What Is a Credit Bureau? How Equifax, Experian, and TransUnion Work.

A credit bureau, known in federal law as a consumer reporting agency, is a private company that collects information about how consumers borrow and repay money, assembles it into credit reports, and sells those reports to lenders, landlords, insurers, and employers. Equifax, Experian, and TransUnion are the three nationwide bureaus in the United States.

The Fair Credit Reporting Act defines a consumer reporting agency at 15 U.S.C. § 1681a(f) and governs nearly everything the bureaus do. Under § 1681e(b), every bureau must follow reasonable procedures to assure maximum possible accuracy in each report it sells.

This guide covers the three nationwide bureaus. It does not cover specialty consumer reporting agencies, such as banking history or tenant screening databases, which follow the same federal law but track different records.

Key takeaways

• Equifax, Experian, and TransUnion are private, publicly traded companies, not government agencies.
• Bureaus do not approve or deny credit; they sell the reports and scores that lenders use to decide.
• Lenders report data voluntarily, so the three bureaus often hold different information about the same consumer.
• The FCRA guarantees free credit reports, a 30-day dispute process, and time limits on negative information.
• A bureau that violates the FCRA can be sued for negligent or willful noncompliance under 15 U.S.C. §§ 1681n and 1681o.

What do the three major credit bureaus actually do?

Credit bureaus collect account-level data from lenders, organize it into consumer files, and sell access to those files. When a consumer applies for a loan, the lender buys the applicant’s report, usually with a credit score calculated from it, and uses both to price or deny the application.

Each bureau maintains its own database of tradelines, inquiries, collection accounts, and public records. The bureaus are competitors, not branches of one organization, and they do not share tradeline data with one another.

Are Equifax, Experian, and TransUnion government agencies?

No. All three are for-profit corporations traded on public stock exchanges. Consumers never sign up with a bureau; lenders supply the data, and federal law, not a customer agreement, defines what the bureaus owe the people they report on.

Two federal regulators oversee the industry. The Consumer Financial Protection Bureau supervises the largest consumer reporting agencies directly, and the Federal Trade Commission enforces the FCRA alongside it.

Where do credit bureaus get their information?

Nearly all bureau data comes from furnishers: banks, credit card issuers, auto lenders, mortgage servicers, student loan servicers, and collection agencies that report account status to one or more bureaus, typically once a month.

• Lenders and servicers report balances, limits, and payment status on open accounts.
• Collection agencies report defaulted debts they own or service.
• Public records supply bankruptcy filings; tax liens and civil judgments were removed from bureau reports in 2017 and 2018.
• Inquiries are generated automatically whenever a report is pulled.

Rent, utility, and phone payments generally do not appear unless the consumer enrolls in a reporting service or the account defaults and lands in collections.

Why is a credit report different at each bureau?

Reports differ because furnishing is voluntary. A community bank might report to one bureau, a national card issuer to all three, and a small collector to none. Reporting dates also differ, so balances captured mid-cycle rarely match across bureaus.

The differences matter because a lender may pull only one report. An error, or a mixed file that blends two consumers’ records, can sit unnoticed at one bureau until it blocks an application.

How do the three bureaus compare?

The three nationwide bureaus perform the same legal function and owe consumers identical duties under the FCRA. They differ mainly in history, scale, and the side businesses built on top of their databases.

How do credit bureaus make money?

Bureaus earn revenue by selling consumer data, primarily to businesses. The consumer is the subject of the product rather than the paying customer, a structure that explains much of how the industry behaves.

• Selling credit reports and scores to lenders, insurers, landlords, and employers.
• Selling prescreened marketing lists for credit and insurance offers.
• Selling analytics, fraud prevention, and identity verification tools to businesses.
• Selling credit monitoring and score subscriptions directly to consumers.

What duties does a bureau owe consumers under the FCRA?

Congress passed the FCRA in 1970 to regulate an industry consumers cannot opt out of. The law imposes specific, enforceable duties on every consumer reporting agency.

1. Follow reasonable procedures to assure maximum possible accuracy under § 1681e(b).
2. Reinvestigate disputed information within 30 days and delete anything unverifiable under § 1681i.
3. Exclude most negative information after seven years, and Chapter 7 bankruptcies after ten, under § 1681c.
4. Provide free file disclosures to consumers under § 1681j.
5. Block information resulting from identity theft within four business days under § 1681c-2.

What happens when a consumer disputes an item with a bureau?

The bureau must forward the dispute to the furnisher and complete a reinvestigation within 30 days under § 1681i. If the furnisher cannot verify the item, the bureau must delete or correct it and send the consumer the updated results.

In practice, bureaus route disputes through e-OSCAR, an automated system that compresses each dispute into a short code. The FTC’s national accuracy study found that 1 in 5 consumers had an error on at least one report, which is why the dispute right matters.

How does a consumer get a report from each bureau?

Federal law entitles every consumer to free file disclosures from each nationwide bureau through AnnualCreditReport.com, the official source created under § 1681j. The bureaus now offer free reports through that site weekly, per FTC guidance.

Consumers also receive a free report after any adverse action, such as a credit denial, and when placing a fraud alert. Reviewing all three reports side by side is the only way to catch bureau-specific errors.

Do credit bureaus decide who gets approved for credit?

No. A bureau supplies data and scores; the lender sets its own approval criteria, chooses which bureau to pull, and makes the decision. Two lenders can review the same report and reach opposite conclusions.

The distinction matters when an application is denied. The adverse action notice names the bureau whose report was used, but the decision belongs to the lender. The bureau’s legal responsibility is the accuracy of the file, nothing more.

Can a consumer sue a credit bureau?

Yes. Section 1681o allows suits for actual damages caused by negligent FCRA violations, and § 1681n allows statutory damages between $100 and $1,000, plus punitive damages, for willful violations. Attorney fees are recoverable under both sections.

Most consumers start with a dispute and a complaint to the CFPB, which forwards complaints to the bureau and requires a response. Litigation typically follows only after a bureau fails to fix a documented error.

Frequently asked questions about credit bureaus

Which credit bureau is the most important?

None ranks above the others. Importance depends on which report a particular lender pulls. Mortgage lenders traditionally pull all three, while many card issuers and auto lenders pull one, and the choice varies by lender and region.

How many credit bureaus are there?

Three nationwide bureaus dominate consumer lending, but dozens of specialty consumer reporting agencies cover banking history, tenant screening, insurance claims, and employment. The CFPB publishes a list of these agencies each year.

Do the bureaus share information with each other?

Not routinely. Tradeline data stays within each bureau’s own database. Narrow exceptions exist: an initial fraud alert placed at one bureau must be relayed to the other two, and the prescreen opt-out system is jointly operated.

Can a consumer remove accurate information from a bureau report?

No. The FCRA only requires deletion of information that is inaccurate, unverifiable, or too old to report. Accurate negative items age off on the statutory schedule, seven years for most items and ten for Chapter 7 bankruptcy.

Why did a lender pull a different bureau than expected?

Lenders choose bureaus based on cost, data coverage in their market, and internal models. Nothing in federal law lets a consumer select which bureau a lender uses, which is why all three files should be kept accurate.

Last reviewed: June 2026

This article is for educational purposes only and does not constitute legal or financial advice. The Fair Credit Reporting Act and related regulations are complex, and outcomes depend on individual circumstances. Consumers with specific questions about their credit reports or rights under federal law should consult a licensed attorney or contact the Consumer Financial Protection Bureau directly.