Your FICO scores are different across the three bureaus because Equifax, Experian, and TransUnion each keep their own file on you, FICO sells several versions of its scoring formula that weigh your data differently, and every creditor reports updates on its own schedule. Any score you see is a snapshot of one bureau’s data, run through one specific model, on one specific day. A person can easily have dozens of legitimate FICO scores in circulation at once, and none of them is the “real” one.
The Three Bureaus Don’t Share a File
Equifax, Experian, and TransUnion are separate, for-profit companies, each with its own database. Creditors are not required to report to any of them. The Fair Credit Reporting Act governs how the bureaus handle the information they do collect, but reporting itself is voluntary.1Federal Trade Commission. Fair Credit Reporting Act Many smaller lenders and credit unions send data to only one or two bureaus to keep costs down.2Federal Reserve System. Furnishers Obligations for Consumer Credit Information Under the CARES Act, FCRA, and ECOA
That selective reporting creates gaps between your three files. 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 can move the two scores apart on its own, because payment history is roughly 35 percent of a FICO score.3myFICO. How Are FICO Scores Calculated
Public records add another source of divergence. Under the National Consumer Assistance Plan, a 2015 settlement between the bureaus and more than 30 state attorneys general, civil public records such as tax liens and civil judgments must meet minimum identification standards and be refreshed at least every 90 days to appear on a credit report.4Consumer Financial Protection Bureau. Removal of Public Records Has Little Effect on Consumers Credit Scores If one bureau confirms a record and another doesn’t, it shows up on one report but not the others.
There Isn’t One FICO Score, There Are Many
FICO updates its formula every few years to reflect how people actually use credit. FICO 8 is still the most widely used version, but FICO 9, FICO 10, and FICO 10T are all in active circulation, and each one changes how certain behaviors move the number.5myFICO. FICO Scores Versions
The differences aren’t cosmetic. FICO 9 ignores paid collection accounts, while FICO 8 still counts them against you if the original balance was over $100.6Experian. What Is FICO Score 9 Someone who recently settled a collections debt can score noticeably higher under FICO 9 than FICO 8 for that reason alone. FICO 10T uses “trended data,” meaning your balance and payment patterns over time rather than a single monthly snapshot, which rewards borrowers who are actively paying down balances.7FICO. Where Things Stand for FICO Score 10T in the Conforming Mortgage Market
Lenders switch to new versions slowly because upgrading means recalibrating underwriting systems and running regulatory tests. Many mortgage lenders still rely on FICO Score 2 at Experian, FICO Score 5 at Equifax, and FICO Score 4 at TransUnion, versions that are decades old, because those are what Fannie Mae and Freddie Mac have historically required.5myFICO. FICO Scores Versions A fintech card issuer, meanwhile, might be pulling FICO 9 or 10. So the score behind your mortgage application and the score behind your credit card application can differ even when both come from the same bureau on the same day.
Industry-Specific Versions Look Different by Design
FICO also sells versions tuned for particular kinds of lending. Auto lenders can pull a FICO Auto Score, which puts extra weight on your history with vehicle loans. Card issuers can pull a FICO Bankcard Score, which leans harder on revolving-credit behavior.5myFICO. FICO Scores Versions These industry versions use a 250-to-900 range rather than the 300-to-850 range of base FICO scores.8Experian. What Is a FICO Auto Score A consumer with a base FICO of 720 might see an Auto Score of 750 with a clean vehicle-payment record, or a much lower number after a past repossession. The Bankcard Score can land somewhere else entirely if utilization is high.
Medical Debt Is Treated Differently by Different Models
The three bureaus voluntarily stopped reporting paid medical collections, put a one-year waiting period on unpaid medical debt before it hits a report, and removed medical collections under $500.9FICO. Medical Collection Removals Have Little Impact on FICO Scores VantageScore models 3.0 and 4.0 went further and excluded all medical collection data regardless of balance or age.10VantageScore. Major Credit Score News: VantageScore Removes Medical Debt Collection Records From Latest Scoring Models The same medical debt can affect one scoring model and be invisible to another.
The Score on Your Free App May Not Be a FICO Score at All
A lot of free credit-monitoring apps and bank dashboards show a VantageScore, not a FICO score. VantageScore is a competing model built jointly by the three bureaus, and its formula is different from FICO’s, so the free number often doesn’t match what a lender pulls. Equifax’s own free monitoring app, for instance, gives you a VantageScore.11Equifax. myEquifax App: Track Your Credit and Help Protect Your Identity
Both models use the same 300-to-850 scale, but the same number doesn’t translate to the same level of risk. The category labels don’t line up either: FICO calls 670–739 “good,” while VantageScore labels 661–780 as “prime.” The factor weights diverge too. VantageScore 4.0 puts 41 percent of the weight on payment history versus FICO’s 35 percent, and FICO puts 30 percent on amounts owed compared with 20 percent on utilization for VantageScore.3myFICO. How Are FICO Scores Calculated
There’s also a difference in who qualifies for a score at all. VantageScore can generate a score for someone with as little as one month of credit history and one account reported in the past two years. FICO requires at least one account open for six months with activity reported in the last six months. A person new to credit may see a VantageScore on a free app and then find that a lender pulling FICO comes back with no score.
Reporting Dates Shift Your Score From Day to Day
Even two scores from the same bureau using the same model can differ if they’re pulled on different days. Creditors typically report your balance and payment status once a month, and each one picks its own reporting date. One card issuer might report on the 1st, another on the 15th, a student loan servicer on the 8th.12Experian. How Often Is a Credit Report Updated With multiple creditors on different schedules, the data at any bureau can change day to day.13Equifax. How Often Does Your Credit Score Update
The timing matters most when a big balance moves. If you pay off $4,000 on a card on the 10th, and that issuer doesn’t report until the 20th, any score pulled between those dates still shows the old balance and higher utilization. A lender checking on the 12th sees one picture; the same lender checking on the 22nd sees a different, likely better one.
Free monitoring services add their own lag. Many update once a week, some only once a month, while a lender’s pull reflects the file at that exact moment. Treat the number on your app as a trend indicator, not a live reading.
Pull All Three Reports and Fix What’s Wrong
Because the three files are separate, an error on one report may not show up on the others, and that mismatch can be part of why 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 bureaus have made permanent. Through 2026, Equifax also offers six additional free reports per year through the same site.14Consumer Advice – FTC. Free Credit Reports
If something is wrong, a balance that’s incorrect, a late payment you made on time, or an account you don’t recognize, file a dispute with the bureau showing the mistake. Put it in writing, explain what’s wrong and why, and attach copies of anything that supports your version. Certified mail creates a record that the letter arrived.15Consumer 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 it must tell you the results within five business days after finishing. Submitting additional documents during that initial 30-day window can extend the investigation by up to 15 more days.16Consumer 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 confirms the data was wrong, it has to notify all three bureaus, not just the one you complained to.17Consumer Advice – FTC. Disputing Errors on Your Credit Reports Going straight to the source is often the fastest way to clean up an error that’s showing up in more than one place.