Debt-to-Income (DTI) Ratio Calculator

Calculate your DTI ratio to check if you meet HELOC lender requirements.

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Mortgage, Rent, Property Tax, HOA

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Credit Cards, Car Loans, Student Loans

Understanding Debt-to-Income (DTI) Ratio

Your Debt-to-Income (DTI) ratio is a key metric lenders use to assess your ability to manage monthly payments. It compares your total monthly debt obligations to your gross monthly income.

DTI Requirements for HELOCs

  • Below 36% DTI: Excellent - best rates and easy approval
  • 36-43% DTI: Good - most lenders will approve
  • 43-50% DTI: Challenging - limited lender options
  • Above 50% DTI: Very difficult to qualify

Front-End vs. Back-End DTI

Front-End DTI: Only housing-related expenses (mortgage, insurance, taxes) divided by income.
Back-End DTI: All debt payments (housing + credit cards + loans + HELOC) divided by income.

Lenders typically focus on back-end DTI when evaluating HELOC applications.

How to Improve Your DTI

  • Pay off high-interest credit cards and personal loans
  • Increase your income through raises, bonuses, or side work
  • Avoid taking on new debt before applying
  • Consider a co-borrower with additional income

What Counts as Debt?

  • Mortgage payments (principal, interest, taxes, insurance)
  • Credit card minimum payments
  • Auto loans and leases
  • Student loans
  • Personal loans
  • Child support and alimony

Expert Tips for Smart Borrowing

✂️Pro Tip

Pay Off Small Debts

Before applying, pay off small monthly debts like a $50/mo store card. Eliminating a monthly payment helps DTI more than paying down a large loan partially.

📑Pro Tip

Boost Income on Paper

Ensure all income is documented. Bonuses, overtime, and side-hustle income often need a 2-year history to be counted by underwriters.

🛑Pro Tip

Avoid New Debt

Do NOT buy a car or furniture before your HELOC closes. A new monthly payment showing up on your credit report can kill the deal instantly.

🤝Pro Tip

Co-Borrower Power

Straddling the line? Adding a spruce or partner as a co-borrower can double the income used in the calculation, slashing your DTI ratio.

Frequently Asked Questions

Ideally, you want your back-end DTI (all monthly debts + mortgage + new HELOC) to be under 43%. Some lenders will stretch to 50% for borrowers with excellent credit scores (760+), but 43% is the industry 'safe zone'.
No! Debt-to-Income is calculated using your GROSS (pre-tax) income, and 401k contributions are not considered monthly debt payments. Only obligations like loans, credit cards, mortgages, and alimony count.
Lenders look at your minimum monthly payments as reported on your credit report, not your total balance. However, if you are a 'transactor' who pays in full every month, the minimum payment still counts against you.
Yes, usually. Lenders will typically count 75% of your gross rental income (to account for vacancies/maintenance) and add it to your income, which helps lower your DTI ratio.
DTI looks at obligations, not cash. If you have five car loans and huge student debt, your DTI is high even if you have money left over. Lenders fear that one hiccup in income will cause you to default because your fixed costs are so high.