Your debt-to-income ratio (DTI) is one of the most important numbers lenders look at when you apply for a mortgage, car loan, or credit card. Understanding your DTI — and how to improve it — can save you thousands in interest rates.
What Is DTI?
DTI compares your total monthly debt payments to your gross monthly income. It tells lenders how much of your income is already committed to debt — and therefore how much risk you represent.
DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100
Use gross income (before taxes), not take-home pay.
Example Calculation
Monthly debts: mortgage $1,400 + car loan $350 + student loan $200 + credit card minimums $150 = $2,100
Gross monthly income: $6,500
DTI = ($2,100 ÷ $6,500) × 100 = 32.3%
What Is a Good DTI Ratio?
| DTI Range | Rating | Lender View |
|---|---|---|
| Below 20% | Excellent | Very low risk, best rates |
| 20%–35% | Good | Manageable debt load |
| 36%–43% | Acceptable | Conventional mortgage limit |
| 44%–50% | High | FHA/VA loans only, tough |
| Above 50% | Too High | Most lenders decline |
Front-End vs Back-End DTI
Mortgage lenders use two DTI calculations:
- Front-End DTI — Only housing costs (mortgage payment + taxes + insurance) ÷ income. Ideal: below 28%.
- Back-End DTI — All monthly debts ÷ income (what most people mean by DTI). Ideal: below 36%.
How to Lower Your DTI
- Pay down high-balance debts — Focus on the accounts with the highest minimum payments (not necessarily highest interest).
- Avoid new debt — Don’t take out new loans or open credit cards before applying for a mortgage.
- Increase income — Side income, raises, or rental income all count toward gross monthly income.
- Pay off or consolidate student loans — Income-driven repayment plans can lower your minimum payment.
- Remove co-signed debt — If a co-signed loan is no longer needed, have the primary borrower refinance without you.
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