Debt-to-Income Ratio Explained (and Why Lenders Care)
When you apply for a mortgage or loan, one of the first numbers a lender checks is your debt-to-income ratio, or DTI. Understanding it — and improving it — can be the difference between approval and rejection.
What DTI measures
Your DTI is your total monthly debt payments divided by your gross monthly income, expressed as a percentage. It includes your housing payment, car loans, student loans, and minimum credit-card payments — but not variable costs like groceries, utilities, or subscriptions.
The 36% and 43% thresholds
Most lenders prefer to see a total DTI at or below 36%, and many cap mortgage approvals around 43%. Below 36% gives you the most options and often the best interest rates, because it signals you have comfortable room in your budget for a new payment.
How to lower your DTI
You can improve DTI two ways: reduce monthly debt or increase income. Paying off a small loan or credit-card balance removes that monthly payment entirely and can move your ratio quickly. Avoid taking on new debt — like financing a car — in the months before applying for a mortgage.
Front-end vs back-end
Lenders sometimes look at two versions: the front-end ratio (housing costs only) and the back-end ratio (all debt). Both should sit comfortably within their guidelines for the smoothest approval.
Check yours
Use the debt-to-income calculator to see your ratio and how much monthly room you have under 36%. If you're house-hunting, pair it with the home affordability calculator to see what price range fits.
Educational information only — not financial, tax, or investment advice.