How this is calculated
Debt-to-income ratio = (monthly debt payments + housing payment) ÷ gross monthly income. Enter the full amount you would pay each month toward the debts a lender would count, plus the proposed housing payment, and divide by your gross income before tax. A result of 0.36 means 36 cents of every gross dollar goes to those obligations.
Worked example
Gross monthly income of $5,000, debt payments of $900, and a proposed housing payment of $1,500 gives (900 + 1500) ÷ 5000 = 0.48, or 48%. Many lenders prefer a ratio at or below 36% for the housing portion and around 43% in total, though limits vary by programme and country.
Why lenders use the ratio
Debt-to-income ratio compares required monthly debt payments with gross monthly income. Lenders may use different definitions and thresholds, and they verify income, credit, assets, and expenses separately.
FAQ
- Should rent be included?
- For a future mortgage estimate, include the proposed housing payment. For an existing personal budget, use the obligations that match the question you are asking.
- Is this a lending decision?
- No. It is an educational estimate and cannot predict approval, pricing, or affordability.