IRS Form 4506-F fax number (fraudulent return copy)

Where to fax Form 4506-F, Identity Theft Victim's Request for Copy of Fraudulent Tax Return, to the IRS.

Verified October 22, 2026Checked against Form 4506-F (Rev. 8-2021), Identity Theft Victim's Request for Copy of Fraudulent Tax Return, Submitting by FAX.

IRS Form 4506-F fax number (fraudulent return copy): which number to use
Who uses it	Office	Fax
Identity theft victims requesting a copy of a return filed with their information	IRS identity theft fraudulent return requests (toll-free)	855-807-5720

Before you fax

The form says to choose one method, mail or fax, not both.
Include a cover sheet marked "Confidential".

Last verified October 22, 2026

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