Debt-to-Income (DTI) Calculator
Understand your housing and total debt ratios.
What this calculator helps you estimate
Debt-to-income (DTI) is the percentage of your gross monthly income that goes to debt payments. This calculator estimates your housing ratio and total DTI.
Lenders use DTI to gauge how comfortably a borrower can take on a new mortgage. Enter your income and monthly obligations to see where you stand today.
Inputs
Income & obligations
Results
Your debt-to-income
Interpretation
Generally viewed as a strong DTI profile.
Treatment of specific debts and income varies by loan program. This estimate does not guarantee or prevent approval.
Understand the math
How this calculator works
Debt-to-income (DTI) is the single ratio lenders lean on most heavily. This calculator produces both your housing (front-end) ratio and your total (back-end) ratio so you can see exactly where you stand against common underwriting thresholds before you apply.
Worked example
$7,500 gross monthly income; existing mortgage payment $2,000, car payment $450, minimum credit card payment $150, student loan $300.
- Front-end ratio = $2,000 ÷ $7,500 = 26.7%
- Total monthly debts = $2,000 + $450 + $150 + $300 = $2,900
- Back-end (total) DTI = $2,900 ÷ $7,500 = 38.7%
Front-end ratio ≈ 26.7%; total DTI ≈ 38.7%.
How to read your results
Interpretation guidance
- A front-end ratio near or under 28% is comfortable for many conventional guidelines, though limits vary by program.
- A total DTI under roughly 43% keeps you within range for many loan programs; some allow higher with strong compensating factors.
- Only minimum required payments count — not full balances — so paying down a card doesn't help DTI unless it changes the minimum payment or the loan is fully paid off.
- Adding a new mortgage payment on top of current debts is what a lender will actually test — model your prospective payment here too.
Deeper answers
More questions about this calculator
What is a good debt-to-income ratio for a mortgage?
Many programs comfortably allow total DTIs up to the mid-40s, with some allowing more given strong credit, reserves, or a lower loan-to-value. Requirements vary by loan program and lender.
Which debts count toward DTI?
Generally minimum payments on installment loans, revolving credit, student loans, auto loans, and obligations like child support or alimony. Treatment of specific debts can vary by loan program.
Does rent count against my DTI if I'm buying my first home?
Current rent typically is not counted once you're buying, but the new estimated mortgage payment is added in its place for qualification purposes.
Will paying off a small loan help more than paying off a large one?
It depends on the minimum payment eliminated, not the balance — paying off a $3,000 loan with a $150/month payment often helps DTI more than paying down a large loan by the same amount.
Results are estimates for educational purposes only and are not a commitment to lend, loan approval, or official Loan Estimate. Actual rates, payments, costs, taxes, insurance, mortgage insurance, eligibility, and loan terms may vary.
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Answers
Frequently asked questions
What is a good debt-to-income ratio for a mortgage?
Many programs comfortably allow DTIs up to the mid-40s, and some allow higher with compensating factors. Requirements vary by loan program, credit, reserves, and lender overlays.
Which debts count toward DTI?
Generally, minimum monthly payments on installment loans, revolving accounts, student loans, auto loans, child support, and alimony. Treatment of specific debts can vary by loan program.
Next step
Numbers are helpful. A personalized strategy is better.
Review your scenario with a Vabasso mortgage expert. No pressure, no obligation — just clear guidance for your next move.