How much house can I afford on $100,000 in Ontario in 2026? A city-by-city worked answer

The question gets asked more than any other in the Canadian personal-finance press: how much house can I afford on $100,000 a year? The answer for a single Ontario buyer in 2026 ranges from about $425,000 in higher-tax cities like London to about $511,000 in Ottawa with 20% down, with Toronto landing close to $443,000 at 5% down thanks to its surprisingly low property-tax rate. This post walks through where those numbers come from, the four levers that move them, the cash needed at closing, and how to read the answer when you compare your situation to it.

The starting point: what $100,000 actually buys in housing budget

Canadian lenders apply two debt-service ratios when sizing a mortgage:

• Gross Debt Service (GDS): total housing cost (mortgage principal and interest, property tax, heat, plus half of any condo fees) divided by gross income. Limit: 39%.
• Total Debt Service (TDS): GDS plus all other monthly debt payments. Limit: 44%.

A single buyer earning $100,000 with no other debts is bound by GDS. At 39% of gross monthly income, the total housing budget is:

$100,000 ÷ 12 × 0.39 = $3,250 a month.

That figure is everything housing, not just the mortgage payment. The further down the math goes, the more of that $3,250 is consumed by property tax, heat, and (for condos) maintenance fees, and the less is left for principal and interest. This is why the same $100,000 income buys a noticeably different house across Ontario.

Why Ontario varies so much: the property-tax gap

Residential property-tax rates across Ontario in 2026 are wider than many buyers realize:

The Toronto-versus-Hamilton gap on a $450,000 home is $2,821 a year, or about $235 a month. That $235 comes straight out of the housing budget, and at 2026 mortgage rates it represents about $36,000 in lost mortgage-carrying capacity. Toronto's reputation for being expensive masks the fact that its low mill rate cushions the affordability math at any given income; the higher list price does most of the work in offsetting the lower tax rate.

Worked scenarios: max home price on $100K, by city

Below assumes a single buyer with $100,000 gross income, no other debts, a 2026 best 5-year insured fixed contract rate of 4.09% (qualifying rate 6.09%), and the city's typical heating cost and condo-fee profile. First-time buyer rules apply: 30-year amortization on insured purchases (down payments under 20%) per the 2024 federal reforms; 25-year amortization on uninsured (20%+ down).

Three things worth flagging in the table.

First, the spread between 5% down and 20% down is only about $60,000 in purchase price. The smaller down payment loses you less than $25,000 a year in income equivalence because the 30-year amortization that comes with insured first-time-buyer purchases mostly offsets the higher CMHC-insured loan. The cash you save by putting 5% down (rather than 20% down) is often more useful as a reserve fund than as a larger purchase.

Second, Ottawa edges out Toronto in the table at every down-payment level because the table assumes a Toronto condo and an Ottawa townhouse. The Toronto profile carries roughly $225 a month of qualifying condo fees (half of a $450/month assessment) that the Ottawa profile does not, which more than offsets Toronto's lower mill rate. Compare like-for-like (a Toronto townhouse with no condo fees against an Ottawa townhouse) and Toronto wins by a few thousand dollars. The takeaway is not "Ottawa beats Toronto" but "condo fees matter as much as property tax."

Third, the variance from city to city is smaller than the variance within each city. A turn-key Toronto condo in the financial core costs much more than a comparable unit in Etobicoke or Scarborough. The table picks averages; your actual shortlist will sit somewhere inside the range.

What the math actually looks like (Toronto condo, 5% down)

To make the table concrete, work the Toronto 5%-down scenario all the way through.

Target home price: $443,000. Down payment: 5% = $22,150. Base mortgage: $443,000 − $22,150 = $420,850.

CMHC premium at 95% LTV is 4.00%, plus the 0.20% surcharge on the 30-year amortization, for a total of 4.20%. Premium = $420,850 × 4.20% = $17,676, financed into the mortgage. Total mortgage: $420,850 + $17,676 = $438,526.

The qualifying calculation runs at 6.09% over 30 years:

Payment = $438,526 × (0.005075 × (1.005075)^360) ÷ ((1.005075)^360 − 1) ≈ $2,655 per month.

Add property tax: $443,000 × 0.715% ÷ 12 = $264 per month. Add heat: about $100 per month for a typical Toronto condo. Add half of condo fees, say $225 per month on a $450/month assessment.

Total housing for qualifying purposes: $2,655 + $264 + $100 + $225 = $3,244 per month.

Divide by $100,000 ÷ 12 = $8,333 and the GDS comes out to 38.9%. Just inside the 39% limit. The lender's affordability cap.

The actual payment (the one that hits your bank account every month after closing) is calculated at the contract rate, not the qualifying rate. At 4.09% over 30 years: $438,526 × (0.003408 × (1.003408)^360) ÷ ((1.003408)^360 − 1) ≈ $2,116 per month. With property tax, heat, and full condo fees, you are writing housing cheques of about $2,930 per month post-closing. That is the actual comfort number to plan around, not the $3,244 qualifying ceiling.

