Canada Debt-to-Income Ratio Calculator
Calculate a household debt-to-income ratio based on debt balances and annual after-tax income, or Canadian mortgage debt-service ratios based on monthly housing and debt payments.
Your entries stay in your browser. This tool does not store, transmit, or sell the figures you enter.
Use this for a balance-sheet view. It follows the structure of Statistics Canada’s household credit-market debt-to-disposable-income ratio.
Use annual household income after income taxes and other current transfers, as closely as you can estimate it.
Include outstanding mortgage debt, consumer credit and non-mortgage loans. Enter balances, not monthly payments.
Use this for mortgage debt-service ratios. GDS compares housing costs with gross monthly income. TDS adds other monthly debt obligations.
Use household income before income tax and payroll deductions.
If known, use the payment your lender calculates at the applicable qualifying rate.
The calculator counts 50% of condo fees in GDS and TDS, consistent with CMHC guidance.
Enter the monthly amount your lender would count for loans, credit cards, lines of credit and other obligations. Treatment can vary by debt type.
See how this was calculated
Which debt-to-income ratio should you use in Canada?
The phrase “debt-to-income ratio” can describe two different ideas in Canada, so this calculator keeps them separate.
Debt balance vs. income compares total credit-market debt with annual household disposable income. A result of 175% means $1.75 of debt for every $1.00 of annual disposable income.
Mortgage GDS and TDS compare monthly housing and debt obligations with gross monthly household income. These are commonly used in Canadian mortgage assessment.
Debt balance formula
Enter outstanding balances, not monthly payments. Credit-market debt generally includes mortgage debt, consumer credit and non-mortgage loans. This household calculation mirrors the structure of Statistics Canada’s ratio, but the official national series uses aggregate national-accounts data and is not a personal approval test.
Canadian mortgage GDS and TDS formulas
The Financial Consumer Agency of Canada describes housing costs around 39% of gross household income for GDS and total debt load around 44% for TDS. CMHC also uses 39% and 44% as maximum debt-service ratios in its mortgage insurance guidance.
Common mistakes
- Do not enter monthly debt payments in the debt-balance mode. It needs outstanding balances.
- Do not use after-tax income for GDS or TDS. Mortgage debt-service ratios use gross income.
- Do not enter only half of a condo fee. Enter the full fee and the calculator will count 50%.
- Do not treat a ratio at or below a reference level as a guarantee of mortgage approval.
Limitations
This calculator provides estimates for general information. It does not make a lending decision, calculate a maximum mortgage, verify income, or determine how a particular lender will treat every debt. Debt treatment can vary by lender, insurer, loan type and borrower circumstances.
Methodology and sources
- Statistics Canada for the household credit-market debt-to-disposable-income methodology.
- Financial Consumer Agency of Canada for GDS and TDS descriptions and the 39% and 44% reference levels.
- Canada Mortgage and Housing Corporation for GDS/TDS inputs, maximum ratios and treatment of 50% of condo fees.
- Office of the Superintendent of Financial Institutions for the current minimum qualifying rate on uninsured mortgages.
Methodology last reviewed: September 24, 2026.