Last updated:
Debt to Income Ratio Calculator
Applying for a mortgage, auto loan, or personal loan? Lenders almost always check your debt-to-income ratio first. DTI tells them whether your monthly payments are manageable relative to what you earn. A quick calculation can show exactly where you stand–and our free tool does the work for you.
What is Debt-to-Income Ratio (DTI)?
DTI is the percentage of your gross monthly income that goes toward recurring debt payments. Lenders split it into two parts:
- Front-end ratio (housing ratio): Only housing costs (mortgage principal, interest, property taxes, insurance, and HOA fees) divided by gross monthly income.
- Back-end ratio: All recurring debts–including housing, credit cards, auto loans, student loans, and any other obligations–divided by gross monthly income.
Most lending decisions focus on the back-end ratio because it paints a complete picture of your financial load.
How to Calculate Your Debt-to-Income Ratio
The formula is straightforward:
(Total monthly debt payments ÷ Gross monthly income) × 100 = DTI percentage.
Suppose you earn $6,000 a month before taxes. You pay $1,500 for your mortgage, $300 on a car loan, and $200 in credit card minimums. Your total monthly debt is $2,000:
(2,000 ÷ 6,000) × 100 = 33.3% back-end DTI.
If you only look at housing, the front-end DTI would be ($1,500 ÷ $6,000) × 100 = 25%.
The calculator above does the heavy lifting. It factors in mortgage or rent, auto loans, credit card minimums, student loans, and any other recurring debt like alimony or child support. Just enter your gross monthly income–the amount before taxes and deductions–and each debt payment to get your DTI in seconds.
What is a Good DTI Ratio?
Lending guidelines have stayed relatively consistent into 2026. A healthy back-end DTI is 36% or lower; many financial experts still reference the 28/36 rule: housing costs below 28% of gross income, total debt under 36%. Here is how typical thresholds look:
- ≤ 36% – Preferred by most conventional lenders. You’re seen as a low-risk borrower with room for additional credit.
- 37% – 43% – Acceptable for many loan types, including FHA and some conventional programs, though you may face closer scrutiny.
- 44% – 50% – Considered high risk. FHA loans may go up to 50% with strong compensating factors (large down payment, high credit score), but conventional approval at this level is rare.
- > 50% – Very difficult to qualify for a mortgage; lenders typically require a co-signer or debt reduction.
Auto loans and personal loans may tolerate higher DTIs depending on the lender and your credit profile, but the same general pattern holds: the lower the ratio, the better your terms.
How to Improve Your Debt-to-Income Ratio
If your DTI is higher than you’d like, focus on two levers: reduce debt or increase income.
- Pay off high-interest debt first. Credit cards often have the highest minimum payments relative to the balance. Eliminating a card can quickly drop your monthly obligations.
- Consolidate or refinance. Rolling multiple debts into one loan can lower your total monthly payment if you secure a lower interest rate or extend the term.
- Avoid new credit. Postpone financing a car or opening new accounts until after your loan closes.
- Boost your gross income. A second job or side income raises the denominator of the DTI fraction and shrinks the ratio without touching debt.
- Add a co-borrower. A joint application can combine a higher income with manageable shared debts, improving your qualifying ratio.
Small changes can have an outsized effect. For example, paying off a $400 monthly debt on a $5,000 income lifts DTI by 8 percentage points–often enough to move from “caution” to “approved.”
This calculator is for informational purposes only and does not constitute financial advice. Loan eligibility depends on each lender’s specific underwriting standards.
Frequently Asked Questions
What exactly counts as monthly debt for DTI?
Recurring liabilities: minimum credit card payments, auto loans, student loans, personal loans, mortgage or rent (if applicable), alimony, child support, and other fixed obligations. Living expenses like utilities, groceries, and insurance are not included.
Does a car lease count toward DTI?
Yes. Monthly lease payments are treated as a recurring debt obligation and must be included in the total debt side of the DTI calculation, just like an auto loan.
Can DTI be too low?
A very low DTI (under 10%) signals strong financial health, but if it comes from avoiding all credit it may mean a thin credit file. Lenders like to see a responsible mix of credit, not necessarily zero debt.
How does DTI affect my credit score?
DTI does not appear on your credit report and does not directly affect your score. However, the actions that lower DTI–paying down debt–improve your credit utilization ratio, which can boost your score.
What DTI do I need for a mortgage in 2026?
Most conventional loans prefer a back-end DTI no higher than 36%, with a front-end housing ratio under 28%. FHA loans may accept back-end ratios up to 43%, and occasionally 50% with strong compensating factors. Jumbo loans are typically stricter, often capping at 43%.
Can I include a co-signer’s income in DTI?
Yes, if you apply jointly, the lender combines both incomes and debts. The co-signer’s income and repayment history can help you qualify for a larger loan or a better rate, provided their own DTI stays within acceptable limits.