Pre-qualification vs. pre-approval
A pre-qualification is an estimate based on figures you state. A pre-approval means a lender has verified your income, assets, and credit and has committed, subject to conditions, to lend up to a stated amount. Listing agents can tell the two apart, and they weigh offers accordingly.
The documents that matter
W-2 employees: two recent pay stubs, two years of W-2s, and two months of bank statements. Self-employed borrowers: two years of tax returns with all schedules and K-1s. Everyone: valid photo ID and permission for a credit pull.
Send a complete package once rather than fragments five times. Incomplete files are the most common reason a pre-approval takes longer than it should.
What underwriting looks at
Three ratios drive the decision: your debt-to-income ratio (commonly capped somewhere between 43% and 50% depending on the program and compensating factors), your loan-to-value, and your reserves after closing. Your credit score mostly sets your pricing tier rather than your approval odds.
Keep the letter fresh
Pre-approvals typically last 60 to 90 days and are refreshed with updated pay stubs and statements. Ask for a letter written to each specific offer amount. A letter showing your maximum budget weakens your position when you offer less than that.
The Consumer Financial Protection Bureau at consumerfinance.gov keeps a plain-language explanation of what lenders may and may not ask for during this stage.