Mortgage rates get all the headlines, but there's a less glamorous number that can sink your home loan application before a lender ever quotes you a rate: your debt-to-income ratio.
It's the math that compares what you owe each month to what you earn, and right now it's tripping up a lot of otherwise qualified buyers.
Add up your minimum monthly payments — credit cards, car loans, student loans, personal loans, plus the mortgage you're hoping to get.
Divide that by your gross monthly income, before taxes.
That percentage is your DTI, and lenders treat it like a report card.
The magic number most conventional lenders want to see is 36% or lower.
Go above 43% on a qualified mortgage and you're likely to get a hard no, regardless of your credit score or how much you have saved for a down payment.
Some loan programs stretch to 50%, but those come with tighter scrutiny and often higher costs.
Because the cost of everything else went up.
Grocery bills, car insurance, and rent have all climbed faster than most paychecks.
When everyday expenses rise, people lean on credit cards just to get by.
Balances grow, minimum payments grow, and that DTI creeps upward without anyone consciously deciding to take on more debt.
Even if you pay your balance in full every month, lenders typically count the minimum payment as an obligation.
A few cards with a few thousand dollars on them can add hundreds to your monthly debt load on paper, pushing a comfortable 34% ratio into disqualifying territory.
There's also a painful feedback loop with rates.
When the Federal Reserve keeps borrowing costs elevated, credit card APRs stay high, auto loans get pricier, and mortgage rates remain stubborn.
Higher rates mean higher minimum payments, which means a worse DTI, which means you qualify for less house — or none at all.
Paying down revolving debt is the fastest lever, because it lowers both your balance and your minimum payment.
Avoid financing a car or taking a new loan in the six months before you apply for a mortgage.
And if you're close to the line, consider whether a smaller loan amount, a co-borrower, or a different loan program gets you under the threshold.
The takeaway is simple but uncomfortable.
Your mortgage approval may hinge less on the house you love and more on the debts you've already accumulated.
Run your own DTI before a lender does — you'd rather find out on your couch than in an underwriting email.
Our take: DTI is the most ignored number in American household finance, and it's quietly shaping who gets to buy a home and who gets priced out.
If you're planning to buy in the next year, treat every new payment obligation as a vote against your future mortgage.
Final Thoughts
Pay down the cards, pause the big purchases, and let the math work in your favor.