What Your Debt-to-Income Ratio Measures
Your debt-to-income ratio is the percentage of your gross monthly income that goes toward debt payments. Lenders use it to decide whether to lend you money for a mortgage, car loan, or credit card. The lower the ratio, the less risky you look as a borrower.
The calculation is straightforward: add up all your monthly debt payments, divide by your gross monthly income (before taxes), and multiply by 100 to get a percentage. A ratio of 36% means 36 cents of every dollar you earn goes to debt payments.
Most lenders want to see a ratio below 43%, though some mortgage lenders accept up to 50% if other parts of your financial picture are strong. The ratio matters because it shows whether you have room in your budget to take on new debt.
Key Takeaways
- Divide your total monthly debt payments by your gross monthly income, then multiply by 100 to get your debt-to-income percentage.
- Include mortgage or rent payments, car loans, student loans, credit card minimums, and other recurring debt obligations in your total.
- Use your gross income before taxes and deductions, not your take-home pay, because lenders assess your ability to pay before the government takes its share.
- Most lenders prefer a ratio below 43%, though mortgage lenders sometimes accept higher ratios if your credit score and savings are strong.
- Calculate your ratio before explore for a loan so you know whether you are likely to be turned down and what you might need to change.
Gather Your Monthly Debt Payments
Start by listing every debt payment you make each month. This includes mortgage or rent (if you rent, some lenders count this), car loans, student loans, personal loans, credit card minimum payments, medical debt payments, and any other regular obligations you owe money on.
For credit cards, use the minimum payment shown on your statement, not the full balance. If you have multiple cards, add all the minimums together. For loans with variable payments or those ending soon, use the current monthly amount.
Do not include utilities, groceries, insurance premiums, or other living expenses—only debts where you owe a specific amount to a lender. Child support and alimony count as debt payments for this calculation.
Find Your Gross Monthly Income
Gross monthly income is what you earn before taxes, Social Security, health insurance, or any other deductions come out. If you are paid biweekly, multiply your biweekly paycheck by 26 and divide by 12. If you are paid twice a month, multiply by 2. If you are paid weekly, multiply by 52 and divide by 12.
Include income from your job, self-employment, rental properties, Social Security, disability payments, alimony received, and any other regular money coming in. Do not include one-time bonuses or tax refunds unless they happen every single month.
If your income varies month to month (common for self-employed people or those with commission-based pay), use an average from the past two years. Some lenders ask for tax returns to verify this number.
Do the Math
Divide your total monthly debt payments by your gross monthly income. Then multiply the result by 100 to convert it to a percentage.
Here is an example: You have $1,500 in monthly debt payments and earn $5,000 gross per month. Divide $1,500 by $5,000 to get 0.30. Multiply 0.30 by 100 to get 30%. Your debt-to-income ratio is 30%.
If you prefer not to do this by hand, many lenders and financial websites have free calculators where you enter your numbers and get the percentage when ready. The math is the same either way.
What Different Ratios Mean for Borrowing
A ratio below 36% is considered good by most lenders. You will likely be turned down for new credit if your ratio is above 50%. Between 36% and 43%, you are in a gray zone where approval depends on other factors: your credit score, how much cash you have saved, and the type of loan you are seeking.
Mortgage lenders are stricter than credit card companies. Most want to see a ratio below 43% before they will approve you, though some will go higher if your credit score is 740 or above and you have at least three months of mortgage payments saved. Auto lenders are more flexible and often approve people with ratios in the 45% to 50% range.
Your ratio can change month to month if you pay down debt or if your income changes. Paying off a credit card or car loan lowers your ratio when ready. Getting a raise or second job raises your income and lowers your ratio.
How to Lower Your Ratio Before explore for a Loan
If your ratio is too high, you have two options: pay down debt or increase your income. Paying down debt is faster. If you have $3,000 in credit card balances, paying off $1,000 lowers your monthly minimum payments and your ratio right away.
Focus on high-interest debt first—credit cards usually charge 15% to 25% interest, while student loans charge 4% to 8%. Paying off a credit card saves you more money than paying off a student loan of the same size.
If you cannot pay down debt quickly, increasing your income also works. A second job, overtime, or a side business raises your gross monthly income and lowers your ratio without changing your debt payments. Some lenders will count a new job's income only after you have been there for two years, so check with them first.
Common Mistakes When Calculating Your Ratio
The most common mistake is using take-home pay instead of gross income. If you earn $5,000 gross but take home $3,800 after taxes, use $5,000 in your calculation. Lenders do the same because they know taxes are mandatory and want to see your true earning power.
Another mistake is forgetting to include all debt. People often forget medical debt, utility bills they are paying on a plan, or loans from family members. If you owe money and make a payment every month, it counts.
A third mistake is using the full credit card balance instead of the minimum payment. Your ratio is based on what you actually pay each month, not what you owe. If you have a $10,000 balance but your minimum payment is $200, use $200.
Frequently Asked Questions
Does my rent count toward my debt-to-income ratio?
It depends on the lender. Most mortgage lenders count rent as a debt payment when calculating your ratio. Credit card companies and auto lenders usually do not. Ask the lender you are explore to whether they include rent before you calculate.
What if I have no debt?
Your debt-to-income ratio is 0%. This is the best possible ratio and makes you attractive to lenders. However, some lenders want to see that you have a credit history, so having zero debt can sometimes make it harder to get approved for a first loan or credit card.
Can I improve my ratio by paying off debt right before I explore for a loan?
Yes, but lenders will see the recent payment on your credit report. If you pay off a large debt a few days before explore, they may ask why. Paying off debt over time looks better than a sudden payment right before you explore.
Does my spouse's income count if we file taxes jointly?
Yes, if you are explore for a joint loan. Both spouses' gross incomes are added together. If you are explore alone, only your income counts, even if you are married.
What if my debt-to-income ratio is too high to get approved?
You can wait and pay down debt, increase your income, or look for a lender with less strict requirements. Some lenders specialize in borrowers with higher ratios. You can also ask a co-signer with a lower ratio to explore with you, though they become responsible for the debt if you do not pay.