Debt-to-income Calculator
DTI is the lens most purchase mortgages use: housing payment plus monthly debts versus gross income. This page helps you see where a new mortgage payment would land before you are under contract.
Quick answer
Enter income, proposed housing payment (PITI + HOA), and non-housing debts. You get a clear picture of front-end and back-end DTI at your assumptions.
For a related estimate, see 20 Percent Down Calculator.
Explore further: Biweekly Mortgage Calculator · Closing Cost Calculator
How to use this calculator
- Split housing vs other debts: Housing includes proposed P&I, taxes, insurance, PMI, and HOA.
- Use minimum payments on revolving debt: That is what credit reports typically show for scoring.
- Compare to typical guidelines: Many programs care about total DTI; some emphasize housing ratio—know both numbers.
The ratio in plain English
Front-end: housing ÷ gross income. Back-end: housing + other debts ÷ gross income. Different loan types use different limits—your loan officer confirms program rules.
Explore further: Down Payment Calculator · Home Affordability With Taxes
Real-world example
- Example: $8,000/mo gross, $2,200/mo housing, $700/mo other debt: Housing DTI ≈ 27.5%; total DTI ≈ 36.3%—often workable if credit and reserves are strong (illustrative, not approval).
Explore further: Home Loan Calculator · House Down Payment Calculator
What this means
Back-end DTI near 43% is often the edge of conventional appetite; in the high 30s you still qualify but have thin margin. Front-end housing much above 30% of gross is a yellow flag even when the lender says yes—plan for savings and repairs, not just the approval.
FAQ
Does a high DTI always disqualify me?
Not always—compensating factors exist. But high DTI means smaller room for error if income dips.
Are student loans counted?
Usually yes, often at documented payment or guideline formulas depending on loan type.
Is this an official loan estimate?
No. It is an educational model. Lenders issue formal estimates after underwriting; use this to ballpark payments and compare scenarios.
Why does my lender’s payment differ?
Escrow timing, PMI rules, local tax assessments, and rounding can differ. Align inputs with your Loan Estimate line items when comparing.