Why Are My Experian and TransUnion Scores Different?
Your Experian and TransUnion scores are different because each bureau has different information about you. Not because one is wrong. Lenders do not always report to all three, the bureaus update on their own schedules, and your score may even be calculated with a different model at each one.
People assume a credit score is one fixed fact about them, so seeing two different numbers feels like a mistake somebody needs to fix. It is not a mistake. Experian, Equifax, and TransUnion are three separate companies, each keeping its own file on you, and those files rarely match perfectly. Once you understand what actually creates the gap, you can tell the difference between a harmless quirk and a real error worth chasing.
Here is why the two diverge, when the gap is fine, and when it is costing you.
The real reasons they diverge
Each bureau runs the same core scoring factors, the ones in the chart. The difference is the data those factors get applied to.
Three things drive most of the gap:
- Different data. Lenders are not legally required to report to all three bureaus. So a credit card, a loan, or a collection might show up on Experian but not on TransUnion, and that changes the score.
- Different timing. Bureaus update on their own schedules. If a card reports a $4,000 balance to one bureau and then you pay it down before it reports to the other, one bureau shows high utilization and the other shows low.
- Different models. Your lender might pull a FICO version from one bureau and a different score from another, and those models weigh things slightly differently.
Stack those together and two bureaus can land dozens of points apart on the same person, on the same day.
When the gap is nothing to worry about
Here is the concession that saves you a lot of stress: most of the time, a gap is normal and harmless.
A few points of difference, or one bureau lagging because a payment has not posted there yet, is just the system working as designed. It usually evens out as everyone updates. So do not treat every discrepancy as a crisis or start firing off corrections at a bureau that is simply a week behind. Chasing a harmless gap wastes the effort you should be spending on the reports that actually decide a loan. This is different from the FICO-versus-VantageScore gap, which is about models rather than bureaus; we cover that in why your VantageScore is higher than your FICO.
When the gap is actually costing you
Sometimes, though, the difference is real money, and it is worth acting on.
If one bureau is missing a positive account the others have, or carrying an error, a wrong late payment, a paid collection still showing a balance, an account that is not yours, that bureau can drag you down exactly when it counts. And it counts most on a mortgage, where the lender pulls all three and qualifies you on your middle score. We explain that in middle mortgage score explained. A single weak bureau can become your middle and set your rate, so an error you never noticed on the bureau you never check can quietly cost you thousands.
What to do about it
You cannot force every lender to report to every bureau. You can make sure all three of your reports are accurate, which is the part that is actually in your control.
Pull all three at AnnualCreditReport.com and read them separately, side by side. Look for the account that is missing on one, or the error sitting on just one. Then fix the weak bureau: remove genuine mistakes and get utilization down on the cards that report there.
You can compare three reports by hand. Or Credit Booster AI reads all three, shows you exactly where the bureaus disagree, flags the errors, drafts the removal letters, and tracks each one. Free on iOS and Android. Fixing genuine mistakes on your weakest bureau is where most people find 30 to 60 points, and that is the bureau most likely to become your middle score when a lender pulls all three.
Related reading: See how many credit scores you have, the bi-merge versus tri-merge report, and why VantageScore runs higher than FICO. For the full explanation, read why your credit scores are different.
Same five factors, different data at each bureau
Every bureau runs these factors, but only on the accounts it actually has on file for you.
Source: FICO, myFICO (what's in your FICO score). Pulled July 20, 2026.
Table view
| Item | Share of a FICO score |
|---|---|
| Payment history (whether you pay on time) | 35% |
| Amounts owed (mostly utilization) | 30% |
| Length of history (how old your accounts are) | 15% |
| New credit (recent applications) | 10% |
| Credit mix (cards, loans, mortgage) | 10% |
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Get the AppFrequently Asked Questions
Why are my Experian and TransUnion scores different?
Because each bureau holds different data about you. Lenders are not required to report to all three, so an account can appear on one bureau and not another. Bureaus also update on different schedules, and your score may be calculated with a different model at each one. All of that adds up to different numbers.
Which bureau has the most accurate score?
None is more accurate; they are just working from different data. The bureau that matters is whichever one your lender pulls, and that varies by lender and loan type. A mortgage uses all three at once; a card issuer may use just one.
How big can the gap between bureaus be?
It varies, but differences of a few points to several dozen are normal. A large gap usually means one bureau is missing an account the others have, or is carrying an error or an out-of-date balance the others do not.
Should I check all three bureaus?
Yes. An error or a missing account on one bureau can quietly cost you, especially for a mortgage that uses all three. Your free annual report at AnnualCreditReport.com covers Experian, Equifax, and TransUnion, so you can compare them side by side.
How do I fix a gap between bureaus?
Find out which bureau is lagging and why. If it is missing a positive account, that account's lender may not report there. If it is carrying an error, remove it. Cleaning up the weak bureau can add 30 to 60 points to that report, which matters most when a lender pulls all three.
