Mortgage Pre-Approval: How It Works & Why You Need It

Pre-qualification versus pre-approval

• Pre-qualification — based on numbers you state verbally, with no verification and usually only a soft credit check.
• Pre-approval — the lender reviews pay stubs, tax returns, and bank statements and runs a hard credit inquiry.
• Underwritten or verified approval — a full underwriter review, the strongest letter short of a loan commitment.
• In competitive markets, an underwritten approval can make your offer competitive with cash.

Documents to gather

• Pay stubs covering the last 30 days.
• W-2 forms and full federal tax returns for the past two years.
• Two to three months of statements for every bank and investment account.
• Government-issued photo ID and Social Security number for the credit pull.
• Self-employed borrowers: two years of returns plus a year-to-date profit and loss statement.
• Documentation for any large or irregular deposits, and a gift letter for down payment help.

The process step by step

1. 1

   Check your credit reports and correct any errors before applying.

2. 2

   Estimate your comfortable payment — not your maximum — with a mortgage calculator.

3. 3

   Apply to three to five lenders within a 14-day window so the inquiries count as one.

4. 4

   Compare Loan Estimates side by side, focusing on APR, points, and lender fees rather than the headline rate.

5. 5

   Select a lender and request a pre-approval letter you can update with a specific offer amount.

Protecting your approval until closing

• Do not change jobs, reduce hours, or switch from W-2 to contract work.
• Do not open new credit cards, finance furniture, or take out an auto loan.
• Do not make large unexplained deposits or move money between accounts unnecessarily.
• Keep paying every bill on time — a single late payment can shift your rate tier.
• Refresh your letter if house hunting extends past 60 to 90 days.