Key takeaways
- Lenders focus heavily on the details in your credit report, including credit lines, payment history and existing loans, to assess your reliability as a borrower.
- Monthly debt payments matter more than your total debt and keeping your debt-to-income ratio, or DTI, around 50% can help you qualify for a mortgage.
- Managing multiple forms of debt responsibly, paying bills on time and keeping credit utilization under 30% can strengthen your credit score and improve your chances of mortgage approval.
Having debt does not automatically prevent you from buying a home. In most cases, lenders care less about how much you owe in total and more about what you pay each month relative to what you earn.
That monthly comparison is your debt-to-income ratio, one of the most important numbers in the mortgage approval process. Understanding how it works, what counts toward it and how to improve it can help you prepare before you apply.
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What is a debt-to-income ratio?
Your debt-to-income ratio measures the percentage of your gross monthly income that goes toward recurring debt payments. Lenders use it to gauge whether you can comfortably take on a mortgage payment alongside your existing obligations.
The ratio is expressed as a percentage. A lower number signals to lenders that you have more room in your budget for a housing payment.
There are two types that lenders may evaluate:
- Front-end ratio looks only at your projected housing costs, including principal, interest, taxes, insurance and any homeowners association fee. This is sometimes called the housing ratio.
- Back-end ratio adds all of your other monthly debt payments on top of the projected housing costs. This is the number most lenders weigh most heavily.
"We're looking at the projected housing payment, principal, interest, taxes, insurance and if there's a homeowners association fee,” said Jennifer Beeston, a mortgage lender in Florida. "Then we're also looking at your credit report."When lenders or housing articles refer to a debt-to-income ratio without specifying, they typically mean the back-end ratio."
How do you calculate your debt-to-income ratio?
Calculating your own ratio before applying for a mortgage gives you a realistic picture of where you stand. The formula is straightforward.
Step 1: Add up all of your required monthly debt payments. Include minimum credit card payments, auto loans, student loans, personal loans and any other installment debt that appears on your credit report.
Step 2: Add your estimated monthly housing payment. If you are not sure what that number will be, use a mortgage calculator to estimate principal, interest, taxes and insurance based on your target price range.
Step 3: Divide the total from Steps 1 and 2 by your gross monthly income (your income before taxes and deductions).
Step 4: Multiply by 100 to get your percentage.
For example, if your total monthly debt payments including a projected mortgage come to $2,500 and your gross monthly income is $6,000, your debt-to-income ratio would be about 42%.
What debt-to-income ratio do you need to qualify for a mortgage?
There is no single cutoff that applies to every borrower. The limit depends on the loan type, your credit score and other factors the lender considers.
A good rule of thumb is to keep your debt-to-income ratio around 50%, according to Nicole Rueth, a residential lender in Denver and founder of the The Rueth Team. You should allocate about half of your monthly income to payments on your credit report.
That said, most loan programs set their standard threshold closer to 43%, and borrowers with lower ratios generally qualify for better interest rates.
Ultimately, though, that ratio depends on the borrower and the type of loan. For example, if you have a low credit score, your lender could require a lower ratio. On the other hand, a first-time homebuyer may have more flexibility, and lenders could accept a debt-to-income ratio up to 57%, according to Rueth.
Here is a general breakdown of guidelines by loan program. Keep in mind that individual lenders may apply their own standards, and compensating factors like cash reserves, a strong credit score or a larger down payment can sometimes allow for a higher ratio.
- Conventional loans: Many lenders follow a 43% to 45% back-end limit, though automated underwriting systems may, in some cases, approve ratios up to 50% for borrowers with strong credit profiles.
- FHA loans: The standard guideline is 43%, but borrowers with compensating factors may qualify with a ratio as high as 57%.
- VA loans: There is no hard cap, but 41% is the benchmark lenders use. Ratios above that level require additional justification.
- USDA loans: The typical back-end limit is 41%.
These thresholds can shift based on lender overlays and your overall financial picture, so a conversation with a loan officer is always a good first step.
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What debts count toward your debt-to-income ratio?
Lenders calculate the ratio based on the recurring monthly obligations that show up on your credit report. Beeston said lenders don't necessarily consider the total amount of your debt, but rather what you owe each month. So, if you owe $100,000 in student debt, your lender may not penalize you for carrying such a hefty loan if the monthly payment is manageable.
Monthly payments that typically count include:
- Minimum credit card payments
- Auto loan payments
- Student loan payments (including income-driven repayment amounts)
- Personal loan payments
- Existing mortgage or rent payments (replaced by your projected new housing payment in the calculation)
- Child support or alimony obligations
- Any other installment debt on your credit report
The key word is "monthly." A $100,000 student loan balance with a $200 monthly payment affects your ratio far less than a $15,000 auto loan with a $500 monthly payment.
What does not count toward your debt-to-income ratio?
Not every expense you pay each month factors into the calculation. Lenders focus on debt obligations reported to credit bureaus, not your full household budget.
