Credit Bureaus Explained: Experian, Equifax, and TransUnion Compared

Experian, Equifax, and TransUnion are the three credit bureaus, and each one keeps a completely separate file about you. That single fact explains most of the confusion in credit: different bureaus showing different balances, different inquiries, even different accounts, and different scores from the same day. "Is Credit Karma accurate?" gets a complicated answer for exactly this reason, and "TransUnion vs Equifax" is a real question because the two files genuinely disagree. Here is how the bureaus work, why your scores differ, and how to manage your files without paying anyone.

What the Three Credit Bureaus Actually Do

The bureaus do not make lending decisions. They collect data that lenders, collection agencies, and public records report to them, then sell that data back to lenders in the form of credit reports and the scores built on them. The Consumer Financial Protection Bureau regulates how they handle disputes and how they market credit monitoring, but the CFPB does not set your score. Neither does any bureau. Your score is calculated by scoring models like FICO and VantageScore using the data a bureau holds.

The three files are built the same way, but they are fed differently. A card issuer might report your payment to all three bureaus, or to only one. A small credit union often reports to a single bureau. A collection agency might report a debt to two of them. Nothing forces identical reporting, so after a few years of activity your three files drift apart. That drift is normal, and it is the root cause of almost every "why did my score drop" mystery.

TransUnion vs Equifax: Why Your Scores Differ

People pull a TransUnion score and an Equifax score expecting them to match, then assume one of them is wrong when they do not. Neither is wrong. The gap is almost always a data gap, not a scoring error.

	Equifax	TransUnion
Part of	The big three bureaus	The big three bureaus
Data source	What lenders report to Equifax	What lenders report to TransUnion
Scoring models	FICO, VantageScore	FICO, VantageScore
Common cause of score gap	An account missing from one file	An account missing from the other

The mechanics behind a 20 to 40 point gap:

Incomplete reporting. Some lenders report to only one or two bureaus, so an account that exists on your TransUnion file may be entirely absent from Equifax. A new credit card, an old collection, or a paid-off loan can show up on one file and not another.
Timing lags. Lenders report to each bureau on their own schedule, sometimes weeks apart. A balance you paid off this week may already be zero on one bureau and still high on the other.
Different balances. The same card can show different balances on each file because each bureau records whatever the lender sent at the moment it was reported.
Different inquiries. Not every lender pulls all three bureaus, so a hard inquiry can appear on one file and not the others.

A gap caused by a missing account, a wrong balance, or an inquiry you never authorized is worth disputing. A gap caused by normal reporting differences is not an error, and chasing it will not change anything. What matters is that all three files are accurate, because the lender who pulls your file will use whatever is on that file. If you have ever closed a card and wondered why your score moved, the answer lives in these reporting differences too, since a closed account can vanish from one bureau's file while lingering on another's. We walk through that scenario in our guide to closed accounts on your credit report.

Is Credit Karma Accurate?

The short answer is yes, with an important caveat. Credit Karma pulls real files from Equifax and TransUnion and shows you the VantageScore 3.0 built on them. The data it shows is genuinely what those two bureaus hold, and it updates as they update. As a monitoring tool, it is accurate: it reliably catches new accounts, new inquiries, and balance changes on two of the three bureaus.

The caveat is that VantageScore 3.0 is not the FICO score most lenders use. FICO and VantageScore both run from 300 to 850, but they weigh your data differently, so your VantageScore can sit 30 to 60 points away from the FICO score a lender actually pulls. A lender deciding on a mortgage or auto loan is far more likely to use a FICO model than your Credit Karma number.

So Credit Karma is the right tool for monitoring, and the wrong tool for predicting your exact approval odds. When you are about to apply for credit, check the score your card issuer gives you if it is a FICO score, or buy a FICO score directly. Treat any single free score as a snapshot, not the verdict. If your free score and your real approval experience keep disagreeing, the issue is usually the model, not the bureau, and we explain the differences in our credit score hub.

How to Delete an Experian Account

If you signed up for Experian's free credit monitoring or a paid tier and want out, deleting the account is simple. Three things are being conflated in most searches, so separate them first:

The account you created at Experian.
The credit file Experian keeps on you.
Any paid subscription attached to that account.

To delete your Experian account:

Log in at experian.com and go to Account Settings.
Look for "Close your account" or "Deactivate your account." The exact label varies by product.
Confirm the closure. If you have a paid subscription, cancel it separately so it does not auto-renew.
Download anything you want to keep before closing, like a PDF of your current report.

Two things you should know before you do it. Closing your Experian account does not delete your credit file. Experian is a bureau; it holds your credit data by law and will keep holding it whether or not you have a monitoring account. Second, if your actual goal is protecting your file, the smarter move is a credit freeze, which blocks new credit checks, is free under federal law, and does far more than canceling a monitoring product. Freezing your file does not require an Experian account at all. If you are more concerned about verifying that your existing file is complete before you apply for anything, our verify your credit profile walkthrough covers what to check on each bureau's report.

How to Read Your Free Credit Reports

Federal law entitles you to a free credit report from each bureau every 12 months at AnnualCreditReport.com, the only federally authorized source. Weekly free access at that site has been the norm in recent years, and the baseline annual guarantee still applies to all three bureaus.

