FinanceUpdated May 2026

Debt-to-Income (DTI) Ratio Calculator

Find your debt-to-income ratio for mortgage qualification, including front-end and back-end DTI.

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Updated 2026

DTI Calculator

Use this free DTI calculator to find your debt-to-income ratio. Lenders use DTI to decide if you qualify for a mortgage or other loan.
Your Numbers
Monthly amounts

Housing Costs

Other Debts

Enter Your Numbers

Calculate your DTI ratio and see where you stand with lenders

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How DTI Ratio Works

Front-End DTI (Housing Ratio)

Housing costs only: mortgage + property tax + insurance. Lenders prefer ≤ 28%.

Back-End DTI (Total DTI)

All debt payments: housing + car + student loans + credit cards + other. Most loans require ≤ 43%.

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How our DTI calculator works

1

Enter gross monthly income

Type your total monthly gross income before taxes. Include base salary, bonuses, commissions, and any other regular income.

2

Add your monthly debts

Enter housing (rent or mortgage payment), auto loans, student loans, credit card minimums, and any other monthly debt payments.

3

Get your front-end and back-end DTI

Front-end DTI = housing / income. Back-end DTI = all debts / income. Most lenders want back-end DTI under 36%; FHA loans allow up to 43%.

Key things to know about our dti calculator:

  • DTI benchmarks: Under 36% is ideal. 36-43% is acceptable for most mortgages. Above 43% is hard to qualify for conventional loans. FHA allows 50% DTI in some cases.
  • Improve DTI: Pay down credit cards (most effective), avoid new loans, refinance high-rate debt, or increase income. Improving DTI takes months, not weeks.
  • Not the only factor: Lenders also consider credit score, down payment, employment history, and reserves. DTI is one of several factors in mortgage qualification.

For related calculations, try our mortgage calculator.

Verified accuracy

Cross-checked against authoritative formulas (IRS, NIST, ACM) and updated for 2025/2026 tax years and rates.

Instant results

No server roundtrip. All math runs in your browser so results appear the moment you finish typing.

Your data stays private

We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.

Learn as you calculate

Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.

Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.

Debt-to-Income (DTI) Ratio Calculator - Free | CalcCentral