Expenses that generally do not count include:
- Utilities (electricity, gas, water, internet)
- Grocery and food costs
- Cell phone bills
- Streaming subscriptions and memberships
- Health insurance premiums
- Car insurance
- Daycare or childcare costs (unless court-ordered)
- 401(k) or retirement contributions
Medical debt may not always appear on your credit report. Since 2022, the three major credit bureaus have voluntarily excluded paid medical debts, medical debts less than a year old and medical debts under $500. Unpaid medical debts above $500 that are more than a year old can still be reported. A broader federal rule to remove all medical debt from credit reports was finalized in early 2025 but was vacated by a court in July 2025, so the voluntary bureau changes remain the current standard. Additionally, at least 15 states have enacted their own laws restricting or banning medical debt on credit reports. If you live in one of those states, some or all medical debt may already be excluded regardless of federal rules.
How can you lower your debt-to-income ratio before buying a home?
If your ratio is higher than you would like, there are steps you can take to bring it down before applying for a mortgage.
Pay down smaller debts first. Eliminating a credit card balance or finishing off a car loan removes that monthly payment from your ratio entirely. Targeting debts with the smallest remaining balances can produce the fastest results.
Avoid taking on new debt. Financing a new car or opening a new credit card shortly before applying for a mortgage adds to your monthly obligations and raises your ratio.
Increase your income. A raise, a side income stream or adding a co-borrower with their own income can improve your debt-to-income ratio by increasing the denominator in the calculation.
Refinance or consolidate existing debt. In some cases, consolidating high-interest debt into a lower-payment loan can reduce your total monthly obligation. Be cautious with this approach, though, because extending a loan term means paying more interest over time.
Request lower student loan payments. If you are on a standard repayment plan, switching to an income-driven repayment plan may reduce your monthly student loan payment and improve your ratio. Your lender will use the payment amount reported on your credit report.
How does your credit report affect mortgage approval?
Beyond your debt-to-income ratio, mortgage lenders care about the broader picture your credit report provides. "We're hyper-focusing on that credit that's on the credit report," Rueth said.
Your credit report includes breakdowns of your lines of credit and debt. For example, your mortgage lender can see how many credit cards you have, how long those cards have been open, the credit limit on each and how much credit you are using, among other things.
They can also see other loans you have taken out, such as other mortgages, car payments and installment loans. Your credit report will also list any bankruptcies or past credit inquiries.
Lenders look at this information to evaluate your track record as a borrower. A long history of on-time payments and responsible credit use signals lower risk, while missed payments, high balances or recent collections can raise concerns.
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How can you raise your credit score?
Lenders also consider your credit score, which is a numerical summary of the information in your credit report.
Like your debt-to-income ratio, there is no single credit score requirement for all borrowers, but you can be too low to qualify for a mortgage, according to Rueth. For most loan programs, you will need a score of at least 500, though higher scores open up more options and better interest rates.
"A credit score of 670 to 739 is considered good," Experian advises. "Credit scores of 740 and above are very good, while 800 and higher are excellent."
Rueth said credit scores can be judged differently depending on your situation, so you should still consult with a loan officer about your options before you rule out the possibility of owning a home.
Here are some practical ways to build or improve your credit score:
- Pay every bill on time. Payment history is the single largest factor in your credit score. Even one missed payment can cause a noticeable drop.
- Keep credit card balances below 30% of your limit. This is called credit utilization, and lower is better. If your card has a $10,000 limit, try to keep the balance below $3,000.
- Keep older accounts open. The length of your credit history contributes to your score. Closing a long-standing credit card can shorten your average account age and lower your score.
- Hold more than one type of credit. Having a mix of credit types, such as a credit card, a student loan and a car payment, shows lenders you can manage different obligations. "Showing that you can carry debt, you can manage debt, and you can pay debt is a huge win," Rueth said.
- Be strategic about paying off debt. It is good to show that you can hold and manage payments over time. Paying off all debt immediately before applying may actually reduce your active credit history.
- Limit hard credit inquiries. Each time you apply for new credit, a hard inquiry appears on your report and can temporarily lower your score. When rate-shopping for a mortgage, try to keep all applications within a 14-day window to be safe, since some scoring models use a shorter deduplication period than others.
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Frequently asked questions
Does rent count toward your debt-to-income ratio?
Your current rent payment does not count toward the ratio when you are applying for a mortgage to buy a home. Lenders replace your rent with the projected mortgage payment (principal, interest, taxes, insurance and any HOA fee) when calculating the ratio.
Can you get a mortgage with a high debt-to-income ratio?
It is possible, but your options may be more limited. Some loan programs allow ratios above 50% if you have compensating factors like a high credit score, significant cash reserves or a larger down payment. A loan officer can review your full financial profile to determine what programs may work for you.
Does paying off debt before applying help?
It depends on the type of debt. Paying off a credit card or finishing an auto loan removes that monthly payment from your ratio, which can help. However, closing credit accounts can sometimes lower your credit score by reducing your available credit or shortening your credit history. Talk to a lender before making major financial moves in the months leading up to your application.
Is total debt or monthly payment more important?
Monthly payment. Lenders use your required monthly debt payments, not your total outstanding balances, when calculating the ratio. A $200,000 mortgage with a $1,200 monthly payment and a $5,000 credit card balance with a $150 minimum payment are treated differently even though the mortgage balance is far larger.