Three private companies hold the files that decide whether you get a mortgage, a car loan, a credit card, an apartment, or in some cases a job. They are Equifax, Experian, and TransUnion — the three major credit bureaus — and between them they keep a credit report on almost every adult in the United States. They do not lend money and they do not approve or deny applications. They collect information about how you borrow and repay, package it into reports, and sell those reports to lenders, landlords, insurers, and employers.
This guide explains what the three major credit bureaus are, what each one does, what information they collect, why your three reports are never identical, how bureaus differ from credit scores, and how to check your reports and fix errors. It is general educational information only, not personal financial advice. The facts below follow the Consumer Financial Protection Bureau (CFPB), which names the three bureaus and regulates how they operate, and the Fair Credit Reporting Act (FCRA), the federal law that governs them.
What Is a Credit Bureau?
A credit bureau — also called a credit reporting agency — is a company that collects your credit information and turns it into credit reports. The CFPB describes these businesses as companies that compile and sell credit reports. Banks, credit card issuers, auto lenders, mortgage servicers, and debt collectors send the bureaus data about your accounts: what you owe, what your limit is, whether you pay on time, and whether any account has gone to collections. The bureaus also check public records for bankruptcies and other court filings. All of that goes into a file in your name.
When you apply for credit, the lender buys your report from one or more of the bureaus and uses it to judge whether you are likely to repay. The bureau’s main job is to give the lender a clear picture of your credit history so the lender can make an informed decision. The bureau itself has no say in the decision — Experian confirms that bureaus do not make lending decisions. The lender decides; the bureau supplies the evidence. That distinction matters when something goes wrong: if a lender turns you down, the bureau is not the one to argue with, but if the report itself is wrong, the bureau is exactly the one to contact. Our guide to what a credit score is and why it matters explains how lenders turn the report into a decision.
The bureaus are regulated by the Fair Credit Reporting Act, codified at 15 U.S.C. 1681. The FCRA sets the rules: what information the bureaus can collect, how long negative information can stay on a report, who can see your report, and how you can dispute errors. Most negative information — late payments, collections, charge-offs — stays on a report for seven years; bankruptcies can stay for seven to ten years, depending on the type. The law also gives you the right to see your own reports and to challenge anything inaccurate.
Who Are the 3 Major Credit Bureaus?
The three major credit bureaus are Equifax, Experian, and TransUnion. The CFPB identifies them as the three nationwide providers of consumer reports, and they are the only three that hold files on nearly every credit-active adult in the country. Dozens of smaller reporting companies exist — the CFPB tracks them in its list of consumer reporting companies — but the big three are the ones that matter for almost every credit decision. Each keeps its own separate file on you, which is why your reports can differ.
Equifax is the oldest of the three, dating back to the late 19th century, and it maintains files on hundreds of millions of consumers and tens of millions of businesses worldwide. Like the other bureaus, it tracks your open accounts, balances, credit limits, and payment history, and it records public-record information such as bankruptcy filings. Equifax also sells credit monitoring and identity-theft protection products, and through 2026 everyone in the United States can get six additional free Equifax reports per year through AnnualCreditReport.com, on top of the standard free reports from each bureau.
Experian is a global information-services company with a major presence in the US credit market. Its database covers revolving accounts such as credit cards, instalment loans such as auto and student loans, and mortgages. Experian updates consumer files frequently as lenders submit new data, and it lets consumers opt into programmes that add nontraditional data — utility bills, phone bills, and rent payments — to their credit files, which can help people with thin credit histories. TransUnion entered the credit-reporting business in the 1960s, during the rapid growth of consumer lending, and it now tracks financial information for over 200 million consumers across the country, collecting the same core data: open accounts, payment history, credit inquiries, and account ages.
Despite their different histories, the three businesses are essentially the same. They collect the same kinds of data from the same kinds of sources, they sell reports to the same kinds of customers, and they make additional money selling consumers credit monitoring, identity-theft protection, and fraud protection. The competition between them is real but narrow: it is mostly about which lender buys which bureau’s report, and about whose monitoring product a consumer chooses. For you, the practical difference is not between the companies — it is between the three files they keep on you.
