Yes, student loans count in your debt-to-income ratio (DTI), and they count even when your payments are paused or low. What matters is the monthly payment amount the lender is allowed to use, and that amount depends on the loan program. FHA, Fannie Mae and Freddie Mac each have their own rule for deferred, forborne and income-driven loans. Knowing which rule applies to you before you apply can change your result.
This guide explains how DTI is calculated, how each program treats student loans, and what you can do to improve your numbers.
TL;DR
- DTI is your total monthly debt payments divided by your gross monthly income. Student loans are part of the debt side.
- FHA lenders must count every student loan. If the reported payment is zero, they use 0.5% of the balance.
- Fannie Mae can accept a documented $0 income-driven payment. Freddie Mac requires an amount above zero for all student loans.
- Student loans alone rarely cause a denial. A high total DTI, weak credit or thin reserves is usually the cause.
- Run your numbers with an affordability calculator before you apply, so the payment a lender uses does not surprise you.
Table of Contents
- Does DTI include student loans?
- Front-end and back-end DTI
- What DTI limits apply?
- How FHA counts student loans
- How conventional loans count student loans
- Side-by-side: which payment gets used
- Income-based repayment and your mortgage
- Perspective: what we see in student loan files
- Steps to improve your approval chances
- Get your numbers checked
- FAQ
- Sources
Does DTI include student loans?
Yes. The Consumer Financial Protection Bureau defines debt-to-income ratio as all of your monthly debt payments divided by your gross monthly income, meaning your income before taxes and other deductions. It is one way lenders measure whether you can handle the payments on a new loan. The same page notes that different loan products and lenders set different DTI limits.
Student loans sit in the same bucket as other installment debt. According to Investopedia, they are treated much like car loans or personal loans, so a large monthly student loan payment can push your DTI past a lender’s limit and lead to a denial.
The balance on its own is not the number that matters. The monthly payment the lender assigns to the loan is.
What goes into the calculation
Lenders add up these monthly items:
- The proposed mortgage payment: principal, interest, property taxes, homeowners insurance, and mortgage insurance or HOA dues if they apply.
- Student loan payments.
- Car loan payments.
- Minimum credit card payments.
- Personal loans, and other recurring obligations that appear on your credit report.
They do not include utilities, groceries, phone bills or subscriptions.
A worked example
Say you earn $6,000 a month before taxes. You have a $350 student loan payment, a $300 car payment and $50 in minimum card payments, and the new mortgage payment would be $1,900.
- Existing debts: $350 + $300 + $50 = $700
- With the new mortgage: $700 + $1,900 = $2,600
- DTI: $2,600 ÷ $6,000 = about 43%
If the student loan counted as $600 instead of $350, your total would be $2,850 and your DTI would be 47.5%. The same borrower can look quite different depending on which payment figure the lender uses.
Front-end and back-end DTI
You will see two ratios mentioned. Front-end DTI looks only at housing costs against income. Back-end DTI adds all your other monthly debts, including student loans. Back-end DTI is the one that usually decides a file, and it is the one student loans affect.
A common rule of thumb says to stay at or below 36%, and many articles repeat it. It is a guideline, not a program limit. The actual ceilings are higher, as the next section shows, and they come with conditions.
What DTI limits apply?
Limits depend on how the loan is underwritten.
| Program or method | Maximum DTI described in the guidelines |
|---|---|
| Fannie Mae, manual underwriting | 36%, up to 45% with specific credit score and reserve requirements |
| Fannie Mae, Desktop Underwriter (DU) | 50% |
| Qualified mortgage benchmark | 43% is a common threshold, though some lenders allow higher based on other factors |
A 50% ceiling in automated underwriting does not mean approval at 50%. The system also weighs your credit profile, down payment and reserves, and an individual lender can add stricter requirements of its own. Treat the published ceiling as the outer edge, not a target.
So can student loan debt cause a denial? It can, when it pushes your total DTI over what the program and lender will accept. Far more often, the loans simply reduce how much you can borrow, or require a stronger file in other areas.
How FHA counts student loans
If you are looking at an FHA loan, the rule is strict and simple. Under HUD’s Mortgagee Letter 2021-13, lenders must include all student loans in your liabilities, whatever their payment status.
