How much house can you afford in Toronto? The lender math explained
Affordability in Toronto is decided by two ratios and one artificial interest rate. Get those three things straight and the result of the calculator above stops being a mystery — and you will know what to change if the number is lower than you hoped.
GDS and TDS: the two ratios every lender uses
Gross Debt Service (GDS) is the share of your gross household income that goes to housing: mortgage principal and interest, property tax, heating, and 50% of condo fees. Total Debt Service (TDS) adds every other monthly obligation — car payments, student loans, lines of credit, and 3% of outstanding credit-card balances. For insured mortgages the maximums are 39% GDS and 44% TDS. For uninsured (20%+ down) files many lenders apply 32% and 40% and use the stricter number when the file is borderline.
The calculator above uses a 32% GDS ratio, a 5.5% qualifying rate and a 25-year amortization, and does not add property tax, condo fees or other debts. That makes it a conservative ceiling on the mortgage side and an optimistic one on the expenses side — a reasonable starting point, not a pre-approval.
The stress test is the number that actually limits you
Since 2018, federally regulated lenders must qualify every borrower at the higher of 5.25% or the contract rate plus 2 percentage points (OSFI Guideline B-20; the same floor applies to insured mortgages through the Department of Finance). With contract rates in the mid-4% range, that means qualifying at roughly 6.5%. The effect is blunt: a household that could carry $850,000 at 4.5% is approved for about $700,000 at the stress-test rate. The test is also why a rate drop of half a point makes a visible difference to buying power — it moves the qualifying rate too.
What different Toronto incomes can typically borrow
- Household income $120,000, no other debt, 20% down: roughly $500,000–$560,000 of mortgage — a one-bedroom-plus-den condo downtown or a two-bedroom in Scarborough or Etobicoke.
- Household income $180,000: roughly $760,000–$840,000 — a two-bedroom condo in Midtown or a townhouse in the 905.
- Household income $250,000: roughly $1.05–$1.17 million — a semi-detached in East York or the Junction, or a detached in Mississauga or Whitby.
These ranges assume a 6.5% qualifying rate, a 30-year amortization where allowed, and typical Toronto property tax. A $600-a-month car payment lowers each by about $100,000; a $400-a-month condo fee lowers it by roughly $35,000.
Down payment changes the ceiling twice
A larger down payment reduces the loan directly, but crossing 20% does more: it removes the mortgage-insurance premium (up to 4% of the loan), lifts the $1.5 million insured price cap, and unlocks a 30-year amortization at any lender. Buyers close to the 20% line — say 17% saved on a $900,000 purchase — are often better off waiting three months than paying a $25,000 premium.
Programs that help first-time buyers in Ontario
- First Home Savings Account (FHSA): $8,000 a year, $40,000 lifetime, tax-deductible going in and tax-free coming out for a first home.
- Home Buyers’ Plan (HBP): withdraw up to $60,000 from an RRSP per person ($120,000 per couple), repaid over 15 years.
- Land transfer tax rebates: up to $4,000 provincial and, inside Toronto, up to $4,475 municipal — about $8,475 back on closing.
- First-time buyers purchasing with less than 20% down can take a 30-year insured amortization (since December 15, 2024).
Get pre-approved before you look
A written pre-approval locks a rate for 90 to 120 days, applies the stress test to your real file, and tells a seller your offer will close. In Toronto, where multiple-offer situations are common in the freehold market, an unconditional-on-financing offer is often the difference between winning and losing — and you can only make one if the pre-approval work is done.
Rules cited: OSFI Guideline B-20; Department of Finance insured-mortgage rules (GDS/TDS caps, $1.5M cap, 30-year amortization for first-time buyers, effective December 15, 2024); CRA FHSA and HBP limits (2025); Ontario Ministry of Finance and City of Toronto land transfer tax refunds. Illustrative — confirm with a licensed mortgage professional.