There isn't one minimum credit score for every mortgage, and that's the honest answer to "what score do I need to buy a house." It depends on the loan program, on what the automated underwriting system says about your whole file, and on the lender. With us, the one company minimum is 580 on FHA loans. Fannie Mae's Desktop Underwriter no longer has a minimum score for new casefiles, Freddie Mac doesn't require one when LPA returns an Accept, VA doesn't set one, and USDA doesn't print one. Texas down payment assistance programs start at 620. And your score is only one line in a file the underwriter reads in full.
Below I'll explain where the mortgage score comes from, which score counts when there are three of them, how each program uses it, what else on the report matters, and what tends to help or backfire before you apply. I keep the agency rule, the automated underwriting rule, the program rule and our company rule separate, because mixing them up is where most of the confusing advice online comes from.
Sources for each of these are below. If your score is under 620 and you're hoping for a conventional loan, or you don't have a score at all, ask me how this applies to your file before you assume either way.
Most mortgage files use a tri-merge credit report. I order a single report that pulls your files from Equifax, Experian and TransUnion and shows the accounts from all three side by side, with a score from each bureau.
Those scores come from specific scoring model versions the agencies accept. Fannie Mae still requires the classic FICO versions from each bureau for DU and manually underwritten loans, and lists VantageScore 4.0 as eligible for lenders set up to deliver it (Fannie Mae Selling Guide B3-5.1-01). Freddie Mac opened VantageScore 4.0 to all sellers on Sept 9, 2026, and still requires classic FICO on manually underwritten loans (Freddie Mac Bulletin 2026-H). For FHA, HUD Mortgagee Letter 2026-11 changes the credit score rules only for case numbers assigned on or after Jan 1, 2027 (HUD ML 2026-11). Until then, the current FHA rules apply. Which model a file uses depends on the program, the lender and the date, so ask me which model your file will use rather than assuming a newer one is in play.
The practical point: the score on a mortgage report is often different from the score in your bank app or on a free credit monitoring site. Those apps commonly show a different model, and sometimes a different bureau. Both numbers can be accurate. They're measuring the same report with different formulas. That's why I'd rather read your mortgage report than guess from an app.
With one borrower and three scores, the usual practice is to take the middle score. Line the three up from lowest to highest, and the one in between is the score the file uses. The highest is set aside, and so is the lowest. If only two bureaus return a score, guidelines commonly use the lower of the two. If only one bureau or none returns a score, the file may need a program that allows limited or non-traditional credit, and that's a conversation to have with me directly.
With two or more borrowers, each borrower gets their own representative score first, and then the program says how those combine. FHA uses the lowest decision score among the borrowers (HUD 4000.1 II.A.1.b.ii(A)(3)). Fannie Mae uses the average of the borrowers' median scores to set eligibility on manually underwritten loans (B3-5.1-01). Freddie Mac lets the seller choose among three methods when a minimum score applies (Freddie Mac Guide 5203.2(e)). The guide in the file names the method. Scores are selected by rule, so a spouse's strong score doesn't cover for a weak one through a household blend unless the program's own method does that.
The score does two separate jobs: eligibility and pricing.
Here's where each program stands today, with the agency rule, the automated underwriting rule and our company rule kept separate.
Lender overlays are a separate layer from everything above. Many lenders set their own minimum scores, which is why two lenders can answer the same file differently. Other than the 580 FHA minimum, our company follows the agency and automated underwriting rules without adding score minimums of its own. How any of this applies to a specific file, especially a low score on a conventional or USDA loan, is something I'll check on your actual findings. State down payment programs such as TSAHC and TDHCA set their own score requirements, covered in their own articles.
On conventional loans, the score is one of the inputs in loan-level price adjustments, which are charges tied to risk factors like score and loan-to-value. A higher score can mean a better price on the rate sheet for the same loan. Mortgage insurance companies also price by score. Those tables change and I don't reprint them here, because a table from last year can misstate this year's price. If you're close to a score break, it's worth asking whether a small improvement before you lock would change your options.
The underwriter reads the report itself, line by line. That reading is where many files are actually decided.
