Debt-to-Income Calculator
Calculate your DTI ratio to assess loan eligibility and financial health.
Monthly Income
Housing Costs
Other Debts
Back-End DTI Ratio
33.8%
good standing
DTI Guidelines
What is Debt-to-Income Ratio?
The debt-to-income ratio (DTI) compares your monthly debt payments to your gross monthly income. Lenders use DTI to evaluate your ability to manage monthly payments and repay borrowed money.
Two types of DTI:
- Front-end DTI: Housing costs only / Gross income
- Back-end DTI: All debt payments / Gross income
Why DTI matters:
- Primary factor in mortgage approval
- Affects loan rates and terms offered
- Indicates financial health
- Guides borrowing decisions
Lower DTI = less risky borrower = better loan terms.
DTI Calculation
The standard debt-to-income calculation:
Debt-to-Income Ratio
Where:
- Monthly Debt= Total of all monthly debt payments
- Gross Income= Pre-tax monthly income
What Counts in DTI?
Include in debt payments:
- Rent or mortgage payment (PITI: principal, interest, taxes, insurance)
- Car loans
- Student loans
- Credit card minimums
- Personal loans
- Child support/alimony
- Other loan payments
NOT included:
- Utilities (electric, gas, water)
- Cell phone, internet, cable
- Groceries, food
- Health insurance
- Car insurance
- Gym memberships, subscriptions
Gross income includes:
- Salary/wages before taxes
- Bonuses and commissions (averaged)
- Rental income
- Alimony/child support received
- Investment income
How to Use This Calculator
Our DTI calculator determines your debt-to-income ratio:
- Enter Income:
- Gross monthly income (before taxes)
- Include all income sources
- Enter Debt Payments:
- Housing (rent/mortgage + taxes + insurance)
- Car payments
- Student loans
- Credit cards (minimum payments)
- Other debt payments
Results include:
- Front-end DTI (housing only)
- Back-end DTI (all debts)
- Qualification likelihood
- How much room for additional debt
DTI Guidelines by Loan Type
Conventional mortgages:
- Front-end: 28% or less ideal
- Back-end: 36% or less ideal
- Maximum: 43-45% (may require compensating factors)
FHA loans:
- Front-end: 31% guideline
- Back-end: 43% guideline
- Maximum: 50% with strong compensating factors
VA loans:
- No front-end limit
- Back-end: 41% guideline
- Uses residual income analysis too
Other loans:
- Personal loans: Often 35-40% max
- Auto loans: Varies by lender
- Credit cards: Consider in overall DTI
How to Improve Your DTI
Reduce debt payments:
- Pay off credit cards or loans
- Refinance to lower payments
- Consolidate high-rate debt
- Pay extra on principal
Increase income:
- Negotiate raise or promotion
- Add second job or side income
- Document all income sources
- Include rental or investment income
Avoid new debt:
- Don't open new credit accounts before applying
- Avoid large purchases on credit
- Keep credit card balances low
Worked Examples
Basic DTI Calculation
Problem:
Gross income: $6,000/month. Rent: $1,400. Car payment: $350. Student loans: $250. Credit cards: $100. Calculate DTI.
Solution Steps:
- 1Front-end (housing): $1,400 / $6,000 = 23.3%
- 2Total debt payments: $1,400 + $350 + $250 + $100 = $2,100
- 3Back-end DTI: $2,100 / $6,000 = 35%
- 4Both ratios are within conventional guidelines
- 5This borrower is well-positioned for a mortgage
Result:
Front-end DTI: 23.3%, Back-end DTI: 35%. Both are healthy ratios that should qualify for most loans.
Mortgage Qualification
Problem:
Income: $8,000/month. Current debts: $800/month. Want to buy home with $2,000/month PITI. Will they qualify?
Solution Steps:
- 1Current back-end DTI: $800 / $8,000 = 10%
- 2New housing payment: $2,000
- 3New front-end: $2,000 / $8,000 = 25%
- 4New back-end: ($800 + $2,000) / $8,000 = 35%
- 525% front-end < 28% guideline ✓
- 635% back-end < 36% guideline ✓
Result:
They qualify! Both front-end (25%) and back-end (35%) DTI are within conventional guidelines.
Maximum Affordable Payment
Problem:
Income: $5,500/month. Current debts: $600/month. Target DTI: 43% max. What's the maximum housing payment?
Solution Steps:
- 1Target total debt: $5,500 × 43% = $2,365
- 2Less current debts: $2,365 - $600 = $1,765
- 3Maximum housing payment: $1,765
- 4Conservative (36%): $5,500 × 36% - $600 = $1,380
- 5Range: $1,380 - $1,765 depending on risk tolerance
Result:
Maximum housing payment is $1,765 (at 43% DTI) or $1,380 (at conservative 36% DTI).
Tips & Best Practices
- ✓Calculate DTI before applying for loans to know where you stand
- ✓Use minimum payments for credit cards, not balances
- ✓Include all income sources you can document
- ✓Pay off small debts before applying to reduce DTI
- ✓Don't open new credit accounts before major applications
- ✓The 28/36 rule is a good target for financial health
- ✓Lower DTI = better rates and easier approval
Frequently Asked Questions
Sources & References
Last updated: 2026-01-22