Mortgage Affordability Calculator
See the maximum loan amount and home price a lender is likely to qualify you for, based on your income, existing debts, and a target debt-to-income ratio — the underwriting lens banks actually use. Want the fuller picture including your cash savings? See our Home Affordability Calculator.
See our DTI Calculator first if you’re not sure what ratio to target, or all our calculators.
Glossary
Your target back-end DTI sets a ceiling on total monthly debt (housing plus other debts) as a share of gross income. Subtracting your other debts and estimated taxes/insurance/HOA leaves the maximum principal-and-interest payment a lender would likely approve, which is then converted to a loan amount using your rate and term.
43% is a common ceiling for conventional and FHA loans, though some lenders go higher with strong compensating factors (credit score, reserves) and some loan types (like VA) use different guidelines. Try our DTI Calculator to see where you currently stand.
Lenders qualify you on your full housing payment (PITI, plus HOA if applicable), not just principal and interest. In NYC, property taxes and common charges/HOA can be a substantial share of the payment, so leaving them out would significantly overstate what you can actually borrow.
It’s a close approximation of the DTI-based math lenders use, but actual approval also depends on credit score, assets, employment history, and the specific loan program — get pre-approved by a lender for a number you can rely on when making offers.