Pull all three at once and compare them side by side:

Accounts. A credit card that appears on Equifax but not TransUnion is usually normal reporting behavior. Verify it is an account you actually opened.
Balances and limits. A balance that differs by a few dollars is a reporting lag. A limit that differs by thousands is worth a closer look.
Inquiries. An inquiry on one file that you do not recognize is a red flag worth disputing immediately, especially if the other two files do not have it.
Personal information. A wrong address on a single file is often the first sign of mixed or fraudulent data.

Disputes go to the bureau that holds the wrong data. Each bureau runs its own dispute portal, and under the Fair Credit Reporting Act it generally has 30 days to investigate. Disputing an error with Equifax does not fix TransUnion. You repeat the process on every file that contains the error. The exception is accounts you never opened at all: if the identity theft risk is real, a credit freeze on all three bureaus is the correct first response, not a dispute. How far a single hard inquiry moves a score and how many are too many is a question we answer separately in our hard inquiries guide.

Why the Three-Bureau Problem Matters for Borrowing

Lenders do not all pull the same bureau. Some pull one, some pull two, and mortgage lenders typically pull all three and price off your middle score. That has a direct dollar consequence: the bureau with the weakest file is the one that sets your rate.

Run the numbers on a $300,000 mortgage. A borrower quoted 6.25% pays about $1,847 a month. A borrower quoted 7.25% pays about $2,047. That one point of rate is roughly $200 a month and about $72,000 in interest over a 30-year term, and the difference can come down to which bureau the lender happened to pull. A score that reads "very good" on TransUnion and "fair" on Equifax can cost real money if the lender pulls Equifax.

That is why the correct habit is not "keep my score above X." It is "keep all three files accurate." You cannot control which bureau a lender pulls, but you can control what each bureau has on file about you.

What the Bureaus Report and What They Skip

The three bureaus collect the same broad categories, but not every detail of your financial life shows up. Knowing what is on a credit file saves you from being surprised later:

Revolving accounts. Credit cards and lines of credit, including the balance, limit, and payment history. This is the data that drives utilization, which is the second-biggest factor in most scoring models.
Installment accounts. Auto loans, student loans, mortgages, and personal loans, with the original amount, current balance, and on-time history.
Public records. Bankruptcies and, in some states, civil judgments and tax liens. Bankruptcies can stay for up to 10 years.
Inquiries. Hard inquiries from applications sit on the file and count for roughly two years, though their effect on scores fades after about a year. Soft inquiries from your own checks or pre-approved offers are visible to you but not to lenders.

What does not belong on a standard credit file: your income, your bank account balances, your employment history (aside from what you put on an application), and everyday bills like rent and utilities, unless they are reported as a special program or go to collections. A landlord who pulls your file will see your credit, not your rent ledger. If you want rent and utility payments to help you, you need a service that reports them, and even then it only helps if you can afford to keep your history clean everywhere else.

This is also where building your first file comes in. With no open accounts and no history, a bureau holds an empty file and the models return no score at all, which is what it means to be "credit invisible." The reliable path to your first score is covered step by step in our guide to building credit, and it works because a single card reported to even one bureau for six months gives the models something to calculate.

Common Credit Bureau Mistakes

Watching one score as if it were your only score. If the score you watch is from a single bureau, you are blind to the other two-thirds of your credit life.
Paying for a credit score. Your free reports at AnnualCreditReport.com give you the raw files. Your card issuer likely gives you a free FICO or VantageScore. A paid score product adds almost nothing.
Treating Credit Karma as your approval score. Use it to monitor. Apply for credit expecting your Credit Karma number and you can be unpleasantly surprised.
Deleting a bureau account to "protect" your credit. It removes a monitoring product, not your file. Freeze your credit instead.
Disputing only one bureau. Errors fixed on one file still hurt you if the lender pulls a different one.
Checking your reports once a year and forgetting them. Reporting errors accumulate silently. A quick annual review of all three files is a small task with a large payoff.

FAQ

Why do my credit scores differ between bureaus? Because each bureau holds a different version of your data. Lenders report to them on different schedules, and some accounts never reach all three.

Is Credit Karma accurate? The data is real, but the score is a VantageScore, not the FICO most lenders use. Use it for monitoring, not for predicting approval odds.

Does closing my Experian account delete my credit report? No. It stops your monitoring product. Experian still holds your credit file, and it is required to.

How often can I check my credit report for free? You are guaranteed one free report from each bureau every 12 months at AnnualCreditReport.com. Weekly access has been available in recent years.

Which bureau is most accurate? None of them. They are all just record keepers, and their files can all contain errors. Check all three.

Can I freeze my credit instead of deleting accounts? Yes, and for most people it is the better move. A freeze blocks new credit checks, costs nothing under federal law, and does not require any bureau account.

The Bottom Line

The three credit bureaus are separate record keepers, and your job is to keep all three files clean rather than chase one score. Pull your free reports, compare them, dispute errors on every file that has them, and freeze your credit if you are not actively borrowing. A credit file is not an asset that grows; it is a record that protects you from paying more than you should. Keep the record right and let your money do the real work with our Net Worth Calculator and Compound Interest Calculator.

Related Calculators

Sources

This article is for educational purposes only and is not financial advice. Consult a qualified professional before making financial decisions.