Here's how the score and the report can pull in different directions. A buyer has a middle score that clears the program's floor and an old collection the score has already absorbed. The score is fine. The collection may still need to be paid, explained or counted, depending on the program. The buyer who only watches the score misses the collection. The buyer who only worries about the collection misses that the score already works. When something needs explaining, a short, factual letter of explanation usually does the job.
A lot of people put off talking to a lender because they're afraid of "dinging" their score. Here's what the CFPB says: within a 45-day window, multiple credit checks from mortgage lenders are recorded as a single inquiry, because lenders know you're only buying one home. Checking your own credit doesn't affect your scores at all (CFPB, What happens when a mortgage lender checks my credit?).
That grace applies to mortgage inquiries. A new car loan or a store card opened during the process is a different story, both for the score and for your ratios. The underwriter may also ask about recent inquiries from other creditors to make sure no new debt is missing from the application.
You may also remember getting a flood of calls and texts right after a lender pulled your credit. Those were "trigger leads." The Homebuyers Privacy Protection Act limits them: since March 5, 2026, a credit bureau generally can't sell your mortgage inquiry to another company unless it's a firm offer and that company has your authorization, already holds or services your current mortgage, or is a bank or credit union where you have an account (Public Law 119-36, amending FCRA section 604(c)). You can still opt out of prescreened offers at the bureaus if you'd like fewer of them.
Being an authorized user on a parent's or spouse's card can put that account's history on your report. Whether the mortgage file credits it depends on the program and the automated findings. Some automated systems consider authorized-user tradelines, and some guidelines tell the underwriter to look closer when the account belongs to someone else. If most of your history comes from authorized-user accounts, expect the underwriter to ask about it.
If something on the report is wrong, you have the right under the Fair Credit Reporting Act to dispute it with the credit bureau, and the bureau has to investigate. Free copies of your reports are available at AnnualCreditReport.com, the site the federal government directs consumers to.
A dispute on a true account can cause trouble during the loan, because some automated systems won't issue findings with certain open disputes on the report. The lender may ask you to remove the dispute, which can change the score. A dispute on an account that's actually wrong should stay until the bureau corrects it.
When a correction has been made, or a balance has been paid down, a lender can sometimes request a rapid rescore. The lender sends documentation through its credit vendor, the bureaus update the account, and a new score is produced faster than waiting for the next normal reporting cycle. A rapid rescore updates accurate information. A true late payment stays on the report, and a letter to the lender won't remove it.
Scores respond mostly to payment history and to how much of your available revolving credit you're using. Paying a credit card balance down before the statement closes can lower the reported utilization. Making every payment on time keeps the history clean.
Changes made right before a mortgage often backfire. Opening a new card or loan to build credit adds a new account, a hard inquiry and sometimes a new payment that lands in the ratio. Closing old cards can raise utilization by shrinking the available credit. Paying an old collection can change the date of activity on the account, and on some scoring models that can lower the score in the short run. Each of these is worth deciding with me looking at your report, instead of following a tip from social media.
This example is made up to show how the rules apply.
Dante and Keisha are buying in Benbrook. Dante's three scores are 640, 655 and 671, so his middle score is 655. Keisha's are 598, 611 and 604, so her middle score is 604. On an FHA loan, the lowest middle score among the borrowers counts, so the file is decided at 604. That clears our 580 FHA minimum. It doesn't meet the 620 that TSAHC and TDHCA ask for, so if they want state assistance, the plan is either to raise Keisha's score first or to look at whether Dante could qualify on his own. Keisha's bank app shows a higher number than her mortgage score, because it uses a different model. Whether they're approved still comes down to underwriting their income, debts and the rest of the report.
The fastest way to know where you stand is to read your actual mortgage report with the right program in mind. I'll show you which score controls, what else on the report matters, and whether anything is worth fixing before you write an offer. Book a call, or when you're ready, start an application.
Links checked Oct 21, 2026.
About the author: McKade Lively, NMLS 2704474, American Pacific Mortgage Corporation dba True North Home Loans, NMLS 1850.
Equal Housing Opportunity.
Last reviewed: Oct 2026