The three credit reporting agencies are Equifax, Experian, and TransUnion. These are private companies that collect data about your borrowing and payment history, then sell that information to lenders, landlords, employers, and others who want to evaluate your financial reliability. While they all serve the same basic function, each bureau may have slightly different information about you, which is why your credit score can vary depending on which one a lender checks.
What Each Bureau Does
All three bureaus gather the same core types of data: your name, address, Social Security number, open and closed credit accounts, payment history, outstanding debts, and records of who has recently pulled your credit. They get this information from banks, credit card companies, auto lenders, mortgage servicers, and sometimes landlords or utility companies that report to them.
The bureaus then compile this data into a credit report and generate (or allow scoring companies to generate) a credit score, typically on a scale of 300 to 850. Lenders use that score and the underlying report details to decide whether to approve you for a loan, how much credit to offer, and what interest rate to charge. Landlords use it to screen tenants. Some employers check a version of your credit report during the hiring process, particularly for roles that involve handling money.
None of the three bureaus is government-run. They are for-profit companies regulated under the Fair Credit Reporting Act (FCRA), which sets rules on how they can collect, store, and share your information.
Why Your Scores Differ Across Bureaus
It’s common to see three different credit scores when you check all three bureaus. This happens for a few reasons. First, not every lender reports to all three agencies. Your credit card issuer might send updates to Experian and TransUnion but not Equifax, which means each bureau’s file on you contains slightly different account information.
Second, there are multiple scoring models. FICO and VantageScore are the two most widely used, and each has several versions. FICO even develops bureau-specific formulas, so your FICO Score 8 at Equifax may not match your FICO Score 8 at TransUnion, even if the underlying data were identical. The score you see when you check your own credit may also differ from the one a lender pulls, because they might use a different model version or pull from a different bureau.
A gap of 20 to 40 points between bureaus is not unusual and generally nothing to worry about. Larger gaps could signal that one bureau has an error or is missing a key account, which is worth investigating.
How to Check Your Reports for Free
Federal law entitles you to one free credit report from each bureau every 12 months. The only website authorized to fulfill that request is AnnualCreditReport.com. On top of the annual entitlement, all three bureaus have permanently extended a program that lets you check your report from each one every week at no cost through the same site.
Checking your own credit report is a “soft inquiry” and does not affect your score. It’s worth pulling all three reports rather than just one, since each bureau may have different data. Look for accounts you don’t recognize, incorrect balances, and late payments that were actually made on time. Even small errors can drag down your score and cost you money through higher interest rates.
Disputing Errors on Your Report
If you spot a mistake, you can file a dispute directly with the bureau that has the error. You can do this online through each bureau’s website, by mail, or by phone. Include any supporting documentation, such as bank statements or payment confirmations, that show the information is wrong.
Once a bureau receives your dispute, it generally has 30 days to investigate. If you filed the dispute after requesting your free annual report, the bureau gets 45 days instead. If you submit additional evidence during the investigation, the timeline can also extend by 15 days. After the investigation wraps up, the bureau has five business days to notify you of the outcome and send you an updated copy of your report.
When a creditor corrects information as a result of your dispute, it is required to forward that correction to every bureau it originally reported the wrong data to. Still, it’s smart to check all three reports afterward to confirm the fix went through everywhere.
Other Reporting Agencies Beyond the Big Three
Equifax, Experian, and TransUnion get most of the attention, but they are not the only companies tracking your financial behavior. Dozens of specialty consumer reporting agencies collect narrower slices of data. Some focus on checking account history and track whether you’ve had accounts closed for overdrafts or fraud. Others compile data on insurance claims, rental history, employment background, or utility and telecom payments.
These specialty reports matter because they show up in specific situations. A bank may check your checking account history before letting you open an account. A landlord may use a tenant screening report. An insurer may pull a claims history report when you apply for coverage. Under federal law, you have the right to request a copy of any consumer report a company maintains on you, and you can dispute errors in those reports just as you would with the big three bureaus. The Consumer Financial Protection Bureau maintains a list of these specialty agencies on its website.
Which Bureau Matters Most
No single bureau is more important than the others in an absolute sense, but the one that matters most to you at any given moment is whichever one your lender checks. Mortgage lenders typically pull reports from all three and use the middle score. Credit card issuers and auto lenders often check just one, and which one they prefer varies by company. You generally cannot choose which bureau a lender pulls from.
Because you can’t predict which report will be used, treating all three equally is the practical move. Check each one regularly, dispute errors wherever they appear, and make sure your positive payment history is showing up across all three bureaus. If a creditor only reports to one or two, you can ask them to report to the third, though they are not required to do so.