The payment they use depends on what is reported:
- Payment above zero on the credit report, or a documented actual payment above zero: the lender uses that payment.
- Reported payment of zero: the lender uses 0.5% of the outstanding balance.
For a $60,000 balance with a reported $0 payment, FHA counts $300 a month. Compare that with a documented income-driven payment of $120: if the credit report shows $0, the $300 figure applies, which can be much higher than what you actually pay.
The same letter allows a lender to leave out the payment if written documentation from the loan program, creditor or servicer confirms the balance has been forgiven, canceled, discharged or paid in full. Keep any such letters in a folder, because the underwriter will want them on file.
FHA is often the practical route for buyers with modest savings, so it is worth running the FHA affordability calculator with the payment FHA would assign, not the one you currently pay.
How conventional loans count student loans
Conventional loans follow Fannie Mae or Freddie Mac guidelines. They are similar in spirit but differ in important details.
Fannie Mae
Per the Fannie Mae monthly debt obligations section:
- If the credit report shows a monthly payment, the lender may use it. If that figure is wrong, the lender may use the payment from your most recent student loan statement.
- If the payment is $0 or not reported and you are on an income-driven repayment plan, the lender may use a documented $0 payment.
- For deferred or forborne loans, the lender may use 1% of the balance or a fully amortizing payment based on documented loan terms.
The documented $0 option matters. A borrower whose income-driven payment is truly $0 can, under Fannie Mae rules, be qualified with no student loan payment, provided the paperwork backs it up.
Freddie Mac
Freddie Mac is stricter on this point. Its Seller/Servicer Guide section 5401.2 requires an amount greater than zero in the DTI for all student loans, including those on income-driven plans, whatever the credit report shows. If the credit report displays a zero payment, Freddie Mac bulletin 2023-18 lets lenders use other file documentation to determine the payment.
For income-driven loans where recertification or a payment increase falls on or before the first mortgage payment due date, the same guide requires additional payment documentation on mortgages with Note Dates on or after April 1, 2025. That is a good reason to know your recertification date before you apply.
Loans that can be left out
Freddie Mac allows exclusion when the file documents eligibility or approval for a qualifying forgiveness, cancellation, discharge or employment-contingent repayment program and the other conditions are met, per the Seller/Servicer Guide. An earlier Freddie Mac bulletin describes omitting loans with 10 months or less remaining, subject to documentation. Lender policies can add conditions, so ask before assuming a loan will be excluded.
Side-by-side: which payment gets used
| Situation | FHA | Fannie Mae | Freddie Mac |
|---|---|---|---|
| Reported payment above $0 | That payment | That payment (or statement payment if the report is wrong) | That payment, subject to documentation |
| Reported payment of $0 | 0.5% of balance | Documented $0 if income-driven | Amount above $0 required, based on file documentation |
| Deferred or forborne | 0.5% of balance if reported as $0 | 1% of balance or fully amortizing payment | Amount above $0 required |
| Paid off, forgiven or discharged | Excluded with written documentation | Per guideline conditions | Excluded when program conditions are documented |
This table is a summary. Individual lenders may layer their own rules on top, so the final answer comes from the lender reviewing your file.
Income-based repayment and your mortgage
An income-driven plan lowers your monthly bill, and that can help or not help depending on the program.
On a conventional loan underwritten to Fannie Mae guidelines, a documented low or $0 payment can be used directly. On Freddie Mac, a figure above zero is still required. On FHA, a $0 report triggers the 0.5% calculation, although a documented actual payment above zero can be used.
Three practical points:
- Get an up-to-date payment letter from your servicer showing the plan and the monthly amount.
- Know your recertification date. If your payment is set to rise soon, an underwriter may need documentation of the higher figure.
- Do not stop or change your plan mid-application without asking your loan officer, since it can change the payment the lender counts.
Freddie Mac says its student loan policies aim to balance access to credit with responsible underwriting, and give lenders standard ways to evaluate modern repayment and forgiveness options. In practice, the documentation is what makes the difference.
Perspective: what we see in student loan files
We work with first-time buyers every week, and student loans are one of the most common worries they bring. Our view is that most borrowers rule themselves out too early or assume the wrong number is being used.
