A good debt-to-income ratio is a back-end ratio of 36% or under: housing plus every other monthly debt payment, divided by gross monthly income. On $7,500 of gross monthly income with $1,850 of housing costs and $620 of other monthly debts, the back-end ratio is $2,470 ÷ $7,500 = 32.93% — inside the healthy band, with $230 a month of room under the 36% guide. The front-end ratio, housing alone, is $1,850 ÷ $7,500 = 24.67%, under the 28% housing guide.
The tool recommended here — Asad Webs' free Debt-to-Income Ratio Calculator — works out both ratios from your gross income, housing costs and other monthly debts, labels each with its band, and shows the maximum housing payment at 28% and maximum total debts at 36% for your income. It runs in your browser, free, with no sign-up.
Try it now: Debt-to-Income Ratio Calculator — Front-End and Back-End DTI With Lender Bands. Enter your gross income and monthly payments and see both ratios, their bands, and the room left under 36%.
The two ratios lenders actually check
Lenders look at two numbers, not one. The front-end ratio is monthly housing costs divided by gross monthly income: it asks whether this income can carry this home. The back-end ratio is housing plus every other monthly debt payment, divided by the same gross income: it is the fuller picture, and the one that usually decides the application. A borrower can pass the front-end test and still fail the back-end one because of a car loan or card minimums — which is why lenders quote both.
Both use gross income — before tax and deductions — because that is what lenders use. If you only know your annual salary, divide by 12. Using take-home pay instead would make your ratios look worse than a lender would calculate them.
The worked example: $7,500 a month of gross income
Gross monthly income of $7,500. Housing costs of $1,850 — mortgage $1,450, property taxes $200, home insurance $125 and HOA dues $75. Other monthly debts of $620 — car loan $320, card minimums $150 and student loan $150. Front-end: $1,850 ÷ $7,500 = 24.67%. Back-end: ($1,850 + $620) ÷ $7,500 = $2,470 ÷ $7,500 = 32.93%. The guide limits on this income are housing of 28% × $7,500 = $2,100 and total debts of 36% × $7,500 = $2,700, leaving $2,700 − $2,470 = $230 a month of room under 36%.
| Figure | Amount | Against the guide |
|---|---|---|
| Gross monthly income | $7,500 | — |
| Housing costs | $1,850 | 24.67% vs 28% guide — $250 of room |
| Other monthly debts | $620 | Car $320, cards $150, student loan $150 |
| All monthly debts | $2,470 | 32.93% vs 36% guide — $230 of room |
Ratios on $7,500 gross income vs the guide limits
The bands: what counts as good
Lenders commonly quote the same bands for the back-end ratio. These are general guidance, not a lending decision — cut-offs vary by lender, loan type and the rest of your application — but they are the scale every borrower should know.
| Back-end DTI | Band | What it usually means |
|---|---|---|
| 36% or under | Generally healthy | Debt payments sit comfortably inside income for most lenders. |
| 37% – 43% | Workable | Often still approvable, especially with a strong credit profile or savings. |
| 44% – 49% | Tight | Many lenders push back here; paying a debt down can move you a band. |
| 50% or over | High | Half or more of gross income is committed before living costs — most lenders decline. |
Housing alone is commonly compared with a 28% guide. A front-end ratio far above 28% is a warning even when the back-end ratio looks fine, because housing is the payment that cannot shrink in a tight month.
Paying off a small debt completely is the fastest lever: its whole monthly payment leaves the ratio, not just part of the balance. Clearing a $150-a-month card minimum moves a $7,500-income back-end ratio by a full two points — the same effect as a $150 raise.
What counts as a debt — and what does not
Any required monthly payment on money you owe counts: mortgage or rent (with taxes, insurance and HOA for housing), car loans, student loans, credit-card minimum payments, personal loans, child support and similar obligations. For credit cards it is the minimum payment that counts, not the full balance. Everyday bills — utilities, groceries, phone, subscriptions — do not count, even though they matter for your budget.
One counting trap: if taxes or insurance are bundled into your mortgage payment through escrow, count them once — either inside the payment or as their own lines, not both. Double-counting escrowed taxes inflates the front-end ratio by several points for no reason.
How to lower your DTI before you apply
First, pay off a small debt completely — the whole payment disappears from the ratio. Second, avoid new finance before applying: a new car loan taken out weeks before a mortgage application lands directly in the back-end ratio. Third, for credit cards, pay the balance down, since the minimum payment usually falls with it. Fourth, do not close old cards to do it — closing a card can change the utilisation side of your credit profile. A higher income helps too, but lenders generally need it documented, so a raise that has not yet appeared on a payslip may not count yet.
The 28/36 rule is a long-standing underwriting guideline, not a law. Many modern loan programmes approve back-end ratios above 36%, sometimes above 45%, when other factors are strong — a large deposit, a long stable employment history, or substantial savings. The calculator shows the 28% and 36% figures as reference limits so you can see where you stand against the classic benchmark, not as a pass-or-fail verdict.
Related guides
If the ratio is tight because of card debt, compare the paths in is a balance transfer card worth it, work the payoff plan in how to pay off debt faster, and rebuild the habit with a monthly budget that sticks.
Frequently Asked Questions
What is a good debt-to-income ratio?
As general guidance, a back-end DTI of 36% or under is the range most lenders call healthy, 37–43% is workable, 44–49% is tight and 50% or over is high. Housing alone (the front-end ratio) is commonly compared with a 28% guide.
What is the difference between front-end and back-end DTI?
Front-end is housing costs only, divided by gross monthly income. Back-end is housing plus every other monthly debt payment, divided by the same income. Lenders quote both; you can pass the front-end test and still fail the back-end one.
Do I use gross or net income for DTI?
Gross — income before tax and deductions — because that is what lenders use. Using take-home pay instead would make your ratios look worse than a lender would calculate them.
What counts as a debt in DTI?
Any required monthly payment on money you owe: mortgage or rent with taxes, insurance and HOA, car loans, student loans, credit-card minimum payments, personal loans and child support. Everyday bills — utilities, groceries, phone, subscriptions — do not count.
How do I lower my DTI quickly?
Pay off a small debt completely so its whole monthly payment leaves the ratio, avoid new finance before applying, and pay card balances down so the minimum payments fall. A higher income helps but lenders generally need it documented.
Is the 28/36 rule a law?
No — it is a long-standing underwriting guideline, not a regulation. Many modern loan programmes approve back-end ratios above 36%, sometimes above 45%, when other factors are strong.
Check your own ratios with the free Debt-to-Income Ratio Calculator, then talk to Asad Webs about tools and websites that help your business plan the same way.
Sources: Asad Webs Debt-to-Income Ratio Calculator tool page (front-end and back-end definitions, lender bands, worked example, 28/36 guide limits — verified live 2026-11-06). All figures are the article's own worked example on $7,500 gross monthly income: housing $1,450 + $200 + $125 + $75 = $1,850; other debts $320 + $150 + $150 = $620; front-end 24.67%; back-end 32.93%; limits $2,100 and $2,700; room $230. Bands are general guidance, not a lending decision.
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