Mortgage Stress Test Calculator Ontario

The mortgage stress test in Ontario is a requirement for all mortgage applications. It ensures your mortgage payments remain affordable even if interest rates rise or your income decreases. This calculator helps you determine if your mortgage meets the stress test requirements before applying.

What is a mortgage stress test?

The mortgage stress test is a financial assessment that determines whether your mortgage payments will remain affordable under adverse economic conditions. In Ontario, the stress test compares your mortgage payments to a percentage of your gross income after accounting for other financial obligations.

Key Points

The stress test typically requires that your mortgage payments not exceed 28% of your gross income and that your total debt payments (including mortgage, credit cards, etc.) not exceed 36% of your gross income.

Why is the stress test important?

The stress test helps lenders assess your ability to handle financial challenges without defaulting on your mortgage. It's particularly important in Ontario where interest rates can fluctuate significantly. Failing the stress test may result in a lower mortgage approval or higher interest rates.

Stress test scenarios

The stress test evaluates two scenarios:

Interest rate increase scenario: Assumes your interest rate increases by 2 percentage points.
Income decrease scenario: Assumes your income decreases by 20%.

How to use this calculator

This calculator helps you determine if your mortgage application will pass the Ontario stress test. Enter your current mortgage details and financial information to see if you meet the requirements.

Input fields explained

Current mortgage amount: The total amount you're borrowing.
Current interest rate: Your mortgage's current annual interest rate.
Amortization period: The length of time to repay your mortgage.
Annual income: Your total gross income before taxes.
Monthly debt payments: Total of all your monthly debt obligations excluding the mortgage.

How to interpret results

The calculator will show you whether you pass or fail the stress test for both scenarios. A passing result means your mortgage payments will remain affordable under adverse conditions.

Formula used

Stress Test Calculation

The stress test compares your mortgage payments to income thresholds:

Calculate your current monthly mortgage payment.
Calculate the stress test payment for both scenarios:
- Interest rate increase: Current rate + 2%
- Income decrease: (Current income × 0.8) / 12
Check if:
- Stress test payment ≤ 28% of gross income
- Total debt payments (stress test + other debts) ≤ 36% of gross income

Worked example

Let's calculate a stress test for a mortgage of $300,000 at 5% interest over 25 years with $80,000 annual income and $500 in other monthly debt payments.

Current monthly payment

Using the mortgage payment formula: P = L[i(1+i)^n]/[(1+i)^n-1]

P = $300,000[0.004167(1.004167)^300]/[(1.004167)^300-1] ≈ $1,625.50

Stress test scenarios

Interest rate increase: 7% interest
New payment ≈ $1,750.25

28% of income: ($80,000/12) × 0.28 ≈ $2000

Total debt: $1,750.25 + $500 = $2,250.25 ≤ $2,000 → Fail
Income decrease: 80% of $80,000 = $64,000
New payment ≈ $1,625.50

28% of new income: ($64,000/12) × 0.28 ≈ $1,533.33

Total debt: $1,625.50 + $500 = $2,125.50 ≤ $1,533.33 → Fail

This example fails both stress test scenarios, indicating the borrower may need to adjust their mortgage or financial situation.

Frequently Asked Questions

What happens if I fail the mortgage stress test?

If you fail the stress test, your lender may require you to make larger down payments, choose a shorter amortization period, or improve your debt-to-income ratio before approving your mortgage.

Is the stress test the same for all provinces?

No, stress test requirements vary by province. Ontario's stress test is more stringent than in other provinces, requiring both interest rate increase and income decrease scenarios to be evaluated.

Can I get a mortgage if I fail the stress test?

Yes, but you may need to demonstrate alternative financial arrangements or improve your financial situation to meet the stress test requirements.

How often do I need to recheck the stress test?

You should recheck the stress test whenever your financial situation changes significantly, such as a change in income or interest rates.