What is mortgage preapproval?
Dan Green, the CEO of Homebuyer, a lender for first-time buyers, calls mortgage preapproval a “dress rehearsal” for your actual mortgage approval. As such, mortgage preapproval requires a hard credit check, which will appear on your credit report.
Lenders also review your income, assets and credit history. Lenders can begin the preapproval process once you fill out a loan application and supply the documentation they ask for, such as pay stubs and proof of assets.
“Preapprovals are your proof that you can get a mortgage approved to buy this home,” said Green.
Once you’re preapproved, the lender issues a preapproval letter stating the loan amount you’re qualified for. Buyers typically include this letter with their offer to show sellers they’re financially prepared and serious about purchasing the home.
Preapproval vs. prequalification
Prequalification and preapproval serve different purposes in the mortgage process. Prequalification is a quick first step that gives you a rough estimate of how much you may be able to borrow. It’s based mostly on the information you provide and is meant to help you plan, not to prove you’re ready to buy a home.
Preapproval is more detailed. Lenders review your full financial picture, including your credit history, income and debts, to decide whether you qualify for a mortgage. This helps catch issues early, before you make an offer.
For sellers, preapproval carries more weight. It shows your finances have been reviewed and that you’re more likely to close on the home. Prequalification can be helpful for budgeting, but preapproval shows you’re serious and prepared.
How does mortgage preapproval affect my credit?
Fortunately, applying for mortgage preapproval won’t cause your credit score to plummet. Green said mortgage preapproval could lead to a five- to 10-point drop in a borrower’s FICO score if they’re a first-time homebuyer with limited credit history.
For a buyer with deeper credit experience, the effect is nominal or nonexistent.”
Applicants with a long history of responsible credit use may see less impact, depending on the information in their application.
“For a buyer with deeper credit experience, the effect is nominal or nonexistent,” said Green.
Hard vs. soft credit inquiries when mortgage shopping
Mortgage preapproval requires a “hard inquiry” or a “hard pull” on one or more of your credit reports with the national credit bureaus: Equifax, Experian and TransUnion.
A hard inquiry indicates that you’re actively applying for credit and gives the lender a detailed view of your credit history. That’s why preapproval can decrease your credit score: It shows you plan to acquire new debt.
This differs from loan inquiries that only require a “soft pull” on your credit, including mortgage prequalification. Soft pulls are used to approve credit for promotional purposes, but they don’t necessarily mean you're borrowing money.
For example, checking your own credit or using an online mortgage calculator that estimates eligibility typically involves a soft inquiry. Because these inquiries don’t signal an intent to take on new debt, they don’t affect your credit score.
How long will a preapproval affect my credit score?
Any impact mortgage preapproval has on your credit score will be short-lived, only lasting a few months, even though hard inquiries stay on your credit reports for two years.
According to the Consumer Financial Protection Bureau (CFPB), you won’t see subsequent impacts on your credit if you opt to get preapproved for a mortgage with more than one loan company in a short time frame.
Mortgage shopping windows
Credit checks from multiple mortgage lenders within a 45-day period count as a single inquiry on your FICO credit report. On your VantageScore report, you have a 14-day period during which multiple lender credit checks will count as one inquiry.
What can I do to get my credit ready for preapproval?
Whether you tried to get preapproved for a mortgage and didn't like your results, or you’re gearing up to apply for preapproval soon, there are steps to take to make sure your credit is in good shape. Keep in mind that a better credit score can help you qualify for more types of home loans and secure a lower interest rate.
- Check your credit reports for errors: Check your credit reports with the three credit bureaus for free at AnnualCreditReport.com. If you find false information, such as incorrect balances or wrongly listed late payments, you can dispute it.
- Avoid opening or closing any new credit accounts: “New credit” and “length of credit history” make up 10% and 15% of your FICO score, respectively. You can prevent drops to your score by not opening new accounts and by keeping old ones open.
- Pay down existing revolving debt: How much credit debt you have compared with your credit limit (credit utilization ratio) makes up 30% of your FICO score. Strive to pay down as much credit card debt as you can. Most experts suggest keeping your credit utilization ratio below 30%.
