Someone else's accounts on your credit report (mixed file)
Sometimes the bureaus mix up people with similar names or Social Security numbers.
Signs of a mixed file
- Names, nicknames or addresses you never used.
- Accounts you don't recognize, often belonging to a relative with a similar name (Jr./Sr.).
- Inquiries from lenders you never applied with.
Mixed file or identity theft?
If the accounts look like a real person's normal history (years of payments), it's often a mix-up. If accounts were opened recently and you didn't apply, it may be identity theft: report it at IdentityTheft.gov and read our identity theft guide.
How to dispute it
Dispute with each bureau that shows the wrong information. Ask them to remove the names, addresses and accounts that aren't yours, and include a copy of your ID and a recent bill so they can match you correctly. Mixed files can hurt loan and apartment applications, so fix them early.
Write the letters
The free letter builder handles personal information and "not my account" disputes.
Questions
Why did this happen?
Bureaus match records using names, addresses, birth dates and Social Security numbers. Similar details can get mixed.
Will removing an old address hurt me?
No. Removing information that isn't yours doesn't hurt your score.
General information, not legal advice. Sources: CFPB, FTC. Checked November 2026.