Why lenders lean on DTI
DTI is a fast proxy for how much financial cushion you have. A low ratio means most of your income is free for savings, emergencies and new debt; a high ratio means a large share is already spoken for, leaving little room if income drops or costs rise. That is why it weighs heavily in mortgage, auto and personal loan approvals.
Improving your DTI
You can move DTI from either side: pay down or consolidate existing debt, or grow your income. Paying off a car loan or credit card balance often moves the needle faster than it seems, since it removes a whole recurring payment rather than just shrinking one. See how much house your current DTI supports with the Mortgage Affordability Calculator.
Frequently asked questions
What is debt-to-income (DTI) ratio?
DTI is the share of your gross monthly income that goes toward debt payments — housing, car loans, student loans, credit cards and other recurring debt. Lenders use it as a core measure of how much more debt you can safely handle.
What is a good DTI ratio?
Under 36% is generally considered healthy, 36–43% is a caution zone where some lenders get stricter, and above 43% is high — many mortgage programs cap around there. Lower is always safer for your own budget, regardless of what a lender allows.
What counts as debt for this calculation?
Recurring debt payments: rent or mortgage, car loans, minimum credit card payments, student loans and any other loan payments. It does not include everyday expenses like groceries, utilities or subscriptions.
What is the difference between front-end and back-end DTI?
Front-end DTI counts only housing costs against income. Back-end DTI (what this calculator shows) counts all debt payments, including housing — it is the number most lenders weight most heavily.
Last updated: June 2026