Debt-to-income ratio
Debt-to-income ratio: use monthly debt payments, gross monthly income. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
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Formula & explanation
DTI = monthly debt / gross monthly income × 100
Variables & units
- Monthly debt payments
- currency · minimum 0, maximum 1000000000000
- Gross monthly income
- currency · minimum 0.01, maximum 1000000000000
Worked example
1,200 debt payments and 4,000 gross monthly income gives 30%.
Assumptions
Use gross income consistently. Lender definitions and approval thresholds vary; this is not a borrowing decision.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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