What Are the Three Major Credit Bureaus and Their Roles?

The three major credit bureaus in the United States are Equifax, Experian, and TransUnion. Each one collects information about how you borrow and repay money — credit cards, loans, mortgages, payment history, public records — and packages that information into credit reports that lenders, landlords, and insurers use to size you up. Federal law gives you a free copy of your report from each bureau every 12 months through AnnualCreditReport.com, and all three now offer free weekly access through that same site on a permanent basis.¹

Equifax

Equifax is the oldest of the three, dating back to the late 19th century. It keeps files on hundreds of millions of consumers and tens of millions of businesses worldwide. Its reports show your open accounts, balances, credit limits, and whether you pay on time, along with public-record items such as bankruptcy filings. Equifax also sells its own credit-monitoring and identity-theft protection products.

Through 2026, everyone in the country can get six additional free Equifax reports per year through AnnualCreditReport.com, on top of the standard annual report each bureau provides.¹

Experian

Experian is a global information-services company with a large U.S. credit-reporting operation. Its database covers revolving accounts like credit cards, installment loans such as auto and student loans, and mortgages.² Files are updated frequently as lenders submit new data.

Experian is distinctive in one respect: it lets consumers opt in to programs that add nontraditional data — utility bills, phone bills, rent payments — to their credit files. For someone with a thin credit history, those alternative data points can round out a record of on-time payments that traditional lenders would otherwise miss.

TransUnion

TransUnion entered credit reporting in the 1960s, during a period of rapid growth in consumer lending. It currently tracks financial information for over 200 million consumers nationwide. Like the other two bureaus, TransUnion collects details on your open accounts, payment history, credit inquiries, and account ages, and compiles that data into reports used by lenders, landlords, and insurers.

Why Your Three Reports Won’t Match

Your reports from Equifax, Experian, and TransUnion will not look identical. Not every lender reports to every bureau — some report to only one or two. Lenders also send updates on different schedules, so a payment posted last week may show up on one report before the others. Balances, credit limits, and even the list of accounts on each report can differ at any given moment.

That is why it pays to review all three rather than relying on just one. An error or a missing account on one report may not appear on the others, and finding a discrepancy early gives you time to fix it before a loan application forces the issue.

How to Get Your Free Credit Reports

The only website authorized by federal law to provide your free annual credit reports is AnnualCreditReport.com. You can also request them by calling 1-877-322-8228 or by mailing a completed Annual Credit Report Request Form to Annual Credit Report Request Service, P.O. Box 105281, Atlanta, GA 30348-5281.¹

Under the Fair Credit Reporting Act, each bureau must provide one free report every 12 months on request through this centralized system.³ On top of that, the three bureaus have permanently extended a program that lets you pull each report once a week for free through the same site.¹

To request online, you’ll need your name, Social Security number, date of birth, and current address. The site verifies your identity with security questions drawn from your financial history, such as the approximate monthly payment on a past mortgage. If you can’t clear the online check, request the reports by mail with copies (not originals) of a government-issued ID and a document showing your current address.

Each report shows your open and closed accounts, balances, payment history, hard inquiries from lenders, and negative marks such as collections or late payments. One thing they don’t include: your credit score. Scores are calculated separately from the data in your report, and you can often get one free through your bank, credit card issuer, or directly from a bureau.⁴

Fixing Errors on Your Report

The Fair Credit Reporting Act, codified at 15 U.S.C. § 1681, is the federal law that governs how the bureaus collect, maintain, and share your information. It requires them to follow reasonable procedures to keep your data accurate, relevant, and private.⁵

If you spot an error, you have the right to dispute it directly with the bureau that issued the report. Once the bureau receives your dispute, it generally has 30 days to investigate. That window extends to 45 days if you filed the dispute after receiving your free annual report, or if you submit additional information during the investigation.⁶ If the bureau cannot verify the disputed information, it must remove or correct it.

If more than 45 days go by without resolution, or if the bureau resolves the dispute but you believe the outcome is wrong, you can file a complaint with the Consumer Financial Protection Bureau. You have to dispute with the bureau first; if you skip that step, the CFPB will close the complaint once the bureau notifies them.⁷ Complaints can be filed at the CFPB website or by phone at (855) 411-2372, Monday through Friday, 9 a.m. to 6 p.m. Eastern Time.

Freezing Your Credit and Setting Fraud Alerts

If you’re worried about identity theft, or you just want to keep anyone from opening accounts in your name, federal law gives you two tools that work directly on the bureaus.

Security Freeze

A security freeze blocks the bureau from releasing your credit report to new creditors. Because most lenders will not approve an application without pulling a report, a freeze effectively prevents new accounts from being opened in your name. Placing and lifting a freeze is free. If you request one by phone or online, the bureau must place it within one business day, and it must lift a freeze within one hour of an electronic or phone request.⁸ You have to place and lift the freeze separately with each of the three bureaus.

Some bureaus also sell a “credit lock” product that works similarly but is a proprietary service, often bundled with paid subscriptions. Locks are not governed by the same statutory protections as a freeze.

Fraud Alerts

A fraud alert doesn’t block access to your report. It tells lenders to take extra steps to verify your identity before opening an account. An initial fraud alert lasts one year and is available to anyone who suspects they are or may become a victim of fraud. You only need to contact one bureau to set it up; that bureau is required to notify the other two.⁸

If you have already been a victim of identity theft and have filed a report with the FTC at IdentityTheft.gov or with law enforcement, you can place an extended fraud alert that lasts seven years. An extended alert also requires the bureaus to remove you from marketing lists for unsolicited credit and insurance offers for five years.⁹

1
Federal Trade Commission. Free Credit Reports
2
Experian. Check Your Free Credit Report (Updated Daily)
3
Office of the Law Revision Counsel. 15 USC 1681j – Charges for Certain Disclosures
4
Consumer Financial Protection Bureau. What Is the Difference Between a Credit Report and a Credit Score?
5
Office of the Law Revision Counsel. 15 USC 1681 – Congressional Findings and Statement of Purpose
6
Consumer Financial Protection Bureau. How Long Does It Take to Repair an Error on a Credit Report?
7
Consumer Financial Protection Bureau. Credit and Consumer Reporting Complaint Notice
8
Office of the Law Revision Counsel. 15 USC 1681c-1 – Identity Theft Prevention; Fraud Alerts and Active Duty Alerts
9
Consumer Advice – FTC. Credit Freezes and Fraud Alerts