What Information Do the Bureaus Collect?
Your credit report has four main sections. The first is personal identity: your name, address, Social Security number, and date of birth. The second is credit accounts: every credit card, loan, and mortgage, with the type of credit, the amount extended, how much of it you are using, your repayment record, applications for new accounts, and the length of your credit history. The third is public records and collections: bankruptcies, foreclosures, repossessions, and debts sent to collection agencies. The fourth is inquiries: a record of who has asked to see your report, which is why applying for several loans in a short period leaves a visible trail.
The bureaus get this information from the companies you do business with. Banks and card issuers send account data every month; debt collectors report accounts they are pursuing; public records come from the courts. The bureaus combine it with data from other sources and compile it into the report. They do not verify every item with you first — they rely on the furnishers, the companies that supply the data, to report accurately. When a furnisher makes a mistake, the error lands on your report, and it stays there until someone corrects it. That is why checking your reports matters: the system assumes the data is right until you prove otherwise.
What the bureaus do not collect is just as important. They do not see your income, your bank balance, your race, your religion, or your medical history. They do not know what you earn or what you own — only what you owe and how you repay it. A high earner with maxed-out cards and late payments will have a worse report than a modest earner who pays on time. That is by design: the report measures borrowing behaviour, not wealth. Our guide to whether a 740 credit score is good explains what the numbers on the report actually mean in practice.
Why Your Three Reports Are Never Identical
Pull your three reports side by side and you will almost always find differences: an account on one report but not the others, a balance that is a month out of date on one bureau, a different number of inquiries. There are two reasons. First, not every lender reports to all three bureaus. A small credit union or a store card might report to only one or two, so that account exists on some reports and not on others. Second, updates reach each bureau at different times: a lender might send this month’s data to Experian on the 1st and to TransUnion on the 15th, so for two weeks the reports disagree about your balance.
Those differences produce different credit scores. Your FICO score at Equifax is calculated from the Equifax file; your FICO score at TransUnion is calculated from the TransUnion file. If the files differ, the scores differ — sometimes by 20 or 30 points. That is normal, not a sign of fraud, and it is why a lender that checks only one bureau can reach a different decision from a lender that checks another. It is also why you should check all three reports, not just one: an error on a single bureau’s file will only show up on that bureau’s report, and a lender that pulls that report will see it. Our guide to how to start building credit explains how a thin file grows into a full one.
Smaller reporting companies add another layer. Innovis is a fourth credit bureau with a smaller footprint. ChexSystems tracks bank-account closures and bounced cheques, which banks check before opening an account. PRBC tracks rent and bill payments. Tenant-screening, employment-screening, and insurance companies each have their own reporting firms. The CFPB’s list of consumer reporting companies covers them all, and you have the right to a free report from each of them too — but for most people, the big three are where the action is.
Credit Bureaus vs Credit Scores: What Is the Difference?
The bureaus hold your data. Scoring companies build the models that turn that data into a number. The two main scoring companies are FICO and VantageScore, and both produce scores on the same 300-to-850 scale. A lender buys your report from a bureau, runs a scoring model on it, and gets a score — or it buys the score directly from the bureau, which has already run the model. Either way, the bureau supplies the data and the model supplies the maths. The CFPB puts it plainly: credit bureaus hold your data, while scoring companies like FICO and VantageScore build the score models.
FICO is the older and more widely used model. Its five factors are payment history at 35% of the score, amounts owed at 30%, length of credit history at 15%, new credit at 10%, and credit mix at 10%. Payment history dominates because it is the best predictor of whether you will pay in future: a single 30-day late payment can cost 60 to 100 points on a good score. VantageScore uses the same data but weights the factors differently and treats some behaviours — such as paying a collection account — more forgivingly. A lender may use either model, and the two can disagree by 30 points or more on the same file, just as the three bureaus can disagree with each other.
