What DTI is and why lenders care so much
Your debt-to-income ratio is your total monthly debt payments divided by your gross monthly income. It answers the lender's core question — how much of this person's income is already spoken for? — better than your credit score does. A score measures whether you pay; DTI measures whether you can pay one more bill.
Lenders actually compute two versions:
- Front-end (housing) ratio: just the housing payment ÷ income. The classic target is 28% or less.
- Back-end (total) ratio: housing plus every recurring debt ÷ income. This is the number that drives approval decisions.
The thresholds that matter in 2026
| Back-end DTI | What it means |
|---|---|
| Under 36% | Comfortable. Qualifies for the best conventional pricing; leaves budget slack. |
| 36–43% | Approvable, but tighter. Conventional loans may need strong credit or reserves; FHA is routinely fine here. |
| 43–50% | Possible only with compensating factors (high score, large down payment, cash reserves). Expect friction. |
| Over 50% | Most lenders decline. Focus on debt reduction before applying. |
These bands come from the classic 28/36 rule and current agency guidelines. Note that the qualified-mortgage framework historically centered on 43%, and automated underwriting (Fannie Mae's DU, Freddie Mac's LP) can stretch approvals to ~50% for otherwise strong files.
What counts — and what doesn't
Counted: rent or mortgage (with escrowed taxes/insurance), auto loans, student loans, personal loans, credit card minimums (not your full balance), and court-ordered obligations like child support.
Not counted: utilities, groceries, gas, phone plans, streaming, health insurance, and 401(k) loans. Lenders ignore these, but your budget doesn't — which is why a 43% DTI that's "approvable" can still feel suffocating in real life.
Lowering your DTI before a mortgage application
- Kill a whole payment, not part of one. DTI counts payments, not balances. Paying off a $3,000 car loan with a $400 payment helps more than putting $10,000 against a mortgage.
- Pay cards down before the statement date. Minimum payments reported to the bureaus are what count. Our credit card payoff calculator shows how fast you can clear them.
- Don't finance anything new within 6 months of applying. A new car payment can cut your home budget by tens of thousands of dollars — check the effect with the home affordability calculator.
- Document all income. Bonuses, overtime, and side income usually need a two-year history to count. Gather the paperwork early.