1 in 5 Americans has an error on their credit report.

Your name is misspelled, an old address remains listed, your Social Security number has a digit transposed, or your date of birth is incorrect.

Bureaus aggregate data from thousands of sources. When furnishers submit data, small discrepancies in name spelling or address can cause information to attach to the wrong consumer file — or fail to match correctly, creating a mixed file.

Personal information errors can cause legitimate accounts to not appear on your report (lowering available credit history) or cause someone else's accounts to appear on yours (damaging your score and raising identity theft concerns).

An account appears on your report that you never opened — a credit card, loan, or line of credit with a creditor you have no relationship with.

This can result from a mixed file (your file merged with a person who has a similar name or SSN), identity theft (someone opened an account using your information), or an authorized user arrangement that wasn't properly disclosed.

Unrecognized accounts — especially delinquent or maxed-out ones — can severely damage your score. They also signal possible identity theft that needs immediate action beyond a dispute.

An account that you paid off and closed still shows as open. A debt that was paid in full still shows as delinquent. A settled account shows as charged-off with a balance remaining.

Furnishers don't always update their records promptly — or at all. A creditor that sold a debt to a collector may continue reporting the original delinquency even though they no longer own the debt.

An account showing open when closed incorrectly increases your apparent utilization or debt load. An account showing delinquent when paid is one of the most damaging inaccuracies on a credit report — a single 30-day late payment can drop a score by 60–90 points.

Your reported balance is higher than your actual balance. Your credit limit is reported lower than your actual limit. A paid account still shows a balance.

Credit card companies report balances at different times in the billing cycle. Data entry errors, delays in reporting, and system mismatches between furnisher and bureau records all contribute to balance inaccuracies.

Your credit utilization ratio — balances divided by total credit limits — accounts for roughly 30% of your FICO score. Even a few hundred dollars in incorrect balances or a lower-than-actual credit limit can meaningfully damage your utilization percentage.

The same debt appears more than once on your credit report — often after a debt is sold from an original creditor to one or more collection agencies, each of which also reports the account.

When a creditor sells a debt, both the original creditor (showing a charge-off) and the new collector (showing an active collection) may report the same underlying debt. In some cases, a debt passes through multiple collectors, resulting in three or more entries for a single obligation.

Duplicate accounts make your report look more delinquent than it is. They inflate the apparent number of collection accounts, the total negative balance, and in some models, the number of recent derogatory marks.

A negative item — collection, charge-off, late payment, judgment — is still appearing on your report after its legal reporting window has expired.

The FCRA requires most negative items to be removed after 7 years from the original date of delinquency. Bureaus should remove these automatically, but the system isn't perfect. Items sometimes persist through data re-aging (when a collector reports a new delinquency date to reset the clock).

An outdated collection or charge-off costs you score points it has no legal right to cost you. Re-aged items — where the delinquency date has been falsely moved forward — are particularly damaging and are themselves a violation of the FCRA.

Your report shows a late payment — 30, 60, or 90 days — for a month when you actually paid on time or paid before the end of the grace period.

Payment data is reported by furnishers in monthly batches. Timing mismatches, system errors, and misapplied payments can all result in a payment being flagged as late in the furnisher's records even when you paid on time.

A single 30-day late payment can reduce a credit score by 60–90 points depending on the rest of the profile. An inaccurate late payment is both financially damaging and completely correctable with proper documentation.

Accounts opened in your name that you did not open, or inquiries from lenders you never contacted — both signs that someone has obtained and used your personal information.

Identity theft remains one of the most common sources of credit report errors. Stolen SSNs, data breaches, mail theft, and social engineering attacks give fraudsters enough information to apply for credit in your name.

Fraudulent accounts and the resulting delinquencies can be devastating to credit scores. They also represent ongoing financial and legal risk beyond credit reporting — unpaid fraudulent debts can lead to collection calls, lawsuits, and wage garnishment.