A mortgage pre-approval is a lender’s conditional commitment to loan you a specific amount at estimated terms, based on a review of your finances. In most housing markets, sellers expect pre-approval letters before considering an offer seriously. Getting pre-approved also tells you exactly what you can afford before you start shopping. Here is how the process works in 2026.
Pre-Qualification vs. Pre-Approval: What’s the Difference?
Pre-qualification is an informal estimate based on self-reported income and assets — no credit pull, no document verification. It takes minutes and means very little to sellers. Pre-approval is a formal process: the lender pulls your credit, verifies your income and assets, and issues a letter stating the loan amount and terms you qualify for. Pre-approval carries real weight with sellers and real estate agents.
Some lenders now offer fully underwritten pre-approval, which involves a complete underwriting review upfront. These carry even more weight in competitive markets.
What You Need for Pre-Approval
Income Documentation
- Two most recent pay stubs (W-2 employees)
- Two years of federal tax returns and all schedules (self-employed)
- Two years of W-2 forms
- Proof of any additional income: rental income, alimony, Social Security, etc.
Asset Documentation
- Two to three months of bank statements (all accounts)
- Statements for retirement and investment accounts
- Documentation for any large recent deposits (lenders ask about large unexplained deposits)
Identity and Credit
- Government-issued photo ID
- Social Security number (for the credit pull)
- Current address history
Credit Score Requirements by Loan Type
Minimum credit score requirements vary by loan type. Conventional loans typically require a 620 minimum, though rates improve significantly above 740. FHA loans allow scores as low as 580 with 3.5% down, or 500 with 10% down. VA loans have no official minimum but most lenders require 620. USDA loans generally require 640 or higher.
How DTI Affects Pre-Approval
Lenders look at two debt-to-income (DTI) ratios. Front-end DTI is your projected housing payment divided by gross monthly income. Back-end DTI includes all monthly debt payments plus the projected housing payment, divided by gross monthly income. Most conventional lenders cap back-end DTI at 43% to 45%; some programs allow up to 50% with compensating factors.
How to Improve Your Pre-Approval Terms
- Pay down revolving credit card debt to reduce DTI and improve credit utilization
- Avoid opening new credit accounts for at least 6 months before applying
- Do not close old accounts — this reduces available credit and can lower your score
- Correct any errors on your credit reports before applying
- Save a larger down payment — 20% eliminates PMI and may improve your rate
How to Apply for Pre-Approval
Apply with multiple lenders within a short window — typically 14 to 45 days. Multiple mortgage inquiries within this window are treated as a single inquiry for credit score purposes, so shopping around does not damage your credit. Compare loan estimates from at least three lenders, looking at interest rate, APR, origination fees, and total loan costs — not just the monthly payment.
Online lenders such as Better, Rocket Mortgage, and LoanDepot offer digital pre-approval in minutes. Traditional banks and local credit unions may offer more personalized service and competitive rates for existing customers.
How Long Pre-Approval Lasts
Most pre-approval letters are valid for 60 to 90 days. If you have not found a home within that window, you will need to update your documentation and have the lender re-run your credit. If your financial situation has not changed significantly, this is usually a quick process.
Bottom Line
Getting pre-approved before you shop for a home puts you in a stronger negotiating position and prevents the disappointment of falling in love with a home you cannot actually afford. Gather your documents, compare lenders, and get pre-approved before your first showing. In competitive markets, a fully underwritten pre-approval letter can be the difference between a seller accepting your offer or someone else’s.