Debt-to-Income Ratio: How to Calculate It (and Lower It)
Quick answer: Add up your monthly debt payments, divide by your gross monthly income and multiply by 100. For example, $1,800 in debt payments on $5,000 of income is a 36% DTI. Lenders use it to judge whether you can afford one more payment.↗ Share on X
Your debt-to-income ratio (DTI) is the share of your monthly gross income that goes to debt payments. To calculate it, add up your monthly debt payments, divide by your monthly income before taxes, and multiply by 100. If you pay $1,800 a month on debts and earn $5,000 a month before taxes, your DTI is 36%. Lenders care because it shows how much room you have left in your budget to take on a new loan and still pay it on time.
This article explains how to get the number right, what lenders usually look for, and how to lower it. Every lender sets its own rules, so treat the ranges below as general guides, not approval promises.
What counts as "debt" in the calculation?
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Saver vs. Spender: A Money Plan for Couples Who Clash →Lenders look at recurring monthly payments that show up on your credit report or that you are legally required to pay. Here is what usually goes in and what usually stays out.
| Usually counted | Usually NOT counted |
|---|---|
| Rent or mortgage payment (including property tax, insurance and HOA dues if part of it) | Groceries |
| Minimum credit card payments | Utilities (power, water, internet) |
| Car loan or lease payments | Cell phone bill |
| Student loan payments | Gas and transportation |
| Personal loans | Health and car insurance premiums (not tied to a loan) |
| Child support and alimony you pay | Subscriptions and streaming |
| Other installment loans (furniture, buy now, pay later plans that report) | Savings and retirement contributions |
Two details trip people up:
- Credit cards: use the minimum payment on your statement, not your full balance and not what you actually choose to pay.
- Student loans on pause or income-driven plans: lenders have specific rules for these, and they differ by loan type. Some use your actual payment; others use a percentage of the balance. Ask the lender which method they use.
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What counts as "income"?
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This content is informational and is not investment advice or financial consulting.
Use your gross monthly income: what you earn before taxes and deductions.
- Salary: divide your yearly salary by 12.
- Hourly: hourly rate x usual weekly hours x 52, then divide by 12.
- Self-employed or gig work: lenders usually look at your net business income from tax returns, often averaged over two years. Your gross deposits are not the same as your income for this purpose.
- Other steady income: alimony or child support you receive, Social Security, pensions and disability income may count if they are documented and expected to continue.
Irregular overtime, bonuses and side income may or may not count, depending on how long you have received them and how well you can document them.
How to calculate your DTI step by step
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2. Add them up. That is your total monthly debt.
3. Find your gross monthly income.
4. Divide debt by income.
5. Multiply by 100 to get a percentage.
Worked example
Maria earns $60,000 a year. Her gross monthly income is $60,000 ÷ 12 = $5,000.
| Monthly debt | Amount |
|---|---|
| Rent | $1,200 |
| Car loan | $350 |
| Student loan | $180 |
| Credit card minimums (two cards) | $70 |
| Total | $1,800 |
$1,800 ÷ $5,000 = 0.36 → DTI of 36%.
Her groceries, phone and utilities are real costs, but they are not part of this number.
Front-end vs. back-end DTI: what's the difference?
When you apply for a mortgage, you may hear about two ratios.
- Front-end DTI (housing ratio): only your housing payment divided by income. For a mortgage, housing includes principal, interest, property taxes, homeowners insurance and any HOA dues or mortgage insurance.
- Back-end DTI: all your monthly debts, including the new housing payment, divided by income. This is the number most people mean when they say "DTI."
For Maria, if a new mortgage payment would be $1,400 and it replaces her rent:
- Front-end: $1,400 ÷ $5,000 = 28%
- Back-end: ($1,400 + $350 + $180 + $70) ÷ $5,000 = $2,000 ÷ $5,000 = 40%
What DTI do lenders look for?
