Debt
What Is Debt-to-Income Ratio?
What is debt-to-income ratio
Debt-to-income ratio, or DTI, is the percentage of your gross monthly income that goes toward paying your monthly debt obligations. It compares how much you owe each month against how much you earn, which is why lenders rely on it so heavily: it's a direct measure of your ability to manage new monthly payments, used to assess risk whenever you apply for a mortgage, auto loan, or personal loan.
A high DTI suggests you're stretched thin, with little room in your budget for another payment. A lower DTI suggests the opposite, room to take on new debt responsibly, which is exactly why it factors so directly into loan approval, interest rates, and how much you're able to borrow.
The DTI formula
To find your DTI ratio, divide your total recurring monthly debt payments by your gross monthly income, income before taxes and deductions, then multiply by 100.
DTI Ratio = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100
A worked example
| Monthly Debt Payment | Amount |
|---|---|
| Rent or mortgage | $1,400 |
| Auto loan | $300 |
| Student loan | $200 |
| Credit card minimum payments | $100 |
| Total monthly debt | $2,000 |
DTI = ($2,000 ÷ $5,000) × 100 = 40%
With $5,000 in gross monthly income and $2,000 in total monthly debt payments, this person's DTI ratio is 40%.
What counts as debt, and what doesn't
DTI only counts fixed, recurring debt obligations, not your everyday cost of living. Knowing the difference matters, since mixing the two gives you a misleading number.
Included in debt
- Rent or mortgage payments
- Auto loans
- Student loans
- Minimum credit card payments
- Alimony and child support paid
Excluded, as living expenses
- Utilities (electricity, water, internet)
- Groceries
- Insurance premiums
- Phone bills and streaming subscriptions
Gross monthly income, the other side of the formula, includes salary or hourly wages, bonuses or commissions, self-employment income, rental income, and any alimony or child support you receive, before taxes and other deductions come out.
Front-end vs. back-end DTI
Lenders actually look at two versions of this ratio. Front-end DTI, sometimes called the housing ratio, measures only your housing-related costs, mortgage or rent, property taxes, and homeowner's insurance, divided by your gross monthly income. Back-end DTI is broader: it measures your total recurring monthly debt payments, housing costs plus auto loans, student loans, and credit card minimums, divided by gross monthly income. Back-end DTI is the number lenders check most often, and it's what people usually mean when they refer to "DTI" without qualifying it further.
DTI benchmarks: what's a good ratio
Lenders generally sort DTI into a few tiers, though exact cutoffs vary by lender and loan type.
| DTI Range | Rating | What it means |
|---|---|---|
| Below 36% | Healthy | A strong balance between debt and income; usually qualifies for the best rates and terms |
| 36% to 43% | Acceptable | Still workable for most standard loans, though lenders may add extra scrutiny |
| 43% to 50% | High | Lenders see more risk here; fewer loan options and less favorable terms |
| 50% or higher | Very high | Often too high to qualify for new credit without improving the ratio first |
Many lenders look for a back-end DTI of 36% or lower for the most favorable terms, though mortgage thresholds in particular vary by loan program and credit profile. A high DTI can mean a smaller loan amount, a co-signer requirement, or a longer repayment term; a low DTI supports faster approval and better terms, like lower interest rates or higher borrowing limits.
How to lower your DTI ratio
Pay down existing balances: target high-interest credit cards or small loans to eliminate monthly minimum payments
Increase gross income: a raise, a side hustle, or a new job raises the bottom half of the formula
Avoid new debt: hold off on a new car, credit card, or loan while you're working to improve your ratio
Consider refinancing or consolidation: a lower interest rate or longer term can reduce a monthly payment
Monitor it regularly: recheck your DTI before applying for a loan, not after you've already been declined
Want to see how quickly paying down a balance could move your DTI and get you debt-free? Try the Debt Payoff Calculator to map out a payoff timeline for your current balances.