Debt-to-Income Ratio Calculator
Calculate housing and total debt as a share of gross income.
Convert income and liabilities to a common monthly period before computing debt ratios.
Result
How to use this calculator
Convert income and liabilities to a common monthly period before computing debt ratios. Enter amounts in the units shown, select the applicable options, and click Calculate. Use Reset to restore the starting values.
Calculation formula
DTI = monthly debt payments / gross monthly income × 100%.
Assumptions and accuracy
Review timing, rates, fees and result notes when comparing scenarios. Future returns and rates are assumptions rather than guaranteed outcomes. Monetary display follows the currency’s precision; intermediate calculations retain additional digits.
Choose what to calculate
Debt to income ratio calculator for a mortgage
Compare monthly debt payments with gross monthly income. A calculated ratio does not establish mortgage eligibility.
Open this calculationUnderstanding this calculation
Calculate debt-to-income ratio by converting income and debt entries to monthly amounts. Housing debt and total debt are reported separately so their contributions remain visible.
Worked examples
Calculate debt-to-income with monthly payments
Illustrative inputs are specified in the steps below; the example link loads the complete settings. Unmentioned settings use the linked defaults.
- The example has 6,000 monthly gross income and 1,500 monthly housing debt, with other entries zero. 1,500 / 6,000 × 100 = 25%.
Total debt-to-income ratio: 25%.
Try these inputsCommon questions
Do I enter loan balances or monthly payments for DTI?
Enter required debt payments at the selected frequency, not the full outstanding loan balances.
Can I mix annual income with monthly debt payments?
Yes, when you select the correct frequency for each entry. An incorrect frequency can change the ratio substantially.
Scope and assumptions
Use consistent gross-income figures and debt payment amounts. The calculation does not set lender-specific qualification thresholds.
Sources
- Calculation methodology, rule versions and testing limitations
- Reference calculator for feature comparison (not a model-parity certification)
Calculation notes checked . Examples are mathematical checks under the stated assumptions.
Calculation methods and formulas
Debt-to-Income Ratio
Convert income and liabilities to a common monthly period before computing debt ratios.
DTI = monthly debt payments / gross monthly income × 100%.
See our calculation methodology and review status for data versions, rounding and validation limitations.