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For informational purposes only. Not financial, legal, or professional advice. Consult a licensed mortgage professional before making decisions. See full disclaimer

FAQ Library
Purchasing•Verified 2026-02-18

How will lenders evaluate my debt service ratios, and what key factors are considered?

Lenders assess your ability to repay the mortgage by calculating your Gross Debt Service (GDS) and Total Debt Service (TDS) ratios.

Key Points

  • Your debt payments can't be more than 39% of your gross income for housing costs, and 44% for total debt.

  • When lenders check if you can afford your mortgage, they'll use either your mortgage interest rate plus 2%, or 5.25%, whichever is higher.

  • If you're self-employed, you can still get mortgage insurance if you can prove your income with proper documentation.

  • You'll generally need a credit score of at least 600 to qualify, but there are other ways to prove you can handle a mortgage if you don't have a credit history.

  • Lenders must follow careful lending practices to ensure they are managing risk responsibly when approving your mortgage.

Need a Deeper Breakdown?

Read the full research guide this FAQ was derived from for more context and strategy.

Technical Research Verification

Our systems synchronized 4 data points and regulatory frameworks to verify this technical brief.

Read the deeper guide · Purchasing

2026 Insured Mortgage Advantage: 5% Down Payment, Three Insurers & Best Rates Explained

Related Questions

How does mortgage insurance enable lower down payments?

Mortgage insurance lowers the risk for lenders, allowing them to offer mortgages to borrowers with down payments between 5% and 20%.

What property considerations impact my mortgage application?

Lenders carefully assess the property's value and characteristics, directly influencing the loan amount you can secure.

How does the 'straight switch' exemption benefit you at renewal?

The 'straight switch' exemption lets uninsured mortgage borrowers move their mortgage to a new federally regulated lender (FRFI) at renewal without needing to pass the Minimum Qualifying Rate (MQR) .

What are Loan-to-Income (LTI) limits and how will they affect institutional mortgage portfolios?

OSFI is introducing Loan-to-Income (LTI) limits to reduce risks from high household debt in institutional mortgage portfolios .

Analyze Your Scenario

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Today’s Lowest Mortgage Rates

5-Year Fixed
Lender 1
4.14%
3-Year Fixed
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3.94%
5-Year Variable
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3.49%
Prime Rate
Bank of Canada
4.45%

Let's consider Mark's scenario:

Housing CostMonthly Amount
Mortgage Payment$2,000
Property Taxes$300
Heating$100
Housing Total (PITH)$2,400
Car Loan$500
Total Debts$2,900
Gross Income$6,000

Result: GDS = 40% (housing) · TDS = 48.33% (all debt)

Maximum thresholds: GDS ≤ 39%, TDS ≤ 44%

Mark's ratios exceed the typical maximums, which means he may need to reduce debt, increase income, or adjust his home price target to qualify.