Debt-to-Income Calculator
Calculate your DTI ratio result in seconds with the free Debt to Income Ratio Calculator. No registration needed.
Monthly figures
DTI ratio
What is a Debt-to-Income Ratio Calculator?
A Debt-to-Income (DTI) Ratio Calculator helps you measure your monthly debt obligations against your gross monthly income. Lenders use this ratio to determine your ability to manage monthly payments and repay loans.
How to calculate DTI manually (the formula)
The DTI formula is: DTI = (Total Monthly Debt Payments / Gross Monthly Income) × 100. Total monthly debt includes housing payments plus other debts like car loans, student loans, and credit card minimums.
Example calculation
Your gross monthly income is $6,000. Your housing payment is $1,500 and other debt payments total $600. DTI = ($1,500 + $600) / $6,000 × 100 = 35%. Front-end (housing only) = $1,500 / $6,000 × 100 = 25%.
Common mistakes
- Using net instead of gross income — Always use your gross (pre-tax) monthly income, not your take-home pay.
- Forgetting occasional debts — Include all recurring monthly obligations, not just the big ones.
- Not recalculating after changes — Your DTI changes when income or debts change. Recalculate regularly, especially before applying for a mortgage.
Frequently asked questions
How do I calculate my debt-to-income ratio?
Divide your total monthly debt payments by your gross monthly income and multiply by 100. DTI = (Total Monthly Debt / Gross Monthly Income) × 100.
What is a good debt-to-income ratio?
Lenders typically prefer a DTI under 36%, with housing costs under 28% of income. Above 43% makes it hard to qualify for a mortgage.
What is the difference between front-end and back-end DTI?
Front-end DTI is housing costs only. Back-end DTI includes all monthly debt payments. Our calculator shows both.
How can I lower my DTI?
Increase your income, pay down existing debt, or avoid taking on new debt. Even small changes can improve your ratio.
Is this calculator free?
Yes, completely free with no sign-up required.