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Official form guide
IRS Form 14039 is the Identity Theft Affidavit used to report suspected tax‑return identity theft to the Internal Revenue Service. File it when you believe someone has used your personal information to file a fraudulent return.
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IRS Form 14039 is the Identity Theft Affidavit used to report suspected tax‑return identity theft to the Internal Revenue Service. File it when you believe someone has used your personal information to file a fraudulent return.
Plain English
If you think a thief pretended to be you on a tax return, you fill out this short paper to tell the IRS. It lets the agency know you’re a victim and starts the process to protect your tax account.
Submission Date
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Lost or stolen SSN card
Needed to replace ID card
✓ Verify before ordering
Incorrect filing by mistake
Amended return
✓ Avoid duplicate identity‑theft claim
Business identity theft
Business taxpayer ID theft
✓ Check before using individual form
The IRS does not set a hard deadline for filing Form 14039, but filing promptly after discovery reduces processing time and prevents further fraudulent filings. If you receive an IRS notice, respond within the timeframe stated in that notice.
Checklist
Taxpayer name and SSN
Government‑issued ID · Social Security card, driver’s license
Notice of identity theft (CP01A)
IRS correspondence · Letter from IRS
Copy of fraudulent return
IRS transcript or copy of mailed return · Tax return copy
Proof of address
Utility bill or lease · Recent statement
Field map
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
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Fillable formOpen in Editor->Form 14039 is active for the 2024 tax year. The IRS updates the form annually; verify the edition date before filing.
Quick Facts
Downloads
Form vs. notice – Some think the form replaces the CP01A notice; it does not.
Business vs. individual theft – Business ID theft uses Form 14157, not 14039.
Electronic filing – Users assume e‑file is possible; it isn’t.
Signature requirement – Unsigned forms are returned without processing.
Mailing address – The address changes periodically; always verify the latest.
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