What a 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 this number to decide whether to approve you for a mortgage, car loan, credit card, or personal loan. The lower your 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% or lower is generally considered acceptable by most lenders, though some will go higher for mortgages and some will require lower for other loans.
This ratio matters because it shows a lender 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%—meaning 30% of your income is committed to existing debts before you pay for food, rent, utilities, or anything else.
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 all recurring monthly debt: credit card minimums, car loans, student loans, personal loans, and mortgage or rent (some lenders count rent, some do not).
- Use your gross income before taxes and deductions, not your take-home pay.
- Most lenders want to see a ratio of 36% or lower, though mortgage lenders sometimes accept up to 43%.
- Your ratio changes when you pay down debt or when your income changes, so recalculate before explore for new credit.
Gather Your Monthly Debt Payments
Start by listing every debt payment you make each month. This includes credit card minimum payments (not the full balance, just the monthly minimum), car loans, student loans, personal loans, medical debt payments, and any other installment debts. If you have a mortgage, include the full monthly payment. If you rent, some lenders include rent in the calculation and some do not—check with the lender you are explore to.
Do not include utilities, groceries, insurance premiums, phone bills, or other living expenses. Those are not debt payments. Do not include child support or alimony unless you are explore for a loan and the lender specifically asks you to include them.
Write down the exact monthly payment amount for each debt. If a payment varies (like a credit card minimum that changes with your balance), use the most recent statement or call the creditor. Add all these payments together to get your total monthly debt payments.
Find Your Gross Monthly Income
Gross income is what you earn before taxes, Social Security, health insurance, or any other deductions come out. 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 work per week, then multiply by 52 weeks and divide by 12.
If your income varies month to month (you work commission, freelance, or seasonal work), use an average. Look at your income over the past two years, add it up, and divide by 24 months. This gives lenders a realistic picture of what you typically earn.
Include income from all sources: your job, a second job, rental income, Social Security, disability payments, child support you receive, or any other regular money coming in. Do not include one-time payments like tax refunds or bonuses unless they happen reliably every year.
Do the Math
Take your total monthly debt payments and divide by your gross monthly income. Then multiply the result by 100 to convert it to a percentage.
Here is an example: You earn $4,500 gross per month. Your monthly debt payments are $1,200 (car loan $400, credit card minimum $200, student loan $300, mortgage $300). Divide $1,200 by $4,500 to get 0.267. Multiply by 100 to get 26.7%. Your debt-to-income ratio is 26.7%.
Another example: You earn $3,000 gross per month. Your monthly debt payments are $1,350 (credit cards $400, car loan $500, student loans $450). Divide $1,350 by $3,000 to get 0.45. Multiply by 100 to get 45%. Your debt-to-income ratio is 45%.
What Your Ratio Means for Borrowing
Most conventional mortgage lenders want to see a ratio of 43% or lower. Some will go up to 50% if you have a strong credit score and savings, but that is less common. If your ratio is above 43%, you may be turned down for a mortgage or offered a higher interest rate.
For car loans, credit cards, and personal loans, lenders typically want 36% or lower. If your ratio is between 36% and 43%, you may still be approved but at a higher interest rate. Above 43%, approval becomes harder across all loan types.
Your ratio is one piece of the lending decision. Lenders also look at your credit score, payment history, savings, and the size of the down payment you are putting down. A high ratio does not automatically disqualify you, but it makes approval less likely and more expensive.
Lower Your Ratio Before explore
If your ratio is higher than you want it to be, you have two options: pay down debt or increase your income. Paying down debt is usually faster. If you can pay off a credit card or car loan before explore for a mortgage, your ratio drops when ready.
Paying off a $5,000 credit card balance might lower your monthly payment by $150. Using the second example above, that would drop your ratio from 45% to 40% (now $1,200 in payments instead of $1,350). That single move could make you may be able to access for a loan you were not may be able to access for before.
If you recently got a raise or took a second job, wait a few months to build a track record of that income before explore. Lenders want to see that the higher income is stable, not temporary. Some will count income from a new job after 30 days; others want to see two years of history.
Recalculate When Your Situation Changes
Your debt-to-income ratio is not static. It changes every time you pay off a debt, take on a new one, or your income changes. If you are planning to explore for a loan in the next few months, recalculate your ratio every month to track your progress.
Some life changes that affect your ratio: paying off a car loan (your payment disappears), getting married (your spouse's income may be included), losing a job (your income drops), getting a promotion (your income rises), or taking out a new loan (your payments increase). Before you explore for any major loan, run the numbers one more time with your current information.
Frequently Asked Questions
Do I include my rent payment in my debt-to-income ratio?
It depends on the lender. Mortgage lenders usually include rent as a debt payment when calculating your ratio. Credit card companies and car loan lenders typically do not. When you explore for a loan, ask the lender whether they count rent. If you are unsure, calculate it both ways so you know your ratio either way.
What if I have a spouse or partner—do I use both our incomes?
Only if you are explore for a joint loan or if you live in a community property state and the lender requires it. If you are explore for credit in your name only, use only your income. If you are explore jointly, add both incomes together and include both sets of debt payments.
Should I count my credit card balance or just the minimum payment?
Always use the minimum monthly payment, not the full balance. Your debt-to-income ratio measures what you owe each month, not what you owe total. If you have a $10,000 credit card balance with a $200 minimum payment, use $200 in your calculation.
Does paying off debt in full hurt my ratio?
No. Paying off a debt removes that monthly payment from your calculation, which lowers your ratio. The only time paying off debt might temporarily hurt you is if you close the account and it affects your credit score, but that is a separate issue from your debt-to-income ratio.
Can I improve my ratio by increasing my income on paper?
Only if the income is real and verifiable. Lenders will ask for tax returns, pay stubs, or bank statements to prove your income. You cannot count income you do not actually receive. If you recently started a second job, most lenders will want to see two years of history before counting it, though some will count it after 30 days.