Debt-to-Income Ratio Guide — What Lenders Look For

What Is Debt-to-Income Ratio (DTI)?

Your DTI is the percentage of your gross monthly income that goes toward debt payments. Lenders use this to gauge your ability to take on new debt without becoming overextended.

Formula: (Monthly debt payments ÷ Gross monthly income) × 100 = DTI%

Example: $2,500 total monthly debts ÷ $8,000 gross monthly income = 31.25% DTI.

What Debts Are Included?

• Mortgage or rent payment
• Car loans
• Student loans
• Credit card minimum payments
• Personal loans
• Child support or alimony
• Any other installment debt

Do NOT include: utilities, groceries, insurance premiums, cell phone bills, or health insurance — these are living expenses, not debt.

DTI Tiers and What They Mean

• Below 20% — Excellent: You have significant room for additional debt. Lenders love this range.
• 20% to 35% — Good: Most borrowers fall here. You likely qualify for most loans.
• 36% to 43% — Fair: You may still qualify but may face higher rates or require a larger down payment.
• 44% to 50% — Borderline: Many conventional lenders will decline unless you have strong compensating factors.
• Above 50% — Very High: Qualifying for new credit is difficult. Focus on debt reduction before applying.

Front-End vs. Back-End DTI

For mortgages specifically, lenders look at two ratios:

• Front-end DTI (housing ratio): Only housing costs (mortgage, taxes, insurance, HOA) divided by income. Should ideally be under 28%.
• Back-end DTI (total debt ratio): All debt payments (housing + other debts) divided by income. Should ideally be under 36% for conventional loans.

How to Improve Your DTI

• Pay down credit card balances: Reducing the balance lowers the minimum payment.
• Pay off small debts entirely: Eliminating a car loan or student loan removes that whole monthly payment.
• Increase your income: A raise, second job, or side hustle increases the denominator.
• Avoid new debt before applying: Financing a car or opening new credit cards increases your monthly obligations.
• Extend loan terms (for existing debt): Refinancing to a longer term reduces the monthly payment, improving DTI.