Qualifying & Pre-Approval
How Much Mortgage Can I Afford in Canada?
How much mortgage can I afford? Work through income, debts, the stress test, and the real costs of ownership to land on a payment you can genuinely live with.
How much mortgage can I afford? The honest answer starts with your budget, not with the maximum a lender will approve. A lender measures whether you can carry the payments under its rules; you have to decide whether the payment leaves room for savings, repairs, and the rest of your life. This five-step method brings the two together.
Start with your budget, not the bank's maximum
The maximum approval is a risk ceiling, not a spending target. Borrowers who treat it as a target often find themselves house-poor, with little left over each month. Start by deciding what monthly payment you would be comfortable making if your income dipped or rates rose, then work backward to a loan amount.
Having a cushion is not a lack of ambition; it is what lets you absorb a furnace replacement or a job change without panic. The borrowing guide explains the lender's side of the same equation.
One practical way to set the number is to decide what you want left over each month after housing. If you know you need a certain amount for savings, childcare, or debt repayment, subtract it first and see what payment remains. That figure is your true ceiling, regardless of what a lender offers.
Step 1: total your take-home income
Add up the money that reliably arrives each month: net salary, guaranteed bonuses, and any stable rental or part-time income. Use take-home pay for budgeting, because that is what you actually spend. Lenders use gross income, so your two figures will differ, and that is expected.
If your income varies, use a conservative average. It is better to plan around a lower number and be pleasantly surprised than to stretch for a payment that only works in a good month.
Be honest about which income is dependable. A bonus that has appeared for years is different from one that might vanish, and rental income that depends on a single tenant carries risk. When in doubt, leave it out and see whether the numbers still work.
Step 2: list debts and living costs
- Credit card minimums and any balances.
- Car loans or leases.
- Lines of credit and student loans.
- Support payments and fixed obligations.
- Groceries, utilities, insurance, transport, and childcare.
Subtract these from your take-home income to see what is genuinely available for housing. Many buyers discover that the lender's maximum leaves nothing for the categories the lender does not count, such as savings and discretionary spending.
It also helps to separate fixed costs from flexible ones. If money gets tight, you can trim dining out but not a car payment or childcare. Knowing which costs are locked in tells you how much real slack your budget has.
Step 3: apply the ratios and the stress test
Lenders test your housing costs against your gross income using the GDS and TDS ratios, then test the payment again at the higher qualifying rate required by the mortgage stress test. The stress test is what usually reduces the amount you are offered, because the lender has to assume a larger payment.
Run your numbers through the mortgage affordability calculator to see the tested result, then compare it with your own budget from step two. The lower of the two numbers is your realistic ceiling.
Do not be discouraged if the lender's number is higher than yours. That gap is exactly the cushion that protects you, and choosing the lower figure is a deliberate, sensible decision rather than a missed opportunity.
Step 4: add the costs of ownership
A mortgage payment is not the whole cost of a home. Property taxes, heating, insurance, maintenance, and any condo fees all come out of the same budget, and the true cost of home ownership is larger than most first-time buyers expect. Upfront you also face closing costs, which is why the down payment calculator is a useful companion.
| Cost | Recurring or one-time | Why it matters to your budget |
|---|---|---|
| Mortgage payment | Recurring | The largest line, and the one the lender tests |
| Property tax | Recurring | Counted by the lender and by your budget |
| Heating and utilities | Recurring | Part of the housing cost in the ratios |
| Maintenance | Recurring and lumpy | Not in the ratios, but real money |
| Closing costs | One-time | Due before you move in |
Maintenance deserves special attention because it arrives in lumps. A roof, a furnace, or an appliance can cost thousands in a single year, and the bill does not wait for a convenient moment. Setting aside a monthly amount for repairs turns a surprise into a plan.
Step 5: test the payment in real life
Before you commit, live on the new budget for a few months. Set aside the difference between your current housing cost and the projected one, and see whether the rest of your life still works. If the experiment feels tight, the mortgage is probably too large, regardless of what a lender will approve.
One more test is to imagine the first full year of ownership. Add up the mortgage payment, property taxes, heating, insurance, and a maintenance reserve, then compare that total with what you spend on housing today. If the gap is larger than you expected, adjust the price you are shopping for rather than hoping the budget will stretch.
Then stress-test it yourself: what happens if the payment rises at renewal, or if one income pauses for a few months? A payment that survives those questions is one you can genuinely afford. Confirm current rates, taxes, and program rules with your lender and the relevant government sources before you buy.
Frequently asked questions
How much of my income should go to a mortgage?
There is no single right percentage, but lenders typically test housing costs against a share of gross income using the GDS and TDS ratios. Many financial planners suggest keeping total housing costs well below the maximum so you retain room for savings and emergencies. Your comfort matters as much as the ratio.
Should I borrow the maximum I qualify for?
Usually not. The maximum is the most a lender will risk, not the most you can comfortably repay. Leaving a cushion protects you if rates rise at renewal or your income changes. Many buyers deliberately choose a payment below their approval to keep their budget flexible.
What costs should I include besides the mortgage payment?
Include property taxes, heating and utilities, home insurance, maintenance, and any condo fees, plus one-time closing costs such as legal fees and land transfer tax. These are part of the real cost of owning and are easy to underestimate when you focus only on the mortgage.
Does the stress test lower how much I can afford?
It can. The stress test makes the lender use a higher qualifying rate when testing your payment, which raises the housing cost figure and reduces the loan you can carry. Your actual payment is unchanged, but the amount you are approved for may be smaller.