USAMortgage Debt-to-Income (Front & Back DTI)Finance & SalaryUS Mortgage Underwriting Debt-to-Income (DTI) Ratio Calculator
Calculate your Front-End Housing DTI (maximum 28% guideline) and Back-End Total Debt DTI (36% conventional / 43% QM / up to 50% FHA limit) for Fannie Mae, Freddie Mac, FHA, and VA home loan pre-approval.
Calculator Inputs
Live Real-TimeBack-End Total Debt-to-Income (DTI) Ratio
Front-End Housing DTI Ratio (%)
25.8 %
Monthly Debt Headroom Remaining (to stay under 43% DTI)
885 %
Detailed Calculation Breakdown
Calculation Methodology
Front-End DTI% = (Total Monthly Housing PITI / Gross Monthly Income) * 100. Back-End DTI% = ((Housing PITI + Auto Loans + Student Loans + Min Credit Cards) / Gross Monthly Income) * 100.
Important Legal & Educational Disclaimer
Lenders compare gross monthly income to minimum monthly recurring debt payments. Conventional loans prefer total DTI under 43% (up to 45-50% with automated underwriting approval).
This calculator is designed for educational and informational purposes only based on public statutory frameworks. The outputs do not constitute binding financial, tax, or legal advice. We assume no liability for decisions made based on these estimations. Always verify with the relevant official authorities or a certified professional advisor.
Frequently Asked Questions
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