Skip to content
CalcWolf Finance Debt-to-Income (DTI) Ratio Calculator
Finance

Calculate Your DTI Ratio

Calculate your debt-to-income ratio — the key number mortgage lenders use to determine how much you can borrow.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

What Is DTI?

Debt-to-Income ratio compares your monthly debt payments to your gross monthly income. Front-end DTI includes only housing costs (mortgage, property tax, insurance, HOA). Back-end DTI includes all debts (housing + car + student loans + credit cards + other). Lenders use back-end DTI as the primary qualification metric.

DTI Requirements by Loan Type

Conventional: Max 43-45% back-end DTI, 28% front-end. FHA: Max 50% with compensating factors (high credit score, reserves). VA: No hard cap but 41% is the guideline. Jumbo: Typically 36-43% max. The lower your DTI, the better your rate and the more loan options available. Below 36% gets you the best terms.

⚡ CalcWolf Insight

The single most impactful DTI improvement: pay off credit card balances. Credit cards have the highest minimum payment relative to balance of any debt type. Paying off $5,000 in credit card debt eliminates roughly $150/month in minimum payments — a 2-3% DTI improvement on a typical income.

Frequently asked questions
What is a good DTI ratio?
Below 36% is considered good. Below 28% is excellent. 36-43% is acceptable for most loans. Above 43% limits your options significantly. Most lenders consider 43% the maximum for Qualified Mortgages under federal guidelines.
How do I lower my DTI?
Two approaches: reduce debts (pay off credit cards, refinance car to lower payment) or increase income (raise, side income, adding a co-borrower). Paying off a $300/month car payment reduces DTI by 4.3% on a $7,000 income — often enough to qualify for a mortgage.
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
🐛 Report a Calculator Error
Found a bug or outdated data? Reports go directly to Kevin and are reviewed personally.