Ontario Mortgage Stress Test Calculator

The Ontario Mortgage Stress Test is a requirement for mortgage applicants in Ontario, Canada. It ensures that borrowers can afford their mortgage payments even if interest rates rise. This calculator helps you determine your maximum borrowing amount based on your income and expenses.

What is the Ontario Mortgage Stress Test?

The Ontario Mortgage Stress Test is a financial assessment that mortgage lenders use to determine if a borrower can afford a mortgage. The test calculates your maximum borrowing amount based on your income and expenses, assuming interest rates rise by 2 percentage points.

This test was introduced by the Ontario government to protect borrowers from becoming underwater on their mortgages during economic downturns. It applies to all mortgage applications in Ontario, including conventional and insured mortgages.

Note: The Ontario Mortgage Stress Test is different from the national stress test introduced in 2022. The Ontario version has stricter requirements and is designed to protect borrowers in the province's specific economic conditions.

How to Use This Calculator

To use this calculator, you'll need to provide the following information:

Your total annual income
Your total monthly expenses (excluding mortgage payments)
Your current mortgage interest rate
Your desired mortgage term in years

The calculator will then determine your maximum borrowing amount based on the Ontario Mortgage Stress Test requirements.

Formula Used

The Ontario Mortgage Stress Test uses the following formula to calculate your maximum borrowing amount:

Maximum Borrowing Amount = (Annual Income - (Monthly Expenses × 12)) × 2.5 × (1 - (1 + (Current Interest Rate + 2%)/12)^(-Term in Months)) / ((Current Interest Rate + 2%)/12)

Where:

Annual Income = Your total annual income
Monthly Expenses = Your total monthly expenses (excluding mortgage payments)
Current Interest Rate = Your current mortgage interest rate (in decimal form)
Term in Months = Your desired mortgage term in months

Worked Example

Let's say you have the following financial information:

Annual Income: $60,000
Monthly Expenses: $1,500
Current Interest Rate: 5%
Mortgage Term: 25 years

Using the formula:

Maximum Borrowing Amount = ($60,000 - ($1,500 × 12)) × 2.5 × (1 - (1 + (0.05 + 0.02)/12)^(-300)) / ((0.05 + 0.02)/12)

= ($60,000 - $18,000) × 2.5 × (1 - (1 + 0.07/12)^(-300)) / (0.07/12)

= $42,000 × 2.5 × (1 - 0.935) / 0.005833

= $42,000 × 2.5 × 0.065 / 0.005833

= $42,000 × 0.1625 / 0.005833

= $42,000 × 27.86

= $1,171,520

Therefore, your maximum borrowing amount would be approximately $1,171,520.

Frequently Asked Questions

What is the purpose of the Ontario Mortgage Stress Test?

The Ontario Mortgage Stress Test ensures that borrowers can afford their mortgage payments even if interest rates rise. It helps protect borrowers from becoming underwater on their mortgages during economic downturns.

How does the Ontario Mortgage Stress Test differ from the national stress test?

The Ontario Mortgage Stress Test has stricter requirements than the national stress test. It is designed to protect borrowers in Ontario's specific economic conditions and applies to all mortgage applications in the province.

What information do I need to use this calculator?

You'll need your total annual income, total monthly expenses (excluding mortgage payments), current mortgage interest rate, and desired mortgage term in years.

Is the Ontario Mortgage Stress Test mandatory for all mortgage applicants?

Yes, the Ontario Mortgage Stress Test is mandatory for all mortgage applications in Ontario, including conventional and insured mortgages.

Can I use this calculator for a refinancing application?

Yes, you can use this calculator to estimate your maximum borrowing amount for a refinancing application. However, the actual approval will depend on your specific financial situation and the lender's assessment.