But the number that's actually killing loan applications right now isn't on the rate sheet — it's your debt-to-income ratio, and a lot of buyers don't find out it's a problem until they're already under contract.
Here's the short version: DTI is all your monthly debt payments divided by your gross monthly income.
Car loan, student loans, minimum credit card payments, the new mortgage you're applying for — all of it.
Lenders generally want that total at or below 43% for a qualified mortgage, though many conventional loans now allow up to 50% with compensating factors like strong credit or big reserves.
Why this matters in 2025: the same paycheck buys less house than it did three years ago.
Home prices in many metros are flat or falling slightly, but they never gave back the pandemic run-up.
Meanwhile insurance, property taxes, and HOA dues have climbed hard — and those count toward your DTI too, not just principal and interest.
So a household that looked like a 36% borrower in 2021 can be a 47% borrower today without changing a single habit.
The denominator just got squeezed by grocery bills and a car payment that felt reasonable at the time.
Lenders use your minimum payment, not your balance, which sounds generous until you realize minimums are typically 1% to 3% of the balance.
A $12,000 balance at a 2% minimum is $240 a month hitting your DTI every single month.
Pay it down to $3,000 and you just freed up $180 of monthly borrowing capacity — potentially tens of thousands in home price.
The folks selling you the pre-approval letter that isn't worth the paper it's printed on.
A full underwriting approval is a commitment.
A few practical moves if you're shopping this year.
Pay down revolving debt before you apply, not after — it moves the needle faster than saving the same dollars for a down payment.
Don't open a new card or finance furniture during escrow; a single inquiry can shift your file.
And ask lenders to run your file with and without a co-borrower if that's an option, since adding a second income helps DTI but adding a second car loan hurts.
Also worth knowing: FHA loans often approve DTI up to 50% with compensating factors, and some programs go higher.
So "denied" from one lender isn't the end of the road — it's one underwriting opinion.
The uncomfortable truth is that DTI is a blunt instrument.
It doesn't care that your childcare costs more than your car.
It doesn't care that you got a raise last month.
It's a snapshot, and snapshots punish people with irregular income, side gigs, or a bonus-heavy pay structure.
Our take: the mortgage industry spent two years blaming rates for a frozen market, but DTI is doing a lot of the quiet work of keeping buyers out.
Final Thoughts
If you're planning to buy in the next year, treat your debt load like a down payment — attack it early, and get a real underwriting review before you fall in love with a house you can't finance.