Buying a Home With Student Loan Debt: What Actually Counts Against You

If you're carrying student loans, you've probably wondered whether buying a home is even on the table. Here's the good news: student loan debt almost never disqualifies you from a mortgage by itself. What matters is how that debt fits into one number — your debt-to-income ratio — and you have more control over that number than you think.

I work with a lot of Wisconsin buyers carrying $20,000, $50,000, even six figures in student loans, and most of them assume the balance is the problem. It usually isn't. Lenders don't count your total loan balance against you — they count a monthly payment. The catch is knowing which payment they'll use, because that figure can swing by hundreds of dollars depending on the loan you choose.

Can you buy a house if you have student loans?

Yes — and it's more common than you'd guess. A student loan is just another monthly obligation, like a car payment or a credit card minimum. Lenders total your monthly debts, divide by your gross monthly income, and get your debt-to-income ratio (DTI). As long as your student loan payment fits inside the DTI limits for your loan program, the debt itself isn't a dealbreaker. If you want the full picture of how lenders size up affordability, I broke that down in how much house you can actually afford in Wisconsin.

How do lenders count student loans in your DTI?

This is where it gets specific — and where the right guidance saves you real money. When your credit report shows an actual monthly payment, lenders generally use that number. The complication comes when your loans are deferred, in forbearance, or reporting a $0 payment, because the lender still has to assume some payment exists. How they calculate that assumed payment depends entirely on the loan type:

• Conventional (Fannie Mae) — if your payment reports as $0, it uses 1% of the balance as the assumed monthly payment.
• Conventional (Freddie Mac) — for deferred loans, it uses 0.5% of the balance.
• FHA — uses the greater of your actual payment or 0.5% of the balance, and counts the loan even if it's deferred or showing $0.

Same borrower, same debt, very different math. That's why "which loan should I use?" isn't a minor detail — for someone with student loans, it can be the whole ballgame.

A real dollar example

Say you have $50,000 in student loans and your credit report shows a $0 payment because they're deferred:

• A Fannie Mae conventional loan counts 1% — that's $500 a month working against your DTI.
• A Freddie Mac or FHA loan counts 0.5% — $250 a month.
• If you're on an income-driven repayment plan and can document, say, a $180 monthly payment, a conventional loan can often use that real $180 instead.

That's a $320-a-month swing between the worst case and the best case — on the exact same debt. In DTI terms, freeing up $320 a month can translate into tens of thousands of dollars of additional home you're able to finance. Nothing about your loans changed; only the strategy did.

What can you do to qualify with student loan debt?

A few moves genuinely move the needle:

• Document a real payment. If you're on (or can get on) an income-driven repayment plan, a lower documented payment often beats the assumed 1% or 0.5% figure.
• Match the loan to your situation. Freddie Mac's and FHA's 0.5% treatment is usually friendlier for deferred loans than Fannie Mae's 1%.
• Pay down revolving debt first. Knocking out a credit card balance often lowers your DTI faster than throwing cash at a huge student loan balance.
• Don't drain your savings to pay off loans. Wiping out the reserves and down payment you'd need to actually close usually backfires. Run the numbers before you pay anything off.

The bottom line

Student loan debt changes the math on a mortgage, but it rarely closes the door. The buyers who get stuck are usually the ones who guessed at their DTI or picked a loan program by accident. The buyers who get the keys are the ones who looked at the real numbers and chose the path that counted their debt the most favorably. That's a 20-minute conversation — not a five-year wait.