Mortgage lenders have quietly tightened the screws, and the number doing the squeezing is your debt-to-income ratio.
If you're house hunting this spring, that single figure—your monthly debt payments divided by your gross monthly income—can decide whether you get approved, what rate you're offered, and how much house you can even shop for.
Here's why it matters more right now than it did a few years ago.
Home prices are still elevated in most metros, and mortgage rates hovering in the mid-6% range have pushed monthly payments up sharply.
That combination forces lenders to look harder at how much other debt you're already carrying.
The traditional ceiling most conventional loans follow is 43% DTI, though many lenders prefer 36% or lower.
Go above 43% and you're largely shut out of qualified mortgages unless you qualify through special programs.
Fannie Mae and Freddie Mac allow some loans up to 50% DTI, but only with compensating factors like strong reserves or a big down payment.
What counts against you surprises people.
Car loans, student loans, minimum credit card payments, personal loans, and even deferred student debt all get tallied.
Lenders generally use the minimum payment on credit cards, which is why a $12,000 balance at 22% APR can add hundreds to your monthly obligation without you feeling it.
Say you earn $6,000 a month before taxes.
At a 43% DTI, your total debt payments can't exceed $2,580.
If your car note runs $450, student loans $300, and minimum card payments $250, that leaves roughly $1,580 for a mortgage—including taxes, insurance, and HOA dues.
At today's rates, that might buy you a $200,000 loan, not the $350,000 you were picturing.
Paying down revolving balances is the fastest lever, because cutting a credit card balance lowers the minimum payment immediately.
Lenders recalculate the moment your statement reflects the lower balance.
Some borrowers shave five points off their DTI in two or three months just by attacking cards.
Another move: avoid opening new credit within six months of applying.
That new truck or store card can spike your DTI right when underwriters are reviewing your file.
And don't co-sign loans for family members—those obligations count against you even if you never make a payment.
For buyers who are close to the line, an FHA loan allows DTI up to around 50% with compensating factors, though you'll pay mortgage insurance.
Some credit unions and portfolio lenders keep loans in-house and set their own, sometimes looser, thresholds.
A mortgage broker who works with multiple lenders can often find more flexibility than a single bank.
More landlords now run DTI-style screens, and a ratio above 40% can sink an apartment application even with good credit.
Keeping balances low isn't just a homebuying strategy—it's become a gatekeeping metric for housing in general.
The takeaway: your DTI isn't a fixed fact about you.
It's a snapshot that responds to the balances you carry and the income you can document.
Pull your three credit reports for free at AnnualCreditReport.com, list every minimum payment, and run the division yourself before a lender does it for you.
In a market where every basis point and every dollar of monthly payment counts, knowing your number early is the cheapest advantage you've got.
Final Thoughts
Fix it before you shop, not after you fall in love with a house.