Is a lower DTI always better?

For loan qualification purposes, yes — a lower DTI signals more capacity to take on new debt. Outside of qualifying for a loan, DTI is just one financial health signal among many, not a target to minimize for its own sake.

Why does this show two different percentages?

Front-end DTI isolates housing costs alone, which some loan programs (like VA) don't check separately; back-end DTI includes all debt and is the figure most lenders weigh most heavily for approval.

Is the 43% figure still a hard legal limit?

No — the CFPB's General QM rule dropped the strict 43% DTI cap in 2021 in favor of a price-based test. It's still commonly cited as a rough ceiling many lenders use in practice, but it isn't a universal legal requirement anymore.

What if my income is $0?

Both ratios show as 0% rather than an undefined division-by-zero result — a $0-income scenario isn't a meaningful DTI calculation in practice, so treat that case as a placeholder rather than a real result.

Does this calculator check my credit score?

No — it computes DTI only. Actual loan approval depends on DTI combined with credit score, employment history, cash reserves, and other underwriting factors this calculator doesn't model.

Can DTI include a spouse's or co-borrower's income and debt?

This calculator models one applicant's figures at a time. For a joint application, combine both incomes and both sets of debt payments before entering them, matching how a lender would typically evaluate a joint DTI.

Does paying off a loan early help my DTI immediately?

Yes, once the payment stops being reported — a fully paid-off loan no longer counts as a monthly obligation, which directly lowers your back-end DTI the next time it's calculated.

Is rent counted the same way as a mortgage payment?

Yes, for front-end DTI purposes rent is treated the same as a mortgage's principal, interest, tax, and insurance combined — both represent your monthly housing cost.

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Finance

Debt-to-Income Ratio Calculator

Your DTI ratio against real mortgage-lending thresholds.

🔒 Runs entirely in your browser — nothing here is ever uploaded

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Last reviewed 2026-08-29

About the Debt-to-Income Ratio Calculator

Calculates your debt-to-income (DTI) ratio — both the front-end ratio (housing costs only) and back-end ratio (all recurring debt) — and shows how it compares to the guidelines lenders commonly use for conventional, FHA, and VA loans.

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How to use it

Enter your Gross monthly income (before tax).
Enter your Monthly housing payment — rent, or mortgage principal, interest, tax, and insurance combined.
Enter your Other monthly debt payments — car loans, student loans, minimum credit card payments, and similar recurring obligations.
Read your front-end and back-end DTI ratios, and where they stand against common lending guidelines, in the result panel.

Formula

Front-end DTI = monthly housing payment ÷ gross monthly income × 100
Back-end DTI = (monthly housing payment + other monthly debt payments) ÷ gross monthly income × 100

Worked example

$6,000 gross monthly income, a $1,500 monthly housing payment, and $500 in other monthly debt: a 25.0% front-end ratio and a 33.3% back-end ratio — comfortably within the conventional-loan 28/36 guideline.

Common DTI guidelines by loan type (front-end / back-end)

Common DTI guidelines by loan type (front-end / back-end)
Loan type	Front-end (housing)	Back-end (total debt)
Conventional (28/36 rule)	28%	36% (up to ~45% with strong credit)
FHA	31%	43% (stretch ratios of 33/45 available via Energy Efficient Mortgage)
VA	No separate front-end limit	41% single combined threshold

Interpreting your result

These are lender guidelines and conventions, not a single universal legal cap. The Consumer Financial Protection Bureau's General Qualified Mortgage rule used a strict 43% DTI limit until it was formally removed in 2021 and replaced with a price-based (loan pricing) test — so a 43% figure is still widely cited as a rough conventional/FHA reference point, but it is no longer a hard regulatory ceiling for most conventional loans. Actual approval always depends on the specific lender and loan program.

Recommendations

• Lenders weigh DTI alongside credit score, credit history, and cash reserves — a higher DTI with excellent credit and reserves can still qualify, while a lower DTI with other red flags might not automatically approve.
• Paying down even one recurring debt (a car loan or a credit card balance) can meaningfully lower your back-end DTI, since it comes straight off the numerator every month going forward.
• DTI uses gross (pre-tax) income, not take-home pay — don't substitute your net paycheck amount, which would understate your actual ratio.

Frequently asked questions

Recurring, reported debt obligations — housing, car loans, student loans, minimum credit card payments, personal loans, alimony or child support. It generally doesn't include everyday living expenses like groceries, utilities, or insurance premiums that aren't tied to a debt obligation.