Mortgage Quick Qualification DTI Calculator
Get an instant mortgage pre-qualification estimate using current 2026 DTI guidelines. Calculate maximum home price by loan type and see your front-end and back-end ratios.
| Total household income | — |
| Total monthly debts | — |
| Max allowed back-end DTI for loan type | — |
| Max monthly housing (PITI) | — |
| Estimated max P&I (PITI - taxes/insurance) | — |
| Max loan amount | — |
| Max purchase price (loan + down) | — |
Mortgage qualification depends primarily on your debt-to-income (DTI) ratio — the percentage of your gross monthly income consumed by all debt payments including the new mortgage. 2026 guidelines: conventional 45%, FHA 50%, VA 41% (flexible), jumbo 43%. This calculator estimates your maximum purchase price based on income, debts, and loan type. Real underwriting may approve more or less based on credit score, reserves, and compensating factors.
Front-End vs Back-End DTI
Front-end DTI (housing ratio): monthly PITI (principal, interest, taxes, insurance + PMI/HOA) divided by gross monthly income. Conventional max: 28%. FHA max: 31%. Back-end DTI (total debt ratio): PITI plus all other debt obligations (car, student loans, credit cards, other installment loans) divided by gross monthly income. This is the more important number because lenders focus on total debt obligations, not just housing. 2026 maximum back-end DTI: Conventional 45% (can stretch to 50% with strong compensating factors), FHA 50%, VA 41% but flexible, Jumbo 43%.
Boost Your Qualification
(1) Pay off small debts: a $200/month credit card balance reduces qualifying capacity by approximately $36,000 in home price. Paying it off creates more room for mortgage payment. (2) Increase down payment: reduces loan amount and PITI, dropping DTI. (3) Add a co-borrower: more income improves the ratio (but co-borrower's debts also count). (4) Consider a 15-year loan: rates are typically 0.5% lower, but the higher payment may offset DTI benefit. (5) Build reserves: 6+ months of payments in liquid savings unlocks DTI flexibility (up to 50% for conventional). (6) Maximize credit score: 740+ unlocks the best rates and the most flexible DTI underwriting.
Last updated May 2026. Sources: Fannie Mae Eligibility, HUD FHA.