What Is Mortgage Pre-Approval?
Quick Answers
Valid for
60 to 90 days
vs pre-qualification
Verified income/credit
Processing time
1 to 10 business days
Improves offer odds
Significantly
Pre-approval is a lender's conditional commitment to loan you a specific amount based on a verified review of your credit, income, and assets -- making you a more competitive buyer.
A mortgage pre-approval is a formal evaluation by a lender of your creditworthiness, income, employment history, and assets. Unlike a pre-qualification (which is a quick, informal estimate), pre-approval involves a hard credit pull and documentation review -- and results in a specific loan amount the lender is prepared to offer you, subject to finding a suitable property.
Sellers and their agents take pre-approved buyers much more seriously. In competitive markets, making an offer without pre-approval is often a non-starter. A pre-approval letter signals that a lender has already vetted your finances and is likely to fund the loan.
pre-approvals typically expire after 60-90 days. If you haven't found a home in that window, you'll need to update your documentation and get a fresh letter.
Pre-Approval vs. Pre-Qualification
- Pre-qualification: Based on self-reported information. No hard credit pull. Quick but carries little weight with sellers.
- Pre-approval: Based on verified documents. Includes a hard credit inquiry. Carries significant weight and speeds up the closing process.
- Documents needed: W-2s or tax returns (2 years), recent pay stubs, bank statements (23 months), government ID, and employer contact info.
- Expiration: Most pre-approvals are valid for 60-90 days before needing renewal.
- Impact on credit: Each hard inquiry from a pre-approval typically reduces your score by 5 points or less -- and multiple inquiries within a 45-day window count as one inquiry for scoring purposes.
The Pre-Approval Process
pre-approval Amount Based on DTI 43% + Credit Score + Verified Income + Assets
The lender reviews your credit score, debt-to-income ratio, employment stability, and available assets for a down payment and closing costs. They then issue a pre-approval letter stating the maximum loan amount they'll lend. This isn't a guarantee -- the property still needs to appraise, and your financial situation must remain stable through closing.
Pre-Approval Example
Gross income: $7,500/mo. Existing debt: $500/mo. Max DTI: 43%.
Max total debt allowed = $7,500 x 43% = $3,225/mo
Max new mortgage payment = $3,225 - $500 = $2,725/mo
Pre-approval letter might state: up to ~$420,000 at 6.75%/30yr
That $420,000 figure is the maximum the lender's formula allows -- it doesn't account for your other spending, savings goals, or lifestyle. Many buyers who get pre-approved at their true ceiling find the resulting payment uncomfortably tight once real life (childcare, travel, retirement saving) is factored back in.
Common Pre-Approval Mistakes
- Shopping at the top of your pre-approval amount: As the example shows, the pre-approval ceiling is based purely on DTI math, not your actual comfort level. Many buyers set their real house-hunting budget noticeably below the letter's maximum.
- Making a big financial change between pre-approval and closing: Switching jobs, financing a car, opening a new credit card, or making a large unexplained deposit can all jeopardize final approval -- lenders often re-verify your credit and finances right before closing.
Frequently Asked Questions
Does pre-approval guarantee I'll get the loan?+
No. Pre-approval is a conditional commitment. The final loan is still subject to underwriting, a satisfactory property appraisal, and your financial situation remaining stable through closing.
Will getting pre-approved hurt my credit score?+
A hard inquiry typically drops your score by fewer than 5 points temporarily. Multiple mortgage inquiries within a 45-day window are treated as a single inquiry under most credit scoring models.
Should I get pre-approved before finding a home?+
Yes -- always get pre-approved before seriously shopping for homes. It tells you your true budget, strengthens any offer you make, and speeds up closing once you're under contract.
Can I get pre-approved at multiple lenders?+
Yes, and it's recommended. Shopping multiple lenders within a short window (14-45 days) lets you compare loan terms without additional credit score damage since the inquiries bundle together.
What can cause a pre-approval to be revoked?+
Major changes to your financial profile before closing -- such as changing jobs, taking out new debt, large unexplained deposits, or a drop in your credit score -- can jeopardize a pre-approval or final loan approval.
Related Calculators
About the Author: De Van Do
De Van Do is the author and site builder behind MyLoanCalcs.com. With a background in technology, De Van Do built this site out of an interest in making financial calculations clear and accessible. De Van Do is not a licensed loan officer, mortgage broker, or financial advisor -- content on this site is for informational purposes only.