About this Debt-to-Income Ratio
Lenders look at more than just your credit score; they look at your DTI. This ratio tells them how much of your monthly income is already committed to debt payments. A lower DTI shows you have plenty of room in your budget for a new loan.
Who this calculator is for
- Borrowers preparing for a mortgage, auto loan, or personal loan application.
- Home buyers trying to understand whether their current debt load is limiting approval odds.
- Anyone who wants a simple lender-style read on monthly debt pressure.
When to use it
- Use this calculator before applying for a mortgage so you know whether debt payoff should come first.
- Test how a new car payment or personal loan could affect your future mortgage qualification.
- Pair it with affordability and mortgage tools to move from ratio check to full monthly housing estimate.
How to use this calculator
- Enter your Gross Monthly Income (before taxes).
- Enter your monthly Rent or Mortgage payment.
- Enter minimum monthly payments for Cars, Credit Cards, and Student Loans.
- Your DTI % will appear automatically with a status rating.
Key assumptions
- The ratio uses gross monthly income and scheduled minimum debt payments only.
- This tool calculates a back-end DTI style estimate, not full underwriting or residual income analysis.
- Lender overlays vary, so the status labels are general guidance rather than approval guarantees.
Accuracy and testing
Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.
How this calculator works
Inputs explained
Gross Monthly Income
Your total income before taxes and deductions. Include salary, pension, and side hustles.
Rent / Mortgage
Your current housing cost. Do not include utilities unless they are part of the rent.
Minimum Payments
For credit cards, use the minimum payment due, not the full balance.
Understanding your results
Example scenarios
Qualifying for Mortgage
John earns $5,000/mo. His car ($400), cards ($100), and loans ($200) total $700. He wants a mortgage of $1,200. Total debt = $1,900. DTI = 38%. He likely qualifies.
High DTI
Sarah earns $4,000/mo but has $1,000 in student loans and $800 rent. Total $1,800. DTI = 45%. Lenders may view this as high risk.
Key Features
- Calculates Back-End DTI
- Lender Risk Assessment
- Simple Monthly Input
Things to Keep in Mind
This calculator provides a general assessment. Specific lenders may have different DTI cutoffs (e.g., FHA allows higher DTI than Conventional).
Tips & Best Practices
- Pay off small credit card balances to lower your monthly minimums and improve your DTI quickly.
- Increase your income (side gig, raise) to lower your DTI without paying off debt.
- Avoid taking on new debt (like a car loan) right before applying for a mortgage.
Glossary of Terms
- Front-End Ratio
- The percentage of income going only towards housing costs.
- Back-End Ratio
- The percentage of income going towards all debts combined (what this tool calculates).