- Pay your bills early or on time: Your payment history is the most important element of your credit score (35%), so try to pay every bill early or on time.
How to protect your credit while shopping for a mortgage
There are ways to limit credit score impact when shopping for the best mortgage rates. Follow these tips to compare lenders while protecting your credit.
- Get preapproved within a short window: To take advantage of the FICO and VantageScore mortgage shopping windows, plan to submit all your preapproval applications within two to three weeks.
- Gather your documents once: Collect pay stubs, tax returns, bank statements and other financial documents before you start. Having everything ready lets you move quickly through multiple applications during your shopping window.
- Monitor your credit after shopping: Wait 30 to 60 days after your last application, then check your credit report again. Verify that all inquiries appear correctly and that your score rebounds as expected.
FAQ
What factors affect preapproval?
Mortgage preapproval depends on various factors that prove your creditworthiness and ability to repay the loan. These include your credit score, income, down payment amount and debt-to-income (DTI) ratio.
How is preapproval different from prequalification?
As a general rule, preapproval is a step that is further along in the mortgage process than prequalification.
Prequalification gives you a less precise idea of how much you may qualify to borrow and at what rate, based on information you provide; it doesn’t require documentation or a hard credit check.
Preapproval requires a more in-depth look at your qualifications; the lender will ask for supporting documents and get your permission for a hard credit check.
Is there a downside to getting preapproved for a mortgage?
Getting preapproved for a mortgage is a good idea if you plan to buy a home soon and want to know exactly how much you can borrow — and at what rate.
Once you’re preapproved, most lenders provide a preapproval letter you can include with your offer, showing a seller that you have the financial backing to purchase a property.
The downside is a small, temporary drop in your credit score, so don’t seek preapproval until you are ready to start making offers.
How long does a mortgage preapproval last?
In most cases, mortgage preapproval letters are valid for 60 to 90 days. It can vary depending on the lender and market conditions, with some preapprovals expiring in as little as 30 days. The exact expiration date will be on your preapproval letter. Preapprovals expire because lenders must ensure your financial situation hasn’t changed since you received the letter.
Does mortgage preapproval affect all credit bureaus equally?
No, mortgage preapproval doesn’t affect all credit bureaus the same way. When you apply for preapproval, lenders usually check your credit with one or more of the three major credit bureaus: Equifax, Experian and TransUnion. The inquiry shows up on whichever bureaus the lender checks.
If a lender only pulls your report from Equifax, for example, only that bureau will show the hard inquiry; the other two won't reflect it. Additionally, multiple mortgage inquiries within a short period (usually 14 to 45 days) typically count as just one inquiry. This protects your credit score while you shop for the best rate.
What credit score do you need to get approved for a mortgage?
The credit score you need to get approved for a mortgage depends on the type of home loan you get. For conventional mortgages, most lenders require a credit score of at least 620. For FHA loans, the credit score requirement is technically 500, but you’ll need a score of 580 or higher for the lowest down payment.
VA and USDA loans don’t have a set minimum, but a score above 620 will get you the best rates. Note that as of November 2025, Fannie Mae removed the minimum credit score requirement of 620 for loans run through its Desktop Underwriter.
Article sources
ConsumerAffairs writers primarily rely on government data, industry experts and original research from other reputable publications to inform their work. Specific sources for this article include:
- Consumer Financial Protection Bureau, “What’s a credit inquiry?” Accessed Jan. 9, 2026.
- Consumer Financial Protection Bureau, “What exactly happens when a mortgage lender checks my credit?” Accessed Jan. 9, 2026.
- FICO, “What’s in my FICO Scores?” Accessed Jan. 9, 2026.
- Consumer Financial Protection Bureau, “What’s the difference between a prequalification letter and a preapproval letter?” Accessed Jan. 9, 2026.
- Fannie Mae, “Selling Guide Announcement (SEL-2025-09).” Accessed Jan. 9, 2026.