The first step is to find out which payment each program would assign to you. The same borrower can have a workable DTI under one program and a tight one under another. That is why we compare programs before recommending one, rather than starting with a single product.
The second step is to separate what you can change from what you cannot. Documentation, recertification timing and credit report errors can be fixed. The balance and your income cannot, at least in the short term. An online application lets you send servicer letters and statements early, so questions are answered before they delay your closing.
Third, we look at the whole picture. Savings, reserves, stable employment and a strong credit history all give a lender reasons to approve a file with a higher DTI. As Investopedia notes, lenders often look beyond DTI to your savings and assets, which show whether you can handle unexpected expenses.
— David Mordue
Steps to improve your approval chances
- Pull your credit reports and check every student loan entry. A wrong payment amount or a loan listed twice raises your DTI for no reason. You can request free reports at AnnualCreditReport.com.
- Gather servicer documents. Get a current statement, your repayment plan details and any forgiveness or discharge letters.
- Calculate DTI both ways. Use the payment you make today and the payment a program would assign. Plan around the higher one.
- Pay down small balances. Clearing a $150 monthly car or card payment can help your DTI more than a small extra student loan payment will.
- Avoid new debt. A new car loan or store card during the process can change your ratio and your credit score.
- Build reserves. Cash left after closing is a compensating factor lenders weigh when DTI is high.
- Compare loan types. FHA, conventional and others handle student loans differently, so the same file can price differently.
If you are comparing the cost of renting against buying while you pay loans down, our rent vs buy calculator shows the trade-off in plain numbers.
Should you pay off your student loans first?
Not always. Paying off a loan in full removes its payment from your DTI, but using your savings to do it can leave you short on the down payment and reserves, and thin reserves can hurt as much as a high ratio. Paying off a small loan with a high monthly payment can be worthwhile. Draining your cash to pay down a long-term, low-rate balance usually is not.
The type of mortgage also affects the decision. The questions you ask about rate structure matter alongside DTI, and what to ask lenders about fixed and adjustable mortgages is a useful checklist for the full financial picture, since the monthly payment on your new loan is the other half of your ratio.
Get your numbers checked
We compare lenders and loan programs for buyers and refinancers, and our application is fully online, with funding in under 21 days possible. If you want to see how your student loans would be counted, start with a pre-approval request. You can also check the payment you could afford using our conventional affordability calculator first. If you are a homeowner looking at lower payments, our home purchase and refinance services cover both.
FAQ
Can I be denied a mortgage because of student loans?
Yes, if the payment counted for your loans pushes your total DTI above what the program and lender allow. Student loans are treated like other installment debt, so a high payment can lead to denial. Many borrowers with student loans are approved, especially when credit, savings and income are strong.
Do deferred student loans count toward DTI?
Usually yes. FHA requires lenders to include all student loans regardless of payment status, and Fannie Mae allows 1% of the balance or a documented fully amortizing payment for deferred loans. Freddie Mac requires an amount above zero. Ask your lender which method it will use.
What DTI do I need for a mortgage?
There is no single number. Fannie Mae’s manual underwriting limit is 36%, up to 45% with credit score and reserve requirements, and DU can go to 50%. Lenders can set stricter limits, so a lower ratio gives you more options.
Does an income-driven repayment plan help me qualify?
It can. Fannie Mae allows a documented $0 payment on an income-driven plan, which can lower your DTI. Freddie Mac requires a figure above zero, and FHA uses 0.5% of the balance when the reported payment is zero. Keep your servicer paperwork current.
Sources
- What is a debt-to-income ratio? (CFPB)
- Debt-to-Income Ratios (Fannie Mae Selling Guide)
- Monthly Debt Obligations (Fannie Mae Selling Guide)
- Mortgagee Letter 2021-13 (HUD)
- Seller/Servicer Guide section 5401.2 (Freddie Mac)
- Bulletin 2023-18 (Freddie Mac)
- Bulletin 2019-20 (Freddie Mac)
- Bulletin 2017-23 (Freddie Mac)
- How to Get a Mortgage While Managing Student Loan Debt (Investopedia)