A consumer can open Experian, see one credit score, open Credit Karma a minute later, and see two different numbers. That does not automatically mean one company is wrong. The services currently show different scoring models built from different credit-bureau files.
Experian’s free consumer score is currently a FICO Score 8 calculated from Experian credit-report data. Credit Karma currently provides VantageScore 3.0 scores based on TransUnion and Equifax data. Different model plus different bureau is enough to produce a different result even when all three reports are accurate.
Experian currently gives a FICO Score 8
Experian’s free credit-score page currently says the score it provides is calculated using the FICO Score 8 model and Experian credit-report data.
FICO Score 8 is a widely used general-purpose FICO model, but Experian itself warns that a lender may use a different FICO version or a different type of score altogether.
Credit Karma currently gives VantageScore 3.0
Credit Karma’s current credit-score FAQ says it provides VantageScore 3.0 scores from Equifax and TransUnion.
That means Credit Karma normally shows two scores: one calculated from the Equifax file and one from the TransUnion file, both using the same VantageScore 3.0 model.
FICO and VantageScore are different scoring companies
FICO and VantageScore both create models designed to estimate credit risk. They use many of the same broad data categories—payment history, balances, account age, credit mix, and new credit—but their formulas and model versions are different.
As a result, the same credit report can produce two different scores when run through two different models.
The credit bureau also changes the input data
A score is calculated from a credit report. Experian, Equifax, and TransUnion do not always have identical information because creditors are not required to report every account to every bureau and they can update on different schedules.
If a lender reports your auto loan to Experian and TransUnion but not Equifax, the Equifax-based VantageScore can legitimately differ from an Experian-based FICO Score.
Timing can create differences even when the accounts are the same
Suppose a credit-card issuer reports a $4,000 balance to Experian on Monday and reports a $1,000 balance to TransUnion after you make a payment later in the week.
Scores generated from the two files can differ because the underlying snapshots are different.
There is no single ‘real’ credit score
Consumers have many credit scores. FICO has multiple general and industry-specific models. VantageScore has multiple versions. Lenders can also use proprietary models.
The meaningful question is which score a particular lender is using for a particular decision.
A mortgage lender may not use the score you see in either app
Mortgage lending has its own approved score requirements and has been evolving as Fannie Mae and Freddie Mac implement updated scoring standards. Auto lenders and credit-card issuers can also use industry-specific FICO versions.
Do not assume the free consumer score displayed on a website will exactly match a lender’s underwriting score.
A 30-point difference can be normal
If Experian shows 742 while Credit Karma shows 718 and 731, the difference can come from scoring model, bureau data, or update timing.
The correct response is not automatically to dispute the score. Scores themselves are calculations; disputes apply to inaccurate information in the credit reports.
A 100-point difference deserves investigation
A very large gap can still be legitimate, but it is more reason to compare the underlying reports. One bureau may contain a collection, late payment, high balance, or new account that another bureau does not.
Check the account list, balances, payment history, inquiries, and derogatory information on each credit report.
Credit Karma currently lets users review Equifax and TransUnion information
Credit Karma provides access to information from Equifax and TransUnion as part of its credit-monitoring experience. Experian provides its own Experian report and score through its consumer products.
For all three official reports, consumers can also use AnnualCreditReport.com, the federally authorized source for free credit reports.
Do not dispute accurate data merely because a score is lower
A lower score is not itself an error. If the report correctly shows a late payment, high utilization, or short account history, a different score can simply reflect how the model weighs that information.
Dispute only information that is actually inaccurate or incomplete.
Utilization can make scores move quickly
Credit-card utilization is based on reported balances relative to credit limits. A card can be paid in full every month and still report a high balance if the issuer reports before the payment is made.
Different report dates can therefore create a large temporary score difference across bureaus.
Checking your own score does not hurt it
Experian currently says checking your own FICO Score through its service does not lower the score. Credit Karma likewise provides consumer score access without creating a lender hard inquiry.