The practical lesson is to watch the report, not just the score. The score is a snapshot that changes every time the underlying data changes; the report is the data itself. Fixing an error on the report raises the score on every model that reads it, while chasing the score without fixing the report is wasted effort. Check the report first, dispute what is wrong, and let the score follow. Our guide to low-interest loans explains why a higher score translates directly into cheaper borrowing.
How to Check Your Reports and Fix Errors
By law you can get a free copy of your credit report from each bureau, and all three bureaus now offer free weekly access through AnnualCreditReport.com on a permanent basis. That is the official site — the only one authorised by federal law — and the reports there are free without a credit card. Pull all three at once, compare them side by side, and look for accounts you do not recognise, balances that are wrong, late payments you did not make, and inquiries you did not authorise. Errors are common: credit reporting generated 2.8 million complaints to the CFPB in 2024, many of them about exactly these mistakes.
If you find an error, dispute it with the bureau that has it wrong — online, by phone, or by mail — and also dispute it with the furnisher, the company that supplied the bad data. The bureau must investigate, generally within 30 days, and must tell you the result. If the bureau agrees, the error is corrected or removed. If it does not, you can add a short statement to your file explaining your side, and you can file a complaint with the CFPB — but only after you have disputed directly with the bureau first. Keep copies of everything: the dispute, the response, and any supporting documents.
Two free protections are worth setting up while you are there. A security freeze, placed separately at each of the three bureaus, blocks anyone from opening new credit in your name until you lift it — and freezes are free under federal law. A fraud alert, placed at one bureau, is shared with the other two and tells lenders to take extra steps to verify your identity before opening an account. Neither affects your existing accounts or your credit score. Given that the bureaus’ files are the basis for nearly every credit decision you will face, checking them regularly and freezing them when you are not applying for credit is the cheapest insurance in personal finance.
Frequently Asked Questions
what are the 3 major credit bureaus
The three major credit bureaus in the United States are Equifax, Experian, and TransUnion. The CFPB identifies them as the three nationwide providers of consumer reports. Each collects information about how you borrow and repay, compiles it into credit reports, and sells those reports to lenders, landlords, insurers, and employers. Smaller reporting companies exist, but these three hold the files that matter for almost every credit decision.
do credit bureaus decide if you get a loan
No. Credit bureaus do not approve or deny credit — they collect and organise your credit information, and the lender makes the final decision. The bureau supplies the report, the lender reads it, runs a credit score model such as FICO or VantageScore, and decides. If a lender turns you down, the decision was the lender’s; if the report itself is wrong, the bureau is the one to contact.
how often can you check your credit report for free
You can get free weekly credit reports from Equifax, Experian, and TransUnion through AnnualCreditReport.com, the official site authorised by federal law, on a permanent basis. You can also get six additional free Equifax reports per year through the same site through 2026. The reports are free without a credit card — beware of lookalike sites that charge for them.
why is my credit score different at each bureau
Because each bureau keeps its own file, and the files differ. Not every lender reports to all three bureaus, so an account can appear on one report and not on another, and updates reach each bureau at different times. Your score is calculated from the file, so different files produce different scores — sometimes by 20 or 30 points. The differences are normal, which is why you should check all three reports.
how do i dispute an error on my credit report
Dispute it with the bureau that has the error — online, by phone, or by mail — and also with the company that supplied the wrong data. The bureau must investigate, generally within 30 days, and tell you the result. If it agrees, the error is corrected or removed. If it does not, you can add a statement to your file and file a complaint with the CFPB, but only after disputing with the bureau first. Keep copies of the dispute and the response.
The Bottom Line
The three major credit bureaus — Equifax, Experian, and TransUnion — are the record-keepers of American borrowing. They do not lend money and they do not decide who gets credit; they collect what lenders report, compile it into reports, and sell those reports to whoever is deciding. Because each bureau keeps its own file, your three reports — and your three scores — are never identical, and an error on one file will only show up on that bureau’s report. The FCRA gives you the right to see all three reports free every week through AnnualCreditReport.com, to dispute errors that must be investigated within 30 days, and to freeze your files for free. Use those rights: the cheapest way to protect your credit is to read the file the lenders are reading.