How mortgage pre-approval works, step by step
A pre-approval (or prequalification) letter is a lender's statement that it is tentatively willing to lend you up to a certain amount, based on the information you provide. The CFPB notes that lenders use the two terms differently, so ask what the letter is based on: a verified credit check and documents, or just what you told them. It is not a final approval or a loan commitment. You can get letters from several lenders; credit checks for a mortgage within 45 days generally count as a single inquiry on your credit report.
Prequalification vs pre-approval
The CFPB explains that a prequalification or preapproval letter shows sellers you're a serious buyer, and that lenders may use either term for the same thing. What matters is what the lender checked. A letter based on a credit check and verified income and assets is stronger than one based only on numbers you typed into a form.
What lenders typically ask for
- Photo ID and Social Security number (give these only to a lender you've chosen, on its own secure site, never through a comparison or "rate" website)
- Recent pay stubs and W-2s, or tax returns if you're self-employed
- Bank and investment statements for your down payment and reserves
- A list of debts and monthly payments
- Permission to pull your credit report
What the lender looks at
- Credit history and score. Affects whether you qualify and your rate (see credit scores and mortgage rates).
- Debt-to-income ratio (DTI). Your monthly debts, including the new mortgage, divided by gross monthly income.
- Down payment and loan-to-value ratio.
- Employment and income stability.
How pre-approval affects your credit
A pre-approval usually involves a hard credit check. The CFPB says multiple mortgage credit checks within a 45-day window are treated as one inquiry for most credit scores, so you can compare lenders without extra damage. Avoid opening new credit cards or car loans while you're buying a home.
Turning pre-approval into the best offer
- Get pre-approved by at least two or three lenders (banks, credit unions, online lenders, or a mortgage broker).
- Once you have a property, request an official Loan Estimate from each on the same day and compare them line by line. See how to negotiate loan terms.
- Remember that final approval depends on the appraisal, title and updated verification. Don't change jobs or take on debt before closing.
Frequently asked questions
Is a pre-approval a guarantee I'll get the loan?
No. It's a conditional, preliminary assessment. Final approval depends on underwriting, the appraisal, title and verifying your information again before closing.
How long does a pre-approval letter last?
It depends on the lender; many letters are dated and need updating if your house hunt runs long. Ask the lender.
Will getting pre-approved by several lenders hurt my credit?
The CFPB says multiple mortgage credit checks within 45 days are generally treated as a single inquiry, so shopping in a short window limits the impact.
What's the difference between prequalification and pre-approval?
The CFPB says lenders use both terms, sometimes interchangeably. Ask whether the letter is based on a credit check and verified documents or only on information you reported.
Sources
- CFPB: Prequalification letter vs preapproval letter (accessed October 29, 2026)
- CFPB: What happens when a mortgage lender checks my credit? (accessed October 29, 2026)
- CFPB: Request and review multiple Loan Estimates (accessed October 29, 2026)
- CFPB: What is a debt-to-income ratio? (accessed October 29, 2026)
- CFPB: Shopping for a mortgage (accessed October 29, 2026)
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