What Mortgage Lenders Actually Look At
Mortgage qualification is not a single yes/no decision — it is a multi-factor evaluation that lenders run simultaneously. The five main factors are credit score, debt-to-income ratio (DTI), down payment, employment history, and cash reserves. A weakness in one area can sometimes be offset by strength in another. A lower credit score might be acceptable with a larger down payment; a higher DTI might be overlooked with excellent credit.
This calculator replicates the five major loan programs — Conventional, FHA, VA, USDA, and Jumbo — and checks your inputs against each program's actual requirements. You get a full qualification analysis, not just a payment estimate.
Understanding Debt-to-Income Ratio
DTI is the single most important number lenders calculate. Your front-end DTI is your proposed housing payment divided by your gross monthly income — lenders want this at 28% or below for conventional loans. Your back-end DTI is all monthly debt obligations (housing + car + student loans + credit cards) divided by gross monthly income — conventional lenders want this at or below 43%, though some allow up to 50% with compensating factors like excellent credit or large reserves.
Important: lenders use gross income (before taxes), not take-home pay. And they use minimum required payments on revolving debt, not your actual payments. If you pay $500/month toward a credit card but the minimum is $50, the lender uses $50. This means paying down revolving balances can dramatically improve your DTI even if the minimum payment stays the same.
Choosing the Right Loan Program
Conventional loans are the most flexible but require the strongest credit. FHA loans accept lower credit scores (580+) and smaller down payments (3.5%) but charge mandatory mortgage insurance for the life of the loan. VA loans are the best deal available — zero down payment, no PMI, competitive rates — but require military service. USDA loans offer zero-down purchasing in rural and some suburban areas with income limits. Jumbo loans finance properties above the conforming loan limit ($766,550 in 2026) and require stronger credit and larger reserves.
Getting pre-approved (not just pre-qualified) before house-hunting is essential in today's market. Pre-approval requires a hard credit pull and full document review, but results in a commitment letter that sellers treat as near-certain financing. Most competitive offers now include a pre-approval letter.
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