There is no single cutoff for everyone. Limits depend on the type of loan, your credit score, your savings and the lender. As a general guide, many people use these ranges:
| DTI | How lenders often see it |
|---|---|
| 35% or less | Comfortable. You likely have room in your budget. |
| 36% to 43% | Workable for many loans, but some lenders may ask for more proof or offer less favorable terms. |
| 44% to 49% | Harder. Some loan programs allow it with strong credit, savings or other factors. |
| 50% or more | Many lenders will decline, and your budget is likely tight. |
For mortgages, 43% is a number you will see often, because it has been a common benchmark in lending rules. Some government-backed and conventional programs can go higher in certain cases. Personal loans and auto loans have their own limits.
A lower DTI does not mean automatic approval. Lenders also look at credit history, how much you have in savings, how stable your job is, and the size of your down payment.
Why do lenders care so much about this number?
Your credit score shows how you have handled debt in the past. Your DTI shows whether you can afford one more payment right now.
If most of your income is already committed, a surprise expense, like a car repair or a medical bill, can push you into missing a payment. Lenders want to see enough room in your budget to absorb that kind of shock.
The ratio also matters for you, not just the lender. Even if a lender approves a high DTI, it may leave you with little money for savings, emergencies and daily life.
How can you lower your DTI?
You can lower the ratio two ways: lower the debt payments or raise the income. Some options work fast; others take months.
Faster options
1. Pay off a small loan completely. Eliminating a $150 monthly payment changes your DTI more than paying down part of a big balance.
2. Pay down credit card balances. A lower balance usually means a lower minimum payment.
3. Avoid new debt before applying. Do not finance furniture or a new car in the months before a mortgage application.
Slower options
4. Refinance or consolidate to a lower monthly payment. Be careful: a longer term can mean paying more interest overall. Compare the total cost, not just the monthly payment.
5. Increase documented income. A raise, a second job with steady history, or a co-borrower on the loan can help. Side income usually needs to be documented, often for a year or two.
6. Look at income-driven repayment for federal student loans, if you qualify. It may lower your monthly payment. Ask your loan servicer.
Common mistakes when calculating DTI
- Using take-home pay instead of gross income. This makes your DTI look higher than lenders see it.
- Forgetting a loan that is on your credit report, like a co-signed loan for someone else. Lenders usually count it.
- Using full card balances instead of minimum payments.
- Leaving out child support or alimony you pay.
- Counting income you cannot document.
When should you get professional help?
Talk to a HUD-approved housing counselor, a nonprofit credit counselor or a loan officer if:
- your DTI is above about 43% and you want to buy a home;
- you are unsure how your student loans will be counted;
- you are self-employed and your income varies a lot;
- your debt payments feel unmanageable right now.
A nonprofit credit counselor can review your budget for free or at low cost. Be wary of companies that charge large upfront fees to "fix" your debt.
Your next step: calculate your real number tonight
Pull up your most recent credit report (you can get free reports at AnnualCreditReport.com) and your latest pay stub. List every monthly payment from the "usually counted" column, add them up, and divide by your gross monthly income. Write the percentage down. If it is above 36%, pick the smallest loan on your list and make a plan to pay it off first. That single payoff is often the quickest way to move your number.
FAQ
Is rent included in debt-to-income ratio?
Yes, most lenders count your current rent or housing payment. When you apply for a mortgage, the new housing payment replaces your rent in the calculation.
Do lenders use gross or net income for DTI?
Gross income, which is what you earn before taxes and deductions. Using take-home pay makes your DTI look higher than lenders calculate it.
What is a good debt-to-income ratio?
Many people aim for 35% or lower. For mortgages, 43% is a common benchmark, though limits vary by lender, loan type and your overall finances.
Does DTI affect my credit score?
No. DTI is not part of your credit score, since credit reports do not include your income. But lenders look at both when you apply for a loan.
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Educational content, not personalized financial advice. Sources cited where applicable.