Phase 4 · General Utility
Debt-to-Income Ratio Calculator
Before your credit score, lenders look at this. Calculate your front-end and back-end DTI, see the lending tier you land in, and exactly how much monthly debt room you have left.
Under the hood
The math, fully exposed
Two ratios from the same income — one housing-only, one all-in:
Front-end DTI = housing payment ÷ gross monthly income
Back-end DTI = (housing + other debts) ÷ gross monthly income
Room before 43% = 43% × income − total debt payments
Tiers: ≤36% ideal · 37–43% workable · >43% cautious
- Back-end is the one lenders weigh: it captures every obligation, which is why a single extra loan can tip a borderline application.
- Gross, not net: DTI uses pre-tax income — the same figure underwriters use, so your real spendable ratio is higher.
- Removing a payment beats shrinking one: clearing a whole loan drops the ratio in a step, faster than trimming a large balance.
Your directives
What to do next, based on your numbers
Adjust the sliders to generate tailored recommendations.
Answers
Frequently asked questions
What is a debt-to-income ratio?
DTI is the share of your gross monthly income that goes to debt payments. There are two versions: the front-end ratio counts only housing (rent or mortgage, taxes, insurance), and the back-end ratio counts all debt — housing plus car loans, student loans, and minimum credit-card payments. Lenders lean on the back-end ratio to decide how much they will lend, often before they even look at your credit score.
What is a good debt-to-income ratio?
For the back-end ratio: 36% or below is comfortable and opens the best loan terms; 37–43% is workable but tighter, and 43% is the usual ceiling for a qualified mortgage; above 43% most lenders get cautious, and above 50% borrowing becomes very hard. For the front-end (housing) ratio, 28% or less is the classic target. Lower is always safer — it leaves room to save and absorb shocks.
Which debts count and which do not?
Count the minimum monthly payments on debts: mortgage or rent, auto loans, student loans, personal loans, and credit-card minimums. Do not count utilities, insurance (other than what is escrowed with a mortgage), groceries, taxes withheld, or subscriptions — those are expenses, not debt obligations. Use gross (pre-tax) income, since that is what lenders use.
How do I lower my DTI to qualify for a loan?
Two levers: reduce monthly debt payments or raise income. Paying off a small loan or a card can remove a whole payment from the ratio quickly — often more effective than chipping at a large balance. Avoid taking on new debt (like financing a car) right before a mortgage application, since it directly raises your back-end ratio. This is an educational model, not financial advice.