Mortgage Stress Test Calculator · Ontario

Will you pass
Canada's stress
test?

Ontario lenders qualify you at your rate + 2% or 5.25% — whichever is higher. See exactly how much home you can buy.

See How Much Home You Can Afford → Use Calculator ↓

OSFI B-20 · Ontario

Example — contract rate 4.14%

Your contract rate4.14%

OSFI stress buffer

+2.00%

You qualify at

6.14%

Stress test resultPASS ✓

Your stress
test result.

Enter your income, rate, and costs — get your real maximum home price under Ontario rules.

A · Income

Your Annual Gross Income

$90K

$30K$300K

Co-Borrower Annual Income (optional)

$0$300K

B · Mortgage Details

Your Offered Contract Rate

4.14%→ qualifies at 6.1%

1.00%10.00%

Stress rate = max(4.14% + 2.00%, 5.25%)

Amortization Period

25 years

30yr allowed for insured + first-time buyers

Down Payment

$100K

$10K$500K

C · Monthly Housing Costs & Debts

Property Tax / mo

$400

$100$2K

Heating / mo

$150

$50$600

Condo Fees / mo (50% counted)

$0$2K

Other Debts / mo (car, credit, etc.)

$500

$0$5K

Stress Test Rate6.1%= max(4.14% + 2.00%, 5.25%)

Rate + 2% = 6.1% ✓ binding OSFI floor 5.25%

GDS Ratio32.0% / 39%

Pass — housing costs ≤ 39% of income

TDS Ratio38.7% / 44%

Pass — all debts ≤ 44% of income

Max Home Price

$447,141

at 6.1% qualifying rate

Max Mortgage

$347,141

TDS-limited

Monthly Payment

$1,852

at contract rate 4.14%

Stress Test

PASS ✓

You qualify at 6.1%

Based on OSFI B-20 guidelines. GDS ≤ 39%, TDS ≤ 44%. Canadian semi-annual compounding. For illustration only — not financial advice. Consult a licensed mortgage professional.

Ontario Mortgage Rules

What is the
stress test?

Canada's Office of the Superintendent of Financial Institutions (OSFI) requires all federally regulated lenders to qualify borrowers at a higher rate than their actual mortgage.

This protects you from rate increases. If you can afford payments at 6%+, a rise from 4% to 5% won't threaten your home.

GDS — Gross Debt Service

Monthly mortgage + property tax + heating + 50% condo fees must be ≤ 39% of gross monthly income.

TDS — Total Debt Service

All monthly debt payments (mortgage, debts, condo) must be ≤ 44% of gross monthly income. The binding limit for most buyers.

Qualifying Rate

The higher of your offered rate + 2.00%, or the Bank of Canada benchmark of 5.25% — whichever is greater applies to both GDS and TDS tests.

Applies to All Mortgages

The stress test applies to all new mortgages, renewals with a new lender, and refinances — both insured (< 20% down) and uninsured (≥ 20% down).

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