Debt-to-Income Ratio: A Useful but Incomplete Measure
Debt-to-income, or DTI, compares recurring debt payments with income. Lenders may use it when evaluating affordability, but definitions vary and it should not be treated as a universal approval rule.
Basic calculation
A common form divides monthly debt payments by monthly gross income and expresses the result as a percentage. Some lenders include housing costs; others distinguish different DTI measures.
What the ratio misses
DTI does not show childcare, food, taxes, medical costs, savings needs or other household expenses. Two households with the same DTI can have very different financial flexibility.
Use local lending standards
Mortgage and consumer-credit rules differ by country and may change. Verify current underwriting definitions with the lender or regulator relevant to your situation.
A practical next step
Write down the one number or fact from this topic that affects your situation—such as a balance, rate, due date, fee, target amount or policy limit. Then verify any jurisdiction-specific rule with an official source before making a decision.