What can I do about someone changing my address for IRS without my permission?

If someone has changed your address with the IRS without your permission, you should act quickly to protect your identity. First, contact the IRS directly at their toll-free number to report the issue and verify your address on file. Additionally, consider filing Form 14039, the Identity Theft Affidavit, to alert the IRS of potential identity theft. Lastly, monitor your financial accounts and consider placing a fraud alert on your credit report to prevent further unauthorized activity.