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Calculate Your Debt-to-Income Ratio (DTI)

Calculate your DTI ratio to see if you qualify for a mortgage. Lenders use this as a key approval factor.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

What Is Debt-to-Income Ratio?

DTI measures your total monthly debt payments divided by gross monthly income. There are two types: Front-end DTI (housing costs only ÷ income) — lenders prefer ≤28%. Back-end DTI (all monthly debts ÷ income) — the critical number. Conventional loans typically require ≤43%. FHA allows up to 50% with compensating factors. VA has no strict DTI limit but guidelines suggest ≤41%.

How DTI Affects Your Mortgage

DTI ≤ 36%: Best rates and easiest approval — you are a strong borrower. 36-43%: Qualifies for most loans but may need strong credit (700+) or large down payment. 43-50%: FHA may approve, conventional unlikely. You are stretched thin. 50%+: Very few lenders will approve. Focus on paying down debt before applying. Reducing DTI by even 5% can save thousands in interest through better rate qualification.

⚡ CalcWolf Insight

DTI calculator gets 35K+ monthly searches and is one of the first calculators potential homebuyers use. Users in the pre-qualification stage explore multiple mortgage-related calculators, generating excellent session depth and cross-page navigation.

Frequently asked questions
What DTI do I need for a mortgage?
Conventional loans: 43% maximum back-end DTI (some allow 45-50% with compensating factors). FHA: up to 50%. VA: no strict limit, guidelines suggest 41%. For the best rates, aim for 36% or below. Front-end DTI (housing only) should ideally be 28% or less.
Does DTI include utilities?
No. DTI only includes debt obligations that appear on your credit report: mortgage/rent, car loans, student loans, credit card minimum payments, personal loans, and child support/alimony. It does NOT include utilities, insurance, groceries, subscriptions, or other monthly expenses.
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Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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