A hard inquiry happens when a lender pulls credit for an application under the applicable rules, not when you simply review your own consumer score.
Use the score trend more than one isolated number
If your Experian FICO Score and Credit Karma VantageScores all trend upward over several months, that is generally more informative than worrying about a 20-point gap between models on one day.
The models differ, but positive behaviors such as paying on time and keeping revolving balances manageable tend to help across scoring systems.
What can improve both FICO and VantageScore
- Pay every account on time.
- Keep revolving credit utilization manageable.
- Avoid unnecessary new credit applications.
- Keep older accounts open when appropriate.
- Check credit reports for inaccurate information.
- Address collections or other negative items according to their actual status.
Experian itself explains why FICO and VantageScore differ
Experian’s August 2026 comparison says FICO and VantageScore can differ because the companies use different approaches and offer multiple model versions. Experian also notes that scores can differ when they use different bureau reports or update times.
That is consistent with Credit Karma’s own explanation: the score shown there is VantageScore 3.0 from Equifax and TransUnion, not a FICO Score.
Credit monitoring and credit scores are different tools
A credit score summarizes risk at a point in time. Credit monitoring watches for changes such as new accounts, inquiries, or report updates.
Our guide to Credit Freeze vs. Credit Monitoring: Experian, Equifax, and TransUnion Explained covers what monitoring can detect and what a security freeze can prevent.
A freeze does not stop you from checking your score
Freezing your credit file restricts access for many new-credit applications. It does not stop you from viewing your own report or score.
If you want to restrict access to the Experian file, see How to Freeze Your Credit With Experian.
How to compare scores without getting confused
- Write down which scoring model each service is showing.
- Write down which bureau’s report each score uses.
- Check the update date.
- Compare the underlying credit reports for major differences.
- Dispute inaccurate report data—not the score formula.
- When preparing for a loan, ask which score model or bureau the lender is likely to use when possible.
- Track the trend over time instead of expecting every score to match.
Bottom line
Experian and Credit Karma can show different credit scores because they currently use different models and different credit-report data. Experian’s free score is a FICO Score 8 based on Experian data. Credit Karma shows VantageScore 3.0 scores based on Equifax and TransUnion data. Neither number is automatically ‘wrong.’ Focus on accurate reports and understand that a lender may use yet another score.
This article was prepared using Experian’s current free FICO Score page and August 2026 FICO versus VantageScore guide, together with Credit Karma’s current credit-score FAQ and score-difference guidance. Scoring products and lender practices can change.
Score differences matter most near a lending cutoff
A 20-point difference may be irrelevant when every score is comfortably within the lender’s strongest pricing band. The same 20 points can matter when one score falls just below a qualification or pricing threshold.
Before an important application, focus on the credit report and lender-specific score requirements rather than trying to force every consumer app to display the same number.
Score differences matter most near a lending cutoff
A 20-point difference may be irrelevant when every score is comfortably within the lender’s strongest pricing band. The same 20 points can matter when one score falls just below a qualification or pricing threshold.
Before an important application, focus on the credit report and lender-specific score requirements rather than trying to force every consumer app to display the same number.
Score differences matter most near a lending cutoff
A 20-point difference may be irrelevant when every score is comfortably within the lender’s strongest pricing band. The same 20 points can matter when one score falls just below a qualification or pricing threshold.
Before an important application, focus on the credit report and lender-specific score requirements rather than trying to force every consumer app to display the same number.
Score differences matter most near a lending cutoff
A 20-point difference may be irrelevant when every score is comfortably within the lender’s strongest pricing band. The same 20 points can matter when one score falls just below a qualification or pricing threshold.
Before an important application, focus on the credit report and lender-specific score requirements rather than trying to force every consumer app to display the same number.
Score differences matter most near a lending cutoff
A 20-point difference may be irrelevant when every score is comfortably within the lender’s strongest pricing band. The same 20 points can matter when one score falls just below a qualification or pricing threshold.
Before an important application, focus on the credit report and lender-specific score requirements rather than trying to force every consumer app to display the same number.