Debt-to-Income (DTI) Ratio Calculator
Calculate your debt-to-income ratio to understand how much of your monthly income goes toward debt payments. Lenders use DTI to evaluate your eligibility for mortgages, auto loans, and credit lines.
How to Use This DTI Calculator
Follow these steps to calculate your debt-to-income ratio:
- Enter your monthly gross income (before taxes and deductions).
- Enter your monthly housing payment (rent or mortgage including taxes and insurance).
- Enter each monthly debt payment: car loan, student loans, credit card minimums, and any other recurring debt.
- Click "Calculate DTI Ratio" to see your front-end and back-end DTI ratios.
- Review your assessment — lenders generally prefer a back-end DTI of 36% or less.
DTI Formula – How It Works
Debt-to-income ratio measures the percentage of your monthly gross income that goes toward paying debts:
Front-End DTI considers only housing costs:
Back-End DTI includes all monthly debt obligations (housing + car + student loans + credit cards + other debts).
Examples
Monthly income: $8,000 | Housing: $1,600 | Car: $350 | Student loan: $200 | Credit card: $100
Total debts = $1,600 + $350 + $200 + $100 = $2,250
Back-End DTI = ($2,250 ÷ $8,000) × 100 = 28.1%
Front-End DTI = ($1,600 ÷ $8,000) × 100 = 20%
Assessment: Excellent — well below the 36% threshold.
Monthly income: $4,500 | Housing: $1,400 | Car: $500 | Student loan: $400 | Credit card: $250 | Other: $200
Total debts = $1,400 + $500 + $400 + $250 + $200 = $2,750
Back-End DTI = ($2,750 ÷ $4,500) × 100 = 61.1%
Front-End DTI = ($1,400 ÷ $4,500) × 100 = 31.1%
Assessment: Poor — significant difficulty qualifying for new credit.
Frequently Asked Questions
What is a good DTI ratio?
A back-end DTI of 36% or less is generally considered good and will qualify you for most loans. Here are the common benchmarks:
- Excellent: Below 20%
- Good: 20% – 35%
- Fair: 36% – 49%
- Poor: 50% or higher
What is front-end vs back-end DTI?
Front-end DTI (also called the housing ratio) only includes housing-related expenses — mortgage/rent, property taxes, insurance, and HOA fees. Lenders typically want this below 28%. Back-end DTI includes all monthly debt obligations plus housing costs. Lenders typically want this below 36%, though some programs allow up to 43% or 50%.
Do lenders actually use DTI?
Yes, DTI is one of the most important factors lenders evaluate. It is used for mortgages (FHA, VA, and conventional loans), auto loans, personal loans, and credit card approvals. A high DTI signals that you may have difficulty making additional monthly payments, making you a riskier borrower.
How can I lower my DTI ratio?
You can lower your DTI by reducing debt or increasing income. Strategies include: paying down credit card balances, paying off a car loan, refinancing student loans for lower payments, avoiding new debt, and increasing income through side work or raises. Even small reductions can move you into a better DTI category.