Debt-to-Income Ratio: How to Calculate It and Lower It
Quick answer: Add all your monthly debt payments, divide by your gross monthly income, and multiply by 100. Many lenders prefer 36% or lower, and 43% is a common limit for many mortgages, though some programs allow more. A lower DTI helps, but lenders also weigh credit, savings, and job history.↗ Share on X
To calculate your debt-to-income ratio (DTI), add up all your monthly debt payments, divide that total by your gross monthly income (your pay before taxes), and multiply by 100. If you pay $1,800 a month in debts and earn $5,000 a month before taxes, your DTI is 36%. Many lenders like to see 36% or lower, and 43% is a common upper limit for many mortgages, though some loan programs allow more. Lowering your DTI before you apply can improve your odds, but no number makes approval certain, because lenders also look at your credit, savings, and job history.
Below is the exact math, a worked example, what counts and what doesn't, and the fastest ways to bring the number down.
What is debt-to-income ratio, in plain words?
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Debt-to-Income Ratio: How Lenders Read It and How to Cut It →DTI is the share of your income that already goes to debt every month. Lenders use it to answer one question: if we give this person another payment, can they still handle it?
A low DTI tells the lender you have room in your budget. A high DTI tells them you are stretched, even if you have never missed a payment.
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How do I calculate my DTI step by step?
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This content is informational and is not investment advice or financial consulting.
1. List every monthly debt payment. Use the minimum required payment, not what you choose to pay.
2. Add them up. That is your total monthly debt.
3. Find your gross monthly income. This is income before taxes and deductions. If you are paid yearly, divide by 12. If you are paid every two weeks, multiply one paycheck by 26 and divide by 12.
4. Divide total debt by gross income.
5. Multiply by 100 to get a percentage.
Formula: DTI = (total monthly debt payments ÷ gross monthly income) × 100
Can you show me a real example?
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How to Build an Emergency Fund on a Tight Budget →Here is a sample household. Swap in your own numbers.
| Monthly item | Amount |
|---|---|
| Rent or current mortgage payment | $1,200 |
| Car loan | $380 |
| Student loan (minimum payment) | $150 |
| Credit card A (minimum payment) | $45 |
| Credit card B (minimum payment) | $25 |
| Total monthly debt | $1,800 |
| Gross monthly income | $5,000 |
| DTI | $1,800 ÷ $5,000 = 0.36 = 36% |
Now say this person is applying for a mortgage. The lender will replace the $1,200 rent with the *new* housing payment, including principal, interest, property taxes, homeowners insurance, and HOA dues if any. If the new payment would be $1,600, the total debt becomes $2,200 and the DTI becomes 44%. That is why a DTI that looks fine today can be too high for the loan you want.
What counts as debt, and what doesn't?
This trips up a lot of people. Lenders generally count payments that show up on your credit report or are legal obligations.
| Usually counted | Usually NOT counted |
|---|---|
| Mortgage or rent (for mortgage applications, the new housing payment) | Groceries |
| Car loans and leases | Utilities (power, water, internet) |
| Student loans, even if deferred (lenders use a set payment rule) | Phone bill |
| Credit card minimum payments | Car insurance and health insurance |
| Personal loans | Streaming and subscriptions |
| Child support and alimony you pay | Gas and commuting costs |
| Co-signed loans | Childcare (in most cases) |
Two notes:
- Deferred student loans still count. Even if you are not paying now, mortgage lenders usually use a calculated payment.
- Co-signed debt counts as yours, even if the other person makes every payment.
Each lender and loan type has its own rules, so ask your lender for their exact list.
What is a "good" DTI?
There is no single cutoff for every lender. Here is how the numbers are commonly read:
| DTI range | How lenders often see it |
|---|---|
| 35% or less | Comfortable. You have room in your budget. |
| 36% to 43% | Workable. Many loans are approved here, sometimes with stricter terms. |
| 44% to 49% | Tight. Some programs allow it, often with strong credit or savings. |
| 50% or more | Hard. Many lenders will say no or ask you to lower debt first. |
Some mortgage programs, including certain government-backed loans, can accept a higher DTI when other parts of the application are strong. A loan officer or a HUD-approved housing counselor can tell you which programs fit your situation.
