Debt-to-Income Ratio Calculator
DTI = monthly debt payments ÷ gross monthly income × 100
Calculate the ratio of entered monthly debt payments to gross monthly income.
Formula
DTI = monthly debt payments ÷ gross monthly income × 100
Worked example
Monthly debt payments: 1200
Gross monthly income: 4000
With these inputs, the result is 30 %.
How to use this calculator
- Identify the quantity you want to calculate.
- Enter your measurements in the units shown on each field.
- Read the result, which updates as you change the inputs.
- Check the assumptions below before applying the result.
Assumptions and limits
Does not determine loan approval. Lender definitions and requirements vary.
Precision and checking
Results are rounded for display. Use the most accurate measurements available, and avoid rounding your inputs unnecessarily. Extra decimal places in a result do not make an estimate more reliable.
To check a result, substitute the same input values into the formula shown above. Change one value at a time to understand how the quantity responds.
Frequently asked questions
What assumptions does this calculation use?
Does not determine loan approval. Lender definitions and requirements vary.
Are my inputs sent to a server?
No. The calculation runs locally in your browser. The result updates as you edit the inputs.
Sources & references
- How mortgage lenders calculate monthly payments — Consumer Financial Protection Bureau
