What Is a Good Debt-to-Income Ratio for a Mortgage?
Key takeaways
- DTI = total monthly debt payments ÷ gross monthly income × 100. It measures how much of your pay is already spoken for by debt.
- A good debt-to-income ratio for a mortgage is 36% or less. Up to 43% is generally the ceiling for qualified mortgages; some loan programs stretch to 50%.
- Lenders check two numbers: the front-end (housing) ratio and the back-end (total debt) ratio.
- Example: $2,000 in monthly debts on $6,500 of income = 30.8% — comfortably in the good range.
A good debt to income ratio for a mortgage is 36% or below. That’s the headline number most lenders want to see, though the full picture has a few more thresholds worth knowing. Your debt-to-income ratio (DTI) is simply the share of your gross monthly income that goes toward debt payments — and it’s one of the first numbers a lender calculates. It’s part of the personal finance basics every homebuyer should understand before applying.
What Is Debt-to-Income Ratio?
DTI compares what you owe each month to what you earn each month, before taxes. The formula:
DTI = (total monthly debt payments ÷ gross monthly income) × 100
Counted as debt: mortgage or rent, car loans, student loans, minimum credit card payments, child support and alimony, and any other installment debt.
Not counted: utilities, groceries, insurance premiums, income taxes, and subscriptions. Lenders care about fixed debt obligations, not your total cost of living.
Rather than doing it by hand, you can punch your numbers into our debt-to-income calculator and get both ratios instantly.
How to Calculate Your DTI: A Worked Example
Take a borrower with $6,500 in gross monthly income and these debts:
- Mortgage payment: $1,400
- Car loan: $350
- Student loans: $250
Total monthly debts: $2,000.
DTI = ($2,000 ÷ $6,500) × 100 = 30.8%. That’s under the 36% ideal threshold — this borrower looks solid to most lenders. To see what payment that income can support, run the numbers through our mortgage calculator, and read our guide on how much house you can afford.
What Is a Good Debt-to-Income Ratio for a Mortgage?
| DTI | What lenders think |
|---|---|
| 36% or less | Ideal — the comfort zone for most lenders and the best rates |
| 37–43% | Acceptable — 43% is generally the ceiling for qualified mortgages |
| 44–50% | Difficult — only some loan programs will go this high, often with stricter terms |
These are general guidelines, not laws of physics — individual lenders set their own cutoffs, and strong credit or large cash reserves can stretch them. But 36% is the number to aim for if you want the widest choice of loans at the best rates.
Front-End vs. Back-End DTI
Lenders actually calculate two ratios. The front-end (housing) ratio counts only housing costs — mortgage principal and interest, property tax, insurance, and HOA fees — divided by income. Lenders often like to see this at or below 28%.
The back-end ratio is the total DTI we’ve been discussing: all monthly debts divided by income. You can pass one and fail the other — for example, modest housing costs but heavy car and student-loan payments can sink the back-end ratio even when the front-end looks fine. When a lender quotes a single DTI number, they almost always mean the back-end one.
How to Lower Your DTI Before Applying
If your ratio is too high, you have two levers: shrink debts or grow income. Start at least three to six months before you plan to apply — DTI improvements show up as soon as the debts clear your credit report.
- Pay down (or off) small debts first. Eliminating a $250 monthly payment entirely moves the needle more than chipping at a large balance.
- Avoid new debt. Don’t finance a car or open new cards in the months before applying — lenders re-check.
- Raise your income on paper. A raise, bonus history, or documented side income counts if it’s stable and verifiable.
- Increase your down payment. Less borrowed means a smaller monthly payment, which directly lowers the front-end ratio.
- Consider a cheaper target. Sometimes the fastest fix is adjusting the home price, not your finances — a 10% lower price can move both ratios several points.
Explore more tools in our financial calculators collection.
FAQs
What DTI do I need for a conventional mortgage?
Conventional lenders prefer 36% or less, which gets you the best rates and the widest choice of loans. Some will approve up to 43–45% if you have strong compensating factors like excellent credit, large cash reserves, or a big down payment.
Do utilities, groceries, and insurance count in DTI?
No. DTI only includes fixed debt obligations — mortgage/rent, car loans, student loans, minimum credit card payments, child support, and similar. Day-to-day living costs like utilities, groceries, and insurance premiums are excluded from the calculation.
Can I get a mortgage with a 50% DTI?
It’s possible but difficult. A few loan programs — typically government-backed ones — allow DTIs up to 50% for well-qualified borrowers. Expect stricter scrutiny, higher rates, and fewer options than you’d get at 36%.
What’s the difference between front-end and back-end DTI?
Front-end DTI counts only housing costs against your income (lenders often want ~28% or less). Back-end DTI counts all monthly debts (aim for 36% or less). Lenders evaluate both, and you need to clear each bar separately.
Will paying off my car loan meaningfully improve my DTI?
Yes — often dramatically. Removing an entire monthly payment cuts the numerator directly. On $6,500 of income, eliminating a $350 car payment drops DTI by over 5 percentage points, which can be the difference between approval tiers.