Your FICO scores differ across bureaus because Equifax, Experian, and TransUnion each hold slightly different information about you, lenders and apps use different versions of the FICO formula, and creditors update your file on their own schedules. Any one person can have dozens of legitimate FICO scores at the same time, and no single number is more “real” than another.
The Three Bureaus Don’t Share a File
Equifax, Experian, and TransUnion are independent, for-profit companies, and each maintains its own database of consumer credit information. The Fair Credit Reporting Act sets rules for how they collect and handle your data, but it does not require creditors to send account information to any of them.1Federal Trade Commission. Fair Credit Reporting Act Reporting is voluntary. Many creditors, especially smaller lenders and credit unions, report to only one or two bureaus to save on data costs.2Federal Reserve System. Furnishers Obligations for Consumer Credit Information Under the CARES Act, FCRA, and ECOA
That selective reporting creates gaps. One bureau might show a $5,000 credit limit on a store card while another has no record the account exists. A late payment reported to Equifax but never sent to TransUnion will produce a noticeable score difference between the two, since payment history drives roughly 35 percent of your FICO score.3myFICO. How Are FICO Scores Calculated
Public records add another layer of variation. Under the National Consumer Assistance Plan, a 2015 settlement between the three bureaus and more than 30 state attorneys general, civil public records like tax liens and civil judgments must meet minimum identification standards and be refreshed at least every 90 days to appear on a report.4Consumer Financial Protection Bureau. Removal of Public Records Has Little Effect on Consumers Credit Scores If one bureau verifies a record and another finds it fails those standards, the record shows up at one bureau and not the other, and the scores diverge.
Different Versions of the FICO Formula
FICO periodically updates its scoring formula. FICO 8 is the most widely used version, but FICO 9, FICO 10, and FICO 10T are all in active use.5myFICO. FICO Scores Versions Each version changes how certain behaviors affect the final number.
The differences can be meaningful. FICO 9 ignores paid collection accounts entirely, while FICO 8 still counts them against you if the original balance exceeded $100.6Experian. What Is FICO Score 9 A borrower who recently settled a collections debt could see a significantly higher number under FICO 9 than FICO 8 for that reason alone. FICO 10T goes further by incorporating “trended data,” your balance and payment patterns over time, instead of a single monthly snapshot. That rewards borrowers who are actively paying down debt.7FICO. Where Things Stand for FICO Score 10T in the Conforming Mortgage Market
Lenders adopt new versions slowly because upgrading means recalibrating automated underwriting systems and completing regulatory testing. Some mortgage lenders still rely on FICO Score 2 (Experian), FICO Score 5 (Equifax), and FICO Score 4 (TransUnion), versions that are decades old, because those are what Fannie Mae and Freddie Mac have historically required.5myFICO. FICO Scores Versions A fintech credit card issuer may use FICO 9 or 10. So your score from a mortgage application and your score from a credit card application can differ even when they pull from the same bureau, because the formula running the math is different.
Industry-Specific Versions
Beyond the base FICO scores, Fair Isaac also produces versions tuned for specific types of lending. An auto lender may use a FICO Auto Score, which puts extra weight on your history with vehicle loans. A credit card issuer may use a FICO Bankcard Score, which weighs revolving credit more heavily. These industry versions share the same foundation as the base score but are fine-tuned for particular risk patterns, and they run on a 250 to 900 scale rather than 300 to 850.8Experian. What Is a FICO Auto Score A consumer with a base score of 720 might see an Auto Score of 750 with a clean vehicle-payment history, or a lower number with a past repossession.5myFICO. FICO Scores Versions
Medical Debt Isn’t Treated the Same Way Everywhere
How medical debt affects a score depends on which model is running. The three major bureaus voluntarily stopped reporting paid medical collections, added a one-year waiting period before unpaid medical debt appears on reports, and removed medical collections under $500.9FICO. Medical Collection Removals Have Little Impact on FICO Scores VantageScore 3.0 and 4.0 went further and exclude all medical collection data regardless of balance or age.10VantageScore. Major Credit Score News: VantageScore Removes Medical Debt Collection Records From Latest Scoring Models A CFPB rule that would have banned medical bills from credit reports entirely was vacated by a federal court in July 2025.11Consumer Financial Protection Bureau. CFPB Finalizes Rule to Remove Medical Bills from Credit Reports The same medical debt can affect one scoring model and not another.
Timing: Scores Shift Day to Day
Even two scores from the same bureau and the same model version can differ if they’re pulled on different days. Creditors typically report your balance and payment status once a month, but each creditor sets its own reporting date. One card issuer might report on the 1st, another on the 15th, and your student loan servicer on the 8th.12Experian. How Often Is a Credit Report Updated Because you may have several creditors on different schedules, the data at any bureau can change from one day to the next.13Equifax. How Often Does Your Credit Score Update
This matters most when a large balance changes. If you pay $4,000 off a credit card on the 10th but that issuer doesn’t report until the 20th, any score pulled between those dates still reflects the higher balance and your old utilization ratio. A lender checking on the 12th sees old data; the same lender checking on the 22nd sees a different, and likely better, picture.
Why the Score on Your Banking App Looks Different
Many free credit-monitoring apps and bank dashboards show a VantageScore, not a FICO score. VantageScore is a competing model developed jointly by the three bureaus, and it uses a different formula than FICO. The number you see for free is often not the number a lender pulls when you apply for credit. Equifax’s own free monitoring app, for example, provides a VantageScore, not a FICO score.14Equifax. myEquifax App: Track Your Credit and Help Protect Your Identity
Both models use a 300 to 850 scale, but the same number does not represent the same level of risk across the two systems. Category labels differ too: FICO calls 670 to 739 “good,” while VantageScore labels 661 to 780 as “prime.” The weightings also diverge. VantageScore 4.0 assigns 41 percent to payment history versus FICO’s 35 percent, and FICO puts 30 percent on amounts owed versus VantageScore’s 20 percent on utilization.3myFICO. How Are FICO Scores Calculated
VantageScore can also generate a number for consumers with as little as one month of credit history, while FICO requires at least one account open for six months with activity reported within the last six months. A person who is brand-new to credit may see a VantageScore on a free app but get no FICO score at all when a lender checks.
What to Do About the Mismatch
Because your three bureau files are separate, an error on one report might not appear on the others, and that error could be the reason your scores don’t line up. Start by pulling all three reports. You can get a free report from each bureau every week through AnnualCreditReport.com, a program the three bureaus have permanently extended. Through 2026, Equifax also offers six additional free reports per year through the same site.15Consumer Advice – FTC. Free Credit Reports
If you spot an error, such as a wrong balance, a late payment you made on time, or an account you don’t recognize, file a dispute with the bureau that shows the mistake. Put the dispute in writing, explain what’s wrong and why, and include copies of any documents that support your case. Certified mail creates a record that it was received.16Consumer Financial Protection Bureau. How Do I Dispute an Error on My Credit Report
Once a bureau receives your dispute, it generally has 30 days to investigate and must notify you of the results within five business days after finishing. If you submit additional supporting documents during the initial 30-day window, the bureau may extend the investigation by up to 15 additional days.17Consumer Financial Protection Bureau. How Long Does It Take to Repair an Error on a Credit Report
You can also dispute directly with the creditor that reported the information. If the creditor finds the data is inaccurate, it must notify all three bureaus to correct it, not just the one you disputed with.18Consumer Advice – FTC. Disputing Errors on Your Credit Reports Going straight to the source is often the fastest way to fix an error that appears on more than one report.