Credit report errors are common enough that an annual review is worthwhile. The dispute process is defined and works reasonably well when used properly.

Finding the Errors
Obtain your report from each major bureau, since they hold separate records and an error may appear on one and not the others.
Read every account entry rather than only the summary. Check the balance, the limit, the opening date, the status and the payment history for each one.
Common errors include accounts that are not yours, balances that are incorrect, payments reported late that were made on time, and accounts shown as open after being closed.
Duplicate entries for the same debt occur as well, particularly when a debt has been sold or transferred between collectors.
Personal information errors such as an incorrect address matter because they can indicate mixed files with another person of a similar name.
Make a list of everything that looks wrong before starting, since disputes are handled more efficiently when organized.
Check the collections and public records sections with particular care. These entries carry the most weight in any assessment, and an error there costs considerably more than an incorrect balance on an ordinary account.
Gathering Evidence
Evidence is what resolves disputes. A statement showing the correct balance, a confirmation of payment, or a letter confirming an account was closed all carry weight.
Bank records showing a payment date are the most useful evidence for a disputed late payment. The date the payment left your account is the relevant fact.
Correspondence with the provider is useful, particularly if it confirms an arrangement or a resolution.
For accounts that are not yours, less evidence is available, and the dispute relies on the bureau verification process with the furnisher.
Keep copies of everything you send and note the date of each submission, since timelines matter in this process.
Where evidence is thin, describe the discrepancy precisely rather than generally. A specific claim is easier to investigate than a general assertion of inaccuracy.
Request records from the provider if you do not have them. Institutions are generally required to supply account information on request, and a statement obtained for this purpose is usually enough to settle a factual dispute about a date or an amount.
Filing the Dispute
Disputes can be filed with the bureau directly, usually online, by post or by phone. Written submissions create a record, which is useful if the process extends.
File with each bureau that shows the error, since they investigate independently and a correction at one does not propagate automatically.
Disputing directly with the provider that reported the information is also worthwhile and sometimes faster, particularly for a straightforward error.
State the specific entry, the specific error and the correction you are seeking. Vague disputes are more likely to be returned as verified.
Attach supporting documents rather than referring to them. Investigations proceed on what is submitted.
Keep the submission factual and brief. The process is administrative and a concise, evidenced claim is handled more efficiently than a long narrative.
Send written disputes by a method that provides proof of delivery. The investigation clock runs from receipt, and being able to demonstrate when a submission arrived matters if the response is late or never arrives.
Dispute one error at a time where several exist on the same account. Bundled disputes are easier to return as verified, and separate specific claims tend to be investigated more carefully than a single general complaint.
What Happens Next
The bureau contacts the entity that furnished the information and asks it to verify. The investigation period is defined by regulation and is typically about a month.
If the furnisher cannot verify the information, it must be corrected or removed. This is the mechanism that resolves most legitimate disputes.
You receive the outcome in writing along with an updated report if changes were made.
If the dispute is rejected and you still believe the entry is wrong, you can submit additional evidence and dispute again.
You can also add a statement to your file describing the disagreement, which future readers of the report will see.
Where a dispute involves a significant error that affects a pending application, informing the lender directly is worthwhile, since they can sometimes proceed with documentation.
Follow up if the deadline passes without a response. Investigations occasionally stall, and a polite reminder referencing the submission date and the regulatory period usually restarts the process without further escalation.
After the Correction
Obtain a fresh copy of the report to confirm the change was made correctly, since partial corrections occur.
Check the other bureaus again, since a correction at one does not guarantee the others were updated.
Keep the documentation for at least a few years. Errors occasionally reappear when data is refreshed, and having the previous resolution makes the second dispute straightforward.
Allow a reporting cycle before expecting any score change, since updates propagate on the bureaus own schedules.
If the error affected a recent application, it may be worth reapplying once the correction is confirmed.
Make the annual review a habit, since the cost of finding an error early is a short administrative task and the cost of finding it late can be a declined application.
Consider setting a reminder for the same month each year. Making the review an annual fixture rather than a response to a problem is what turns it from a stressful task into a routine administrative check.