Cash at closing on the $443K Toronto condo

This is where most first-time buyers under-budget. The down payment is the largest line but not the only one.

Plus the lender typically wants to see one to three months of housing costs in your account after closing as a reserve. On the same scenario, that is another $3,000 to $9,000 of cash you should arrive at the offer with but not commit to closing.

Two things to flag.

First, the PST on the CMHC premium has to be paid in cash. It cannot be financed into the mortgage even though the premium itself is. The line catches buyers off-guard because the premium itself is invisible at closing. See the CMHC mortgage rules guide for the full PST-trap walkthrough in Ontario, Quebec, and Saskatchewan.

Second, the Toronto MLTT is a second land transfer tax stacked on top of the provincial one. Outside of Toronto, only the Ontario LTT applies, which is why an Ottawa or Hamilton buyer at the same purchase price faces about $4,500 less in closing-day tax. The first-time-buyer rebates ($4,000 provincially, $4,475 municipally in Toronto) take some of the edge off but do not close the gap.

The four levers that move the answer

If the $443K-to-$511K range is below what you need to buy in your target city, four things move the number, in rough order of size.

1. Income. This is the lever with the largest mechanical effect. Every additional $10,000 of qualified gross income adds about $3,250 a year in housing budget, which at 6.09% over 30 years supports an additional $45,000 of mortgage. The catch is that the income has to be lender-qualifying: salary and consistent self-employment count cleanly, bonuses and overtime usually need two years of history to be averaged in, commission income is often discounted.

2. Down payment. Each extra $1,000 of down payment adds $1,000 of buying power one-for-one. The bigger structural effect is moving across the CMHC premium tiers: going from 5% to 10% down drops the premium from 4.00% to 3.10%, which lowers the financed amount and modestly improves the GDS calculation. Going from 10% to 20% down removes CMHC entirely (no premium, no PST, no insured-mortgage caps on amortization) but adds two-year limits on extended amortization in return.

3. Co-borrower. Adding a qualified partner or co-borrower can nearly double effective income. The legal trade-off is real: both borrowers are jointly and severally liable, and unwinding a co-borrower later usually requires re-qualifying. Most lenders treat common-law and married partners as co-applicants by default.

4. Other debts. TDS includes everything: car loans, student loans, credit card minimums, line-of-credit balances. A $400/month car payment reduces your qualifying mortgage by roughly $60,000 at 6.09% over 30 years. Paying off (or closing) consumer debt before applying can move the GDS-versus-TDS binding constraint and unlock five-figure amounts of buying power. This is usually the highest-return change a buyer can make in the 3 to 6 months before applying.

The rate environment (lever 5, in some sense) matters less than people expect because the stress test re-adds 2.00 percentage points back to whatever your contract rate is. A 25-basis-point cut from the Bank of Canada moves your qualifying rate by 25 basis points too, which adds roughly $7,000 to $9,000 of buying power at $100,000 of income. Material but not transformational.

What "I can afford this" actually means

Two definitions are worth keeping separate.

Lender affordability is what the lender will approve, capped at 39% GDS and 44% TDS, calculated at the qualifying rate. This is the number the calculator returns. It is a ceiling, not a target.

Personal affordability is what you can sustain without compromising other goals (retirement contributions, an emergency fund, the rest of your life). Many planners suggest staying at 30 to 35% GDS rather than the lender's 39%, especially with single income or limited reserves. On $100,000 income, that drops the housing budget from $3,250 to $2,500 to $2,917 a month, which in turn drops the affordable home price by $70,000 to $100,000 below the lender's ceiling.

The lender's number is what gets you approved. The lower number is what lets you keep saving for retirement, replacing a furnace, or covering a rate-renewal shock five years from now.

Run your own numbers

Walk this through with your own income, debts, and target city in the CalcNorth mortgage affordability calculator. Then size the actual payment in the mortgage payment calculator, including the amortization options for first-time buyers. The two-calculator combo gives you both the lender's ceiling and the monthly payment you will actually carry.

For the rules that set those numbers, see:

• The Canadian mortgage stress test in 2026 for the qualifying-rate math.
• The CMHC mortgage rules in Canada for 2026 for premiums, the $1.5M cap, and the 30-year first-time-buyer rules.
• The fixed vs variable guide for which side of the rate market to lock in.

Sources

• Statistics Canada and provincial assessment reports, 2025 to 2026, for residential mill rates by city.
• Department of Finance Canada and CMHC, 2024 to 2026 mortgage reforms (1.5M insured cap, 30-year first-time-buyer amortization).
• City of Toronto and Province of Ontario, 2026 land transfer tax rates and first-time buyer rebate values.
• OSFI, 2026 qualifying-rate confirmation.