Bottom line: Most homebuyers qualify for at least one mortgage type — the question is which one and at what rate. Conventional loans at the best rates require 700+ credit, sub-40% DTI, and 20% down. FHA loans accept 580 credit and 3.5% down. VA loans require no down payment for eligible veterans. Know which category you fall into before you start shopping.
Mortgage qualification is not a single threshold — it is a matrix of credit score, income, debt load, and down payment, evaluated differently across loan programs. Understanding where you stand on each dimension lets you identify which loan types you qualify for today and what to improve if you want better terms.
The Four Qualification Factors
1. Credit Score
Credit score is the most influential factor in your rate. Lenders use mortgage-specific FICO scores (FICO 2, 4, and 5) that may differ slightly from the scores you see in consumer apps.
| Loan type | Minimum credit score | Notes |
|---|---|---|
| Conventional (Fannie/Freddie) | 620 | Best rates at 740+ |
| FHA | 580 (3.5% down) | 500–579 requires 10% down |
| VA | No official minimum | Most lenders require 580–620 |
| USDA | 640 | |
| Jumbo | 700–720 | Varies by lender |
The rate difference between a 680 and 760 score on a $400,000 conventional loan is typically 0.5–0.75% — roughly $100–150/month and $36,000–54,000 over 30 years.
2. Income Verification
Lenders verify income stability and sufficiency, not just the amount.
W-2 employees: Two years of W-2s, recent pay stubs, employment verification. Job changes within the same field at the same or higher pay are generally acceptable. Recent job changes to a new industry may require a 30-day pay history at the new position.
Self-employed: Two years of federal tax returns (personal and business), year-to-date profit/loss statement. Lenders use the average net income from the two most recent tax years — not gross revenue. High business deductions that reduce tax liability also reduce qualifying income.
Variable income (commission, bonuses, overtime): Averaged over two years. If your bonus was unusually high in year two, lenders may discount it or use the lower average.
Rental income: Typically counted at 75% of gross rents to account for vacancy and expenses, with documentation of 12–24 months of receipts.
3. Debt-to-Income Ratio (DTI)
DTI measures your monthly debt obligations as a percentage of gross monthly income. Lenders calculate two ratios:
Front-end DTI (housing ratio): New mortgage payment (PITI) ÷ gross monthly income. Most conventional loans want below 28–31%.
Back-end DTI (total debt ratio): All monthly debt payments ÷ gross monthly income. Conventional loans typically cap at 43–45%; some automated approvals go to 50%. FHA allows up to 50% with compensating factors.
What counts as monthly debt: Minimum credit card payments, auto loans, student loans (even deferred — lenders use 0.5–1% of the balance as a monthly payment for qualifying), personal loans, child support, alimony. Does not include utilities, insurance, subscriptions.
- Paying down credit card balances before applying for a mortgage is one of the most efficient pre-application moves. Every $500/month reduction in monthly debt payments increases qualifying purchase price by approximately $70,000–100,000 (at today's rates). High-balance cards affect both DTI and credit utilization simultaneously.
- Do not pay off student loans immediately before a mortgage application if it means depleting reserves. Lenders want to see 2–6 months of mortgage payments in savings after closing costs and down payment — cash reserves are a compensating factor that can offset a slightly higher DTI or weaker credit.
- Gift funds can cover all or part of the down payment on most loan types, with a gift letter from the donor. The donor must confirm the funds are a gift, not a loan. Large deposits in your bank account (greater than half a month's paycheck) require explanation and documentation — plan transfers well in advance of applying.
4. Down Payment and Assets
Conventional loans: Minimum 3% (first-time buyers), typically 5–10% otherwise. 20% eliminates PMI.
FHA: 3.5% minimum with 580+ score. Can come entirely from gift funds.
VA and USDA: 0% down payment. Funding fees apply to VA loans (can be financed into the loan).
Reserves: Most lenders want 2–6 months of housing payments in savings after closing. This is separate from the down payment and closing costs.
What to Fix Before Applying
Credit score below 620: Pay down revolving balances below 30% of limit, dispute errors on your reports, and ensure all accounts are current. Allow 3–6 months of improvement before applying.
DTI above 45%: Pay down or pay off installment loans nearing completion (paying off a car loan with 8 payments remaining eliminates that payment from DTI). Increase income documentation if any qualifying income is being excluded.
Insufficient down payment: FHA requires only 3.5%; down payment assistance programs exist at state and local level. A co-borrower with assets can strengthen the application.
Thin credit history: Become an authorized user on a trusted family member's old, low-balance card. A 2-year credit history is generally sufficient for mortgage qualification.
Mortgage qualification requirements vary by loan type, lender, and market conditions. Verify current requirements directly with lenders.
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