insurance is mandatory and adds to your total cost.

4

Account for closing costs

Land transfer tax, legal fees, inspections โ€” these are due in cash at closing, on top of your down payment.

5

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 IncomeEstimated 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:

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 PaymentCMHC 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 moreNo 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.

โš ๏ธ Common mistake: Many first-time buyers save exactly enough for their down payment, then are blindsided by closing costs. Always keep your closing cost budget separate from your down payment savings.

Key closing costs to budget for:

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.

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.

The 30% guideline: Keep your total monthly housing costs โ€” mortgage payment, property tax, insurance, and maintenance โ€” below 30% of your monthly net take-home pay (not gross income). This is the threshold most financial planners consider genuinely affordable rather than just technically approved.

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.

Use the Stress Test Calculator โ†’