What's the difference between front-end and back-end DTI?
Mortgage lenders often look at two numbers:
- Front-end DTI: only your housing payment divided by gross income.
- Back-end DTI: all your debt payments, including housing, divided by gross income. This is the number most people mean when they say "DTI."
A common rule of thumb is the 28/36 rule: keep housing at or under 28% of gross income and total debt at or under 36%. It is a guideline, not a law, but it is a useful target when you set your budget.
Using the earlier example with a $1,600 new housing payment and $5,000 income:
- Front-end: $1,600 ÷ $5,000 = 32%
- Back-end: $2,200 ÷ $5,000 = 44%
Both are above the 28/36 guideline, which tells you this home price may be a stretch.
How can I lower my DTI before I apply?
You can move the number in two ways: lower the debt payments, or raise the income lenders can count. Here are the most practical options, starting with the fastest.
1. Pay off a small balance completely. A credit card or small loan paid to zero removes that whole minimum payment from the math. Paying a balance down but not off may only lower the minimum a little.
2. Target the debt with the highest payment for its balance. A car loan with 8 payments left might cost $380 a month. Paying it off removes $380 from your monthly debt, which can drop DTI several points.
3. Don't open new credit. Avoid new cards, car loans, or store financing in the months before a big application. Every new payment raises DTI.
4. Ask about lower student loan payments. Federal student loans have income-driven repayment plans. A lower required payment can lower DTI. Check how your lender treats these plans first.
5. Add documented income. A raise, a second job, or side income can count, but lenders usually want a history, often two years for self-employment or gig work. Cash you can't document generally won't help.
6. Add a co-borrower. A spouse or partner with income and low debt can lower the combined DTI. Their debts and credit count too, so run the numbers together.
7. Choose a cheaper home or smaller loan. Lowering the payment you are asking for is often the quickest fix of all.
Be careful with debt consolidation. Moving several debts into one loan can lower your monthly payment, which lowers DTI. But a longer loan can mean paying more interest overall, and some consolidation offers carry high fees. Read the full terms, and if you're unsure, talk to a nonprofit credit counselor.
Does DTI affect my credit score?
No. Your credit score does not use your income, so DTI is not part of it. But they are linked: high credit card balances raise your DTI *and* hurt your score through what's called credit utilization (how much of your card limits you are using). Paying cards down can help both at once.
How do I check my numbers before a lender does?
1. Pull your free credit reports at AnnualCreditReport.com, the official site for free reports from the three bureaus.
2. Write down every account that has a monthly payment.
3. Check for errors, such as a loan you paid off still showing a balance. Dispute errors with the bureau.
4. Gather proof of income: recent pay stubs, W-2s, and tax returns if you are self-employed.
5. Run the formula with the payment you expect on the new loan.
When should I talk to a professional?
DTI is only one part of the decision. Talk to a loan officer, a HUD-approved housing counselor, or a nonprofit credit counselor if:
- your DTI is above 43% and you are planning a mortgage;
- you are thinking about consolidating or settling debt;
- you have irregular, self-employed, or gig income;
- you are behind on any payment.
A good counselor will explain your options without pushing you into a product. Be wary of anyone who charges big upfront fees or promises approval.
Your next step
Tonight, open your bank app and your free credit report, and write down every minimum monthly payment and your gross monthly income. Run the formula once with today's numbers and once with the payment of the loan you want. If the second number is above 43%, pick one item from the "lower my DTI" list, usually paying off your smallest balance, and recalculate before you apply.
FAQ
Is debt-to-income ratio based on gross or net income?
Gross income, meaning your pay before taxes and deductions. Using take-home pay would make your DTI look higher than what lenders calculate.
Do utilities and phone bills count in DTI?
Usually not. Lenders generally count debts and legal obligations such as housing, car loans, student loans, credit card minimums, personal loans, and child support or alimony.
Does my DTI affect my credit score?
No. Credit scores don't use income. But high credit card balances raise your DTI and also hurt your score through credit utilization, so paying cards down can help both.
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Educational content, not personalized financial advice. Sources cited where applicable.