Debt-to-Income Ratio (DTI) (DTI)
Direct definition
The percentage of your gross monthly income used to pay monthly debt obligations.
Written by the Vabasso Mortgage Editorial Team · Reviewed against agency and federal sources · Read our editorial policy for how we research and review mortgage content
Plain-English explanation
DTI comes in two flavors: front-end (housing only) and back-end (housing plus all other debts). Program thresholds vary, and compensating factors can allow higher ratios.
Why it matters
DTI is one of the most important qualifying metrics — it caps how much you can borrow.
Where you may see it
- Loan application
- Underwriting conditions
- Pre-approval letter
A real-world example
Educational and illustrative only
A common misunderstanding
There isn't one universal DTI cutoff that applies to every borrower or program — limits vary by loan type and compensating factors.
Frequently asked
What DTI is too high?+
Program caps vary — many conventional AUS approvals allow into the mid-40s with strong compensating factors; some non-QM go higher.
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- Author
- Vabasso Mortgage Editorial Team
- Reviewed by
- Vabasso Mortgage Licensed Advisory Team
- Last reviewed
- July 30, 2026