IRS Form 14039 – Fillable Identity Theft Affidavit PDF

IRS Form 14039, also known as the Identity Theft Affidavit, is the official document you use to report tax‑related identity theft to the Internal Revenue Service. Whether your Social Security number or ITIN has been misused for a fraudulent return, employment, or any other purpose, this form lets you alert the IRS quickly and securely.

Formize.com hosts a fully fillable PDF version of Form 14039, so you can complete the affidavit directly in your browser—no extra software required. Just click the “Fill out this form” button, wait for the Formize PDF Filler app to load, and start entering your information.

What Is IRS Form 14039?

The form is a two‑page affidavit that collects personal details, a description of the identity‑theft incident, and the tax years affected. It is required whenever the IRS notifies you of a suspected fraud or when you discover unauthorized use of your taxpayer information.

Key Sections of the Form

• Section A – Type of Situation: Choose why you are filing (self‑initiated, response to IRS notice, etc.).
• Section B – How You Are Impacted: Check the boxes that match your experience (e.g., fraudulent return filed, SSN used for employment).
• Section C – Victim Contact Information: Provide your name, SSN/ITIN, mailing address, and phone number.
• Section D – Tax Account Information: List the tax year(s) you believe were compromised.
• Section E – Penalty of Perjury & Signature: Sign under penalty of perjury to certify the information is true.
• Section F – Representative Information: Fill out only if you are filing on behalf of someone else.

How to Complete the Form Online

Follow the simple steps below to submit a completed Form 14039 using Formize’s fillable PDF:

Common Mistakes to Avoid

• Leaving any required field blank – the PDF validator will block submission.
• Using an outdated version of the form. Always download the latest PDF (Rev. 2‑2026) from the IRS.
• Forgetting to sign the affidavit. An unsigned form will be returned.
• Submitting the form to the wrong address. Follow the mailing/fax instructions on the reverse side.

Where to Submit the Completed Form

After you finish, you can either:

• Print the PDF and mail it to the address listed in the form’s instructions.
• Fax it to the number provided on the reverse side.
• Attach the PDF to a secure message in your IRS online account (if available).

Using Formize’s fillable version ensures the PDF is correctly formatted, reducing the chance of processing delays.