What Is Debt-to-Income Ratio? How to Calculate and Lower Your DTI
Learn what debt-to-income ratio means, how to calculate your DTI, what lenders consider a good range, and practical ways to lower it.
Key lesson
Your debt-to-income ratio compares required monthly debt payments with gross monthly income. It does not tell your whole financial story, but it helps you and potential lenders see how much room is left before adding another payment.
What Is a Debt-to-Income Ratio?
Your debt-to-income ratio, usually shortened to DTI, is the percentage of your gross monthly income that goes toward required debt payments. Gross income means income before taxes, insurance premiums, retirement contributions, and other deductions. The Consumer Financial Protection Bureau explains that lenders use DTI as one way to judge whether a borrower can manage the monthly payments on new credit.
DTI is different from a credit score. A credit score is based largely on information in your credit reports, such as payment history and credit use. DTI compares current payments with income, and income generally does not appear on a credit report. Someone can have a strong credit score but a high DTI after taking on several large loans. Another person can have a modest score but a manageable DTI. Lenders may consider both, along with savings, employment, loan type, and other details.
How to Calculate Your DTI
First, add the debt payments you must make in a typical month. Then divide that total by your gross monthly income and multiply by 100. The formula is: monthly debt payments ÷ gross monthly income × 100 = DTI percentage.
What Counts as Debt and Income?
Typical DTI calculations include housing payments, auto and student loans, personal loans, court-ordered obligations, and the minimum payments shown on revolving accounts. Everyday expenses such as groceries, utilities, phone service, transportation, and subscriptions usually are not part of the formula, even though they still matter to your real-life budget. Credit card purchases do not count individually; the required monthly payment does.
Income can include regular wages, salary, and other stable income a lender is permitted to consider and can document. If your income changes from month to month, use a careful monthly average for your own planning. A lender may calculate qualifying income under more specific rules, so your estimate and the lender's final number may differ.
What Is a Good Debt-to-Income Ratio?
There is no universal cutoff that applies to every lender or loan. Requirements depend on the product, the lender, and the rest of the application. As a personal financial-health measure, a lower DTI generally creates more flexibility. It can leave more room for saving, variable expenses, and unexpected bills instead of committing most of your income before the month begins.
A practical way to interpret your result:
- Below 36% often indicates that debt payments take a manageable share of gross income, although approval is never guaranteed.
- From 36% to 43% may still be workable, but a new payment deserves careful stress-testing against your complete budget.
- Above 43% can narrow borrowing options and may signal that debt reduction should come before another major obligation.
- Any ratio can feel unaffordable if rent, childcare, healthcare, or other costs consume the income left after debt payments.
How Lenders Use DTI
A lender may use DTI to estimate whether your income can support a proposed payment in addition to your existing obligations. Mortgage underwriting sometimes distinguishes between a housing ratio and a total DTI. The housing ratio looks only at the expected housing payment relative to income. Total DTI adds other required debts. Different loan programs can define and evaluate these figures differently.
How to Lower Your DTI
Because the formula has only two sides, you can lower DTI by reducing required payments, increasing reliable gross income, or doing both. Begin with accurate numbers rather than an aggressive target. Pull statements, list every required payment, and identify the debts you can realistically change.
Useful next steps include:
- Pay down a balance enough to eliminate one required monthly payment, while keeping an emergency cushion.
- Direct extra money toward high-interest debt so less of each future payment is lost to interest.
- Avoid financing a new purchase while preparing for an important loan application.
- Ask a creditor about hardship or repayment options if payments are becoming unmanageable; understand any fees and long-term cost before agreeing.
- Increase stable income through additional hours, a raise, or recurring side work, and keep records a future lender may request.
- Recalculate monthly so progress is visible and your plan can adapt when income or minimum payments change.
Do not lower a payment merely by stretching a balance over many more years without comparing the total interest cost. A smaller payment can improve the ratio while making the debt more expensive overall. DTI is a useful dashboard metric, not a goal to optimize at any price. Pair it with cash flow, emergency savings, interest rates, and your long-term priorities.