Your debt-to-income ratio (DTI) is one of the most important numbers in your financial life. It determines whether you qualify for a mortgage, what interest rate you’ll get, and how much you can borrow.
Table of Contents
What Is a Good DTI Ratio?
| DTI Range | Rating | Mortgage Impact |
|---|---|---|
| Under 20% | Excellent | Best rates, easy approval |
| 20-35% | Good | Approval likely, competitive rates |
| 36-43% | Acceptable | Conventional loan limit |
| 44-49% | High | FHA may approve, limited options |
| 50%+ | Very High | Difficult to get approved for any mortgage |
How to Calculate Your DTI
DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100
What Counts as Debt
| Included in DTI | NOT Included in DTI |
|---|---|
| Mortgage / rent (for housing DTI) | Utilities |
| Car payments | Groceries / food |
| Student loan payments | Health insurance |
| Credit card minimum payments | Car insurance |
| Personal loan payments | Cell phone bill |
| Child support / alimony | Subscriptions |
| Other loan payments | 401k contributions |
DTI Calculation Examples
| Scenario | Monthly Debts | Gross Income | DTI |
|---|---|---|---|
| Young professional | $800 (rent + student loan) | $5,000 | 16% |
| Homeowner with car | $2,200 (mortgage + car + cards) | $7,500 | 29% |
| Family with multiple debts | $4,000 (mortgage + cars + student loans) | $10,000 | 40% |
| Stretched buyer | $3,500 (mortgage + debts) | $7,000 | 50% |
Front-End vs Back-End DTI
Lenders look at two types of DTI:
| Type | What It Measures | Ideal Limit |
|---|---|---|
| Front-end (housing) DTI | Housing costs only (mortgage, insurance, taxes) | 28% or less |
| Back-end (total) DTI | All debt payments combined | 36% or less |
The common guideline is the 28/36 rule: spend no more than 28% on housing and 36% on total debt. For more on how this works with your income, see our mortgage affordability calculator.
DTI Requirements by Loan Type
| Loan Type | Maximum DTI | Notes |
|---|---|---|
| Conventional | 43% (sometimes 50% with compensating factors) | Best rates under 36% |
| FHA | 43% standard, up to 50% with strong factors | More flexible for lower scores |
| VA | 41% guideline, no hard limit | Residual income also considered |
| USDA | 41% | Geographic restrictions apply |
| Jumbo | 36-43% | Stricter requirements |
Average DTI in America
| Metric | Value |
|---|---|
| Average American DTI | 37% |
| Median DTI for mortgage applicants | 34% |
| Average DTI for approved mortgages | 38% |
| Applicants denied for high DTI | 25% of denials |
| Average mortgage payment as % of income | 27% |
How to Lower Your DTI
| Strategy | Impact | Timeframe |
|---|---|---|
| Pay off credit cards | Reduces monthly minimums | 1-12 months |
| Refinance to lower payment | Extends term to lower monthly payment | 1-2 months |
| Increase income (side hustle, raise) | Lowers DTI percentage | Varies |
| Pay off car loan | Eliminates a large monthly payment | Immediate if paid off |
| Avoid new debt before applying | Prevents DTI from increasing | Ongoing |
| Pay off debt strategically | Focus on highest monthly payments first | 3-12 months |
DTI and Your Mortgage Rate
Your DTI directly affects the interest rate you’re offered:
| DTI | Approximate Rate Impact |
|---|---|
| Under 30% | Best available rates |
| 30-36% | +0.00-0.125% |
| 36-43% | +0.125-0.375% |
| 43-50% | +0.375-0.75% (if approved) |
On a 30-year mortgage, even a 0.25% higher rate costs thousands over the life of the loan.
Bottom Line
Your DTI ratio is a critical factor in your financial health — not just for mortgage approval, but as a measure of how stretched your budget is. Aim to keep your total DTI below 36%, and if you’re above 43%, make debt reduction a priority before applying for a mortgage.
For more on debt management, see our guides on debt payoff strategies and the debt-to-income ratio explained.
