Debt-to-Income Ratio Explained: How to calculate and Improve It

What is Debt-to-Income Ratio?

Debt-to-income ratio, or DTI, is a personal finance measure that compares your total monthly debt payments to your gross monthly income. Lenders use it to gauge your ability to manage monthly payments and repay borrowed money. Expressed as a percentage, it helps lenders determine how much of your income goes toward debt obligations each month.

A key aspect of DTI is that it focuses on debt, not on regular living expenses. Expenses such as utilities, groceries, insurance, and entertainment are not included in the calculation. This distinction is important because DTI is specifically about the portion of income that must go to debt repayment, not your total budget.

• Monthly debt payments included: credit card minimum payments, student loans, car loans, personal loans, and court-ordered payments such as child support or alimony.
• Excluded from DTI: utilities, groceries, insurance premiums, entertainment, and other regular living expenses.
• Rent is not included when you are buying a home, but it may be considered in other contexts.

Sources: Consumer Financial Protection Bureau, Bankrate, JPMorgan Chase, Experian

How to Calculate DTI: Formula

The formula for DTI is straightforward: divide your total monthly debt payments by your gross monthly income, then multiply by 100 to get a percentage. Gross monthly income is the amount you earn before taxes and other deductions.

To ensure an accurate calculation, list all monthly debt payments, sum them, divide by your gross monthly income, and multiply by 100. If your income varies from month to month, use an estimate based on a typical month, slightly lower to be conservative.

1. List your monthly debt payments: include the minimum payments on credit cards, student loans, car loans, personal loans, alimony, or child support.
2. Add up all these debt payments to get your total monthly debt.
3. Determine your gross monthly income, which is your income before taxes and deductions.
4. Divide the total monthly debt by your gross monthly income.
5. Multiply the result by 100 to convert it to a percentage.

Sources: Consumer Financial Protection Bureau, U.S. Bank, JPMorgan Chase

What is a Good DTI for Loan Approval?

Lenders have different thresholds for what they consider an acceptable DTI, depending on the loan type and their own guidelines. Generally, a lower DTI signals less risk to the lender, which can improve your chances of approval and potentially lead to better terms.

The Consumer Financial Protection Bureau suggests that homeowners aim for a DTI of 36% or less, though some lenders allow up to 43% or more. For renters, the recommended DTI is 15-20% or less, with rent not included in the calculation. Wells Fargo provides broad ranges: 35% or less is considered good, 36-49% may require additional eligibility factors, and 50% or more is considered too high and may limit borrowing options.

Mortgage lenders often look at two specific ratios: front-end and back-end. The front-end ratio, or housing ratio, includes housing costs like mortgage payment, property taxes, and insurance, with a common preferred maximum of 28%. The back-end ratio, or total debt ratio, includes all monthly debt payments, including housing, and lenders usually look for a back-end ratio of 36% or less.

• Conventional loans: front-end ratio 28-35%, preferred back-end 36-43%, maximum back-end 50%.
• FHA loans: front-end maximum 31%, preferred back-end 43%, maximum back-end 57%.
• USDA loans: front-end maximum 34%, preferred back-end 41%, maximum back-end 44%.
• VA loans: no front-end maximum, preferred back-end 41%, maximum back-end 65%.

Sources: Consumer Financial Protection Bureau, Bankrate, Experian, Wells Fargo, University of Michigan Credit Union

How to Improve Your DTI

If your DTI is higher than you would like, there are two primary ways to improve it: reduce your debt or increase your income. Paying down existing debt, especially high-balance credit cards and loans, will lower your monthly debt obligations. Avoiding new debt, such as taking on a new car loan or credit card, also helps keep your DTI from rising.

Increasing your income, whether through a higher salary, a side job, or another source of stable income, will also bring your DTI down because the denominator of the ratio grows. These methods are directly supported by financial institutions and credit bureaus as effective ways to improve your DTI.

• Pay down existing debt, focusing on high-interest or high-balance accounts.
• Avoid taking on new debt, such as new credit cards or loans.
• Consider ways to increase your monthly gross income.

Sources: Wells Fargo, Investopedia, University of Michigan Credit Union

How Lenders Use DTI Alongside Other Factors

DTI is a critical factor in loan approval, but lenders do not rely on it alone. They also review your credit history and credit score to get a full picture of your financial reliability. A good credit score combined with a manageable DTI demonstrates that you are likely to repay a loan on time.

Understanding that DTI is part of a broader evaluation can help you focus on both your debt levels and your credit health when preparing to apply for a loan.

Sources: Experian, Wells Fargo