What Your Debt-to-Income Ratio Means and Why It Matters

Your debt-to-income ratio is the percentage of your gross monthly income that goes toward debt payments. Lenders use this number to decide whether to approve you for a mortgage, car loan, credit card, or personal loan. The lower your ratio, the more borrowing power you have — and the better interest rates you are likely to receive.

A ratio of 36% or lower is generally considered acceptable by most lenders. A ratio above 43% makes approval difficult or impossible on most loans. Your ratio sits somewhere between these points based on how much you earn and how much you owe each month.

Understanding your own ratio helps you see how much debt you can realistically take on without overextending yourself. It also shows you what lenders will see when you explore, so you can decide whether to pay down debt before explore or to shop for lenders with different standards.

Key Takeaways

  • Debt-to-income ratio is calculated by dividing your total monthly debt payments by your gross monthly income, then multiplying by 100 to get a percentage.
  • Include only recurring monthly debt payments: mortgage or rent, car loans, student loans, credit card minimums, and personal loans — not utilities or groceries.
  • Use your gross income before taxes, not your take-home pay, because lenders see your income the same way.
  • Most lenders want to see a ratio of 36% or lower, though some will go as high as 43% or 50% depending on the loan type and your credit score.
  • You can improve your ratio by paying down debt, increasing your income, or both.

Step-by-Step Calculation

Start by listing every debt payment you make each month. Write down the amount you pay toward each one — not the balance you owe, but the actual payment you send in each month.

Include these debts: mortgage or rent payment, car loans, student loans, credit card minimum payments, personal loans, medical debt payments, and any other loan with a monthly payment. Do not include utilities, insurance premiums, groceries, or other living expenses — only debts.

Add all these monthly payments together. This is your total monthly debt payment.

Next, find your gross monthly income. This is what you earn before taxes are taken out. If you are paid annually, divide your salary by 12. If you are paid hourly, multiply your hourly rate by the number of hours you work per week, then multiply by 52 weeks and divide by 12. If your income varies month to month, use an average from the past two or three months.

Divide your total monthly debt payments by your gross monthly income. Multiply the result by 100 to convert it to a percentage. That percentage is your debt-to-income ratio.

A Real Example

Say you earn $4,000 per month gross. Your monthly debt payments are: mortgage $1,200, car loan $350, student loan $200, and credit card minimum $100. That totals $1,850 per month in debt payments.

Divide $1,850 by $4,000 to get 0.4625. Multiply by 100 to get 46.25%. Your debt-to-income ratio is 46%.

At 46%, you are above the 43% threshold that most conventional lenders use. You would likely be turned down for a mortgage or another major loan. However, some lenders — particularly those offering FHA mortgages or personal loans — may still work with you, though at a higher interest rate.

What Counts as Debt and What Does Not

Lenders count only recurring monthly obligations. A car payment counts. A one-time car repair does not. A student loan payment counts. Tuition you plan to pay next semester does not.

Credit card debt counts, but only the minimum payment you are required to make each month — not the full balance. If you owe $5,000 on a card but your minimum payment is $150, the lender counts $150, not $5,000.

Rent or a mortgage payment always counts. Child support or alimony counts. Medical debt with a monthly payment plan counts. Utility bills, phone bills, insurance, and groceries do not count, even though they are real expenses you pay every month.

Some lenders also ask about housing costs separately. They calculate a housing ratio — your mortgage or rent payment divided by gross income — and want to see that at 28% or lower. This is stricter than the overall debt-to-income ratio and matters most when you are explore for a mortgage.

How Lenders Use Your Ratio

Different loan types have different standards. Conventional mortgages typically require a ratio of 36% or lower, though some lenders will go to 43%. FHA mortgages allow up to 50%. Auto loans are often approved at ratios above 50% because the car itself serves as collateral. Credit cards and personal loans have looser standards but higher interest rates at higher ratios.

Your credit score also affects the decision. A borrower with a 700 credit score and a 40% ratio may be approved where a borrower with a 620 score and the same ratio is denied. Lenders view the ratio as one piece of the picture, not the whole picture.

If you are denied for a loan, the lender is required to tell you the reason. If it is your debt-to-income ratio, you know what to fix. If it is your credit score, that is a separate issue.

How to Lower Your Ratio

The fastest way to lower your ratio is to pay down debt. Every dollar you pay toward a loan reduces your monthly payment and your ratio. Paying off a credit card entirely removes that minimum payment from the calculation. Paying off a car loan removes that payment too.

You can also increase your income. A raise, a second job, or additional income from a side business increases your gross monthly income and lowers your ratio without changing your debt. If you earn $5,000 instead of $4,000 in the earlier example, your ratio drops from 46% to 37% — below the 43% threshold.

Some people do both: they increase income while paying down the highest-payment debts. This works faster than either strategy alone.

Avoid taking on new debt while you are trying to lower your ratio. A new car loan or credit card will raise your monthly payments and move you in the wrong direction.

Frequently Asked Questions

Do I include my rent payment in my debt-to-income ratio?

Yes. Rent is a monthly obligation and counts toward your ratio. If you own a home with a mortgage, that payment counts too. Some lenders separate housing costs and look at them as a ratio on their own, but rent or mortgage always factors into your overall debt-to-income calculation.

What if I have irregular income or I am self-employed?

Use an average of your income over the past two years if your earnings vary month to month. Self-employed borrowers often need to provide tax returns to prove their income. Some lenders average the past two years of tax returns; others use the most recent year. Ask the lender what documentation they need before you explore.

Does my spouse's income count if we are explore for a loan together?

Yes. When you explore jointly, lenders add both incomes together and both debts together to calculate a combined ratio. If you are explore alone, only your income and your debts count — not your spouse's, even if you are married.

Can I lower my ratio by paying off a credit card balance?

Paying off the balance helps, but only if you also close the account or stop using it. If you pay off a $5,000 balance but keep the card open with a $0 balance, lenders may still count a minimum payment based on the credit limit. Closing the account removes it from the calculation entirely.

What if my debt-to-income ratio is too high to get approved?

You have three options: pay down debt to lower the ratio, increase your income, or wait and reapply later after you have made progress on either front. Some lenders have higher thresholds than others, so you can also shop around — but explore to multiple lenders in a short time can temporarily lower your credit score, so space out applications by at least a few weeks.