Can You Qualify for a Mortgage With Credit Card Debt, a Car Loan, or Student Loans?

How lenders count your debts: the payment, not the balance

When a lender reviews your file, the number of debts and the size of the balances are less important than one number: the monthly payment on each obligation. Mortgage underwriting is built around your debt-to-income ratio, or DTI, which compares your gross monthly income to your monthly debts. Your gross income is what you earn before taxes and other deductions, and the ratio tells the lender how much of your income is already spoken for before your mortgage payment comes out.

The CFPB explains what a debt-to-income ratio is in plain language, and Fannie Mae walks through why understanding your debt is essential before you apply. The takeaway from both: lenders think in monthly payments, so a large balance with a modest payment is often a smaller issue than a small balance with a large payment.

The back-end ratio is where your other debts live

Lenders look at two ratios. The front-end ratio is your total housing payment, including principal, interest, property taxes, homeowners insurance, and HOA dues where they apply, divided by your gross monthly income. The back-end ratio adds every other monthly debt on top of housing: car loans and leases, student loans, credit card minimums, personal loans, alimony, and child support. For most buyers, the back-end ratio is the one that matters more, because it is the one that can push a file over the line.

Credit cards: what lenders count

For credit cards, lenders typically use the minimum monthly payment shown on your credit report, not the full balance and not what you actually pay each month. That means a card with a $6,000 balance and a $150 minimum payment counts as $150 a month toward your DTI, no matter how much you send in.

Paying down large balances can still help in two ways. First, a lower balance usually means a lower minimum payment, which improves your DTI directly. Second, paying down revolving balances lowers your credit utilization, the share of your available credit you are using, which is one of the biggest levers on your credit score over time. Neither move requires closing the card, and closing cards can actually hurt by removing available credit from your utilization picture.

Car loans and leases: the full payment counts

An auto loan counts at its full monthly payment. If your car payment is $500 a month, the lender includes the whole $500 in your back-end ratio, not a percentage and not some assumed portion. A lease counts the same way, at the full monthly lease payment. A car that is nearly paid off still counts at the payment listed on your credit report, so a large, recent loan can move your DTI noticeably.

The good news is that a car payment is a slowly shrinking liability: as the balance drops and the term shortens, the payment stays the same until it is paid off, at which point it disappears from your DTI entirely. If you are close to the end of a car loan, that timing can matter more than you expect when you run your preapproval numbers.

Student loans: how lenders treat the payment

Student loans are included in your monthly debt picture, and the way lenders calculate the payment depends on the program and the lender. The general rules from the two big conventional investors give you a good sense of what to expect:

The typical guidelines, which vary by program and lender

When a student loan is in repayment, lenders generally use the monthly payment shown on your credit report. When a loan is deferred, in forbearance, or reports a $0 payment, the guidelines change: Fannie Mae's Selling Guide generally uses 1% of the outstanding balance when no monthly payment is reported, and Freddie Mac's Seller/Servicer Guide generally includes 0.5% of the outstanding balance when the report shows $0, unless other documentation supports a different payment.

For income-driven repayment plans, lenders may be able to use the documented monthly payment, which can be far lower than a standard payment, and in some cases a $0 documented payment can be used where the guidelines allow it. These are typical guidelines, not universal rules: they change by program, by lender, and over time, so the honest answer for your specific loans comes from running your actual file. The Freddie Mac checklist on financial readiness and the Freddie Mac DTI calculator are useful starting points for seeing how your own payments stack up.

What you can do to improve your DTI

If your payments push your ratio to the edge, a few concrete moves can change your picture. Here is the order Kladi suggests:

Pay down revolving balances

Paying down credit cards lowers your minimum payments and your utilization at the same time, so it helps your DTI today and your score over the next few billing cycles. Pay extra toward the cards with the highest balances first, and keep the accounts open.

Avoid new loans before closing

A new car loan, a furniture financing plan, or a new credit card taken on in the weeks before closing adds a new monthly payment right when lenders are reviewing your file, and it can change your approval or your rate. If you are shopping for a home, hold off on new credit until after you close, and tell Kladi about any big purchase you are considering before you make it.

Consider a co-borrower

Adding a co-borrower brings another income into the ratio, which can offset existing debts and raise the amount you qualify for. It also brings that person's debts and credit into the picture, so it is a decision to think through, not just a math fix.

Talk to a loan officer about your actual numbers

Every guideline here has exceptions, and programs and lenders differ in how they treat each debt. A short conversation with Kladi, with your actual payments in hand, will tell you which doors are open and which moves would change your numbers the most.

A worked example: how existing debt factors into your back-end ratio

Numbers are easier to feel with an example. This illustration shows how a borrower with a car loan, student loans, and credit card minimums lands in a back-end DTI calculation. Every number is an assumption made up for this example, not a quote and not a preapproval.

Key takeaways

• Lenders count the monthly payment on each debt in your DTI, not the total balance, so a big balance with a modest payment is often a smaller issue than it feels.
• Credit cards count at the minimum payment, car loans and leases at the full payment, and student loans at the payment on your report, with special rules for deferred and income-driven payments.
• DTI guidelines are ranges, not universal cutoffs: programs and lenders vary, and compensating factors like a larger down payment or solid reserves can make a real difference.
• Paying down revolving balances and avoiding new loans before closing are the two highest-leverage moves for most borrowers.

Frequently asked questions

Should I pay off my car before applying?

Not necessarily, and it can even backfire. The car payment counts toward your DTI either way, but paying the loan off early can drain the cash you planned to use for your down payment and closing costs, and closing the account can briefly affect your credit. If paying it off would remove a large payment and you have the cash to spare, run the numbers with Kladi first so you do not make a big move that changes your file in the wrong direction.

Do I need to close my credit cards?

No. Closing cards usually hurts more than it helps, because it removes available credit and can raise your utilization, and lenders typically count the minimum payment for DTI anyway. Paying balances down and keeping the accounts open is the better move for both your ratio and your score.

How are deferred student loans counted?

It depends on the program. When no payment is reported, Fannie Mae generally uses 1% of the outstanding balance and Freddie Mac generally includes 0.5% of the balance when the report shows $0, unless documentation supports a different payment. Documented income-driven payments, including $0 payments where the guidelines allow, can sometimes be used. These are typical guidelines that vary by program and lender, so the accurate answer for your loans comes from checking your actual file.

Primary sources

• CFPB: What is a debt-to-income ratio?
• Fannie Mae: Why understanding debt is essential
• Fannie Mae Selling Guide B3-6-05: Monthly Debt Obligations (how student loans are treated)
• Freddie Mac: Am I financially prepared to take out a home loan?
• Freddie Mac Single-Family Seller/Servicer Guide Section 5401.2: Monthly debt payment-to-income ratio
• Freddie Mac: Debt-to-income ratio calculator