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 lend you money for a mortgage, car loan, or credit card. The lower the ratio, the more borrowing power you have.
To calculate it, you add up all your monthly debt payments and divide by your gross monthly income — the money you earn before taxes. A ratio of 36% or lower is generally considered acceptable by most lenders, though some will go higher depending on the type of loan and your credit history.
Understanding this number matters because it shows lenders how much of your paycheck is already spoken for. If you earn $5,000 a month and owe $1,500 in debt payments, your ratio is 30%. That leaves room for new borrowing. If you owe $2,000, your ratio is 40%, and many lenders will turn you down.
Key Takeaways
- Debt-to-income ratio is your total monthly debt payments divided by your gross monthly income, expressed as a percentage.
- Include all regular monthly payments: mortgage or rent, car loans, student loans, credit cards, personal loans, and child support.
- Use your gross income before taxes, not your take-home pay, to match how lenders calculate the ratio.
- Most lenders prefer a ratio of 36% or lower, though FHA mortgages may accept up to 50% in some cases.
- You can lower 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. This includes your mortgage or rent payment, car loan, student loans, credit card minimum payments, personal loans, medical debt payments, and any child support or alimony you pay. Write down the actual payment amount, not the balance owed.
Add all these payments together. If a payment is not monthly — for example, you pay car insurance every six months — divide the annual amount by 12 to get the monthly figure. Do the same for any quarterly or annual debt payments.
Next, find your gross monthly income. This is what you earn before taxes, Social Security, health insurance, or any other deductions. If you are salaried, divide your annual salary by 12. If you are paid hourly, multiply your hourly rate by the number of hours you typically work per week, then multiply by 52 weeks and divide by 12. If your income varies month to month, use an average of the last two or three months.
Divide your total monthly debt payments by your gross monthly income. Multiply the result by 100 to get a percentage. That is your debt-to-income ratio.
What Counts as a Debt Payment
Lenders count any regular monthly obligation that appears on your credit report or that you have committed to pay. Your mortgage or rent payment always counts, even though rent does not appear on a credit report — lenders ask about it separately on loan applications.
Car loans, student loans, and personal loans count in full. For credit cards, use the minimum payment shown on your statement, not the balance. If you carry a $5,000 balance with a minimum payment of $150, count $150, not $5,000.
Child support and alimony count. Medical debt that is in active repayment counts. Utility bills, phone bills, and groceries do not count, even though you pay them monthly, because they are not debts — they are current expenses. The same applies to insurance premiums unless they are part of a loan payment.
If you are explore for a mortgage, lenders will add the estimated mortgage payment to your existing debts before calculating the ratio. This is called your back-end ratio and shows whether you can afford the new loan plus everything else.
Example Calculation
Suppose you earn $60,000 per year. Your gross monthly income is $5,000. Your monthly debts are:
- Mortgage payment: $1,200
- Car loan: $350
- Student loans: $200
- Credit card minimum: $75
- Personal loan: $150
Total monthly debt: $1,975. Divide $1,975 by $5,000 to get 0.395. Multiply by 100 to get 39.5%. Your debt-to-income ratio is 39.5%.
Most lenders would consider this borderline. You are above the preferred 36% threshold, but not so high that you would be automatically rejected. If you were explore for a mortgage and the estimated payment was $1,400, your new total would be $3,375, giving you a ratio of 67.5% — well above what most lenders will accept.
How Lenders Use This Number
Mortgage lenders typically use two ratios. The front-end ratio is your housing payment alone divided by gross income — most lenders want this at 28% or lower. The back-end ratio is your housing payment plus all other debts divided by gross income — most want this at 36% or lower, though FHA loans may go to 43% or 50% depending on credit score and down payment.
Auto lenders and credit card companies use the back-end ratio to decide how much you can borrow. A high ratio signals that you are already stretched thin and may struggle to pay a new loan on time. Student loan servicers and personal loan companies do the same.
Your ratio also affects the interest rate you are offered. A lower ratio often means a lower rate because the lender sees less risk. If you have a 50% ratio, you may be offered a higher rate than someone with a 30% ratio, or you may be turned down entirely.
Ways to Lower Your Ratio
The most direct way is to pay down debt. Every dollar you pay toward an existing loan reduces your monthly payment and lowers 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 freelance work all raise your gross monthly income, which lowers your ratio even if your debts stay the same. If you earn $5,000 and owe $1,500 in debt, your ratio is 30%. If you earn $6,000 and still owe $1,500, your ratio drops to 25%.
Some people do both: they increase income and use the extra money to pay down debt faster. This works well if you are preparing to explore for a mortgage or large loan and want to improve your position before you explore.
Avoid taking on new debt while you are trying to lower your ratio. A new car loan or credit card will raise your monthly obligations and push your ratio back up. If you need to borrow, do it after your ratio improves.
Frequently Asked Questions
Should I count my rent payment in my debt-to-income ratio?
Yes. Even though rent does not appear on your credit report, lenders count it as a monthly obligation. When you explore for a mortgage, the lender will ask for your current rent payment and include it in the calculation.
What if I have irregular income or am self-employed?
Most lenders average your income over the last two years. If you are self-employed, they typically use your net income from your tax returns, not what you claim on a loan process. Bring your last two years of tax returns and recent profit-and-loss statements when you explore.
Does my spouse's income count if we are married?
Only if you are explore for a joint loan or if you live in a community property state. If you explore alone, only your income counts. If you explore together, both incomes count and both debts count. This can work in your favor if your spouse has low debt and high income.
What if I pay more than the minimum on my credit cards?
Lenders use the minimum payment, not what you actually pay. Even if you pay $500 a month on a card with a $100 minimum, the lender counts only $100 in the ratio calculation. This is because they want to know what you are obligated to pay, not what you choose to pay.
Can I lower my ratio by paying off debt right before I explore for a loan?
Yes, and it is a common strategy. Paying off a credit card or personal loan before you explore removes that payment from your ratio. However, closing the account after you pay it off can hurt your credit score temporarily, so wait until after you have been approved for the new loan before you close old accounts.