How to Calculate Your Debt-to-Income (DTI) Ratio: A Complete Guide

How to Calculate Your Debt-to-Income (DTI) Ratio: A Complete Guide

By Michael Thornton

March 6, 2025 at 10:39 PM

Debt-to-income (DTI) ratio represents your monthly debt payments divided by your gross monthly income, expressed as a percentage. This financial metric helps lenders evaluate your ability to manage monthly payments and repay debts.

How to Calculate DTI

Use this simple formula: (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100 = DTI%

Example: If you pay $1,800 in monthly debts and earn $6,000 monthly before taxes, your DTI is 30% ($1,800 ÷ $6,000) × 100 = 30%

Include These Monthly Debt Payments:

  • Rent or mortgage
  • Auto loans
  • Student loans
  • Credit card minimums
  • Personal loans
  • Home equity payments
  • Court-ordered payments (child support, alimony)

Don't Include Regular Expenses:

  • Groceries
  • Utilities
  • Insurance
  • Phone bills
  • Child care
  • Entertainment
  • Transportation costs

Count All Income Sources:

  • Full-time salary
  • Part-time wages
  • Freelance income
  • Bonuses
  • Child support/alimony received
  • Social security benefits
  • Rental income

Understanding Your DTI Ratio

Less than 36%: Healthy debt level; good chances for loan approval 36-42%: Moderate concern; may face lending restrictions 43-50%: High risk; limited borrowing options Over 50%: Critical level; consider debt relief options

Impact on Lending

  • Lenders use DTI to assess borrowing risk
  • Each lender sets unique DTI requirements
  • Personal loans may allow higher DTI than mortgages
  • DTI doesn't affect credit scores

How to Lower Your DTI

  1. Increase Income:
  • Start a side hustle
  • Sell unused items
  • Take on additional work
  1. Reduce Debt:
  • Pay down credit card balances
  • Clear installment loans
  • Avoid new debt
  1. Restructure Debt:
  • Refinance at lower rates
  • Consolidate multiple debts
  • Negotiate payment terms

Remember: Keep your DTI as low as possible to maintain financial health and ensure better lending options in the future.

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