Independent form guide. BrieflyGo is not affiliated with or endorsed by IRS, USCIS, SSA, DOL, or any U.S. government agency. Official forms are sourced from public government websites.
Official form guide
Form 14039: Identity Theft Affidavit
IRS Form 14039 is the Identity Theft Affidavit, used by victims of identity theft to assist with their tax accounts. This form has an OMB Number of 1545-2139.
Need help with Form 14039?
Open it in the AI Editor for field guidance, checks, and PDF export.
Need help? AI Editor guides you through every field of Form 14039.
Start filling →Form Overview
IRS Form 14039 - Identity Theft Affidavit
IRS Form 14039 is the Identity Theft Affidavit, used by victims of identity theft to assist with their tax accounts. This form has an OMB Number of 1545-2139.
Risk Radar
Scan points- 1Do not file this form if you have already submitted Form 14039 for the exact same incident.
- 2Filing without completing all required Sections A through E of Form 14039
- 3Submitting the form when a prior Form 14039 already exists for this incident
- 4Failing to check only ONE box in Section A detailing the identity theft scenario
- 5Not providing an explanation of how the theft impacts the tax account
Plain English
This document allows a person to officially tell the IRS that someone else fraudulently used their personal information for tax purposes. By filing Form 14039, the victim helps the IRS mark their account for future protection. It is necessary if the taxpayer suspects fraudulent activity on a federal tax return.
Submission Date
- Filing date: 2026-03-18 09:10:42
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
AI co-pilot
Fill it faster. Catch mistakes before you file.
What this form is for
- Use this form when you are a victim of identity theft and need to file an Identity Theft Affidavit with the IRS.
- Do not use Form 14039 if you have already filed a Form 14039 for the same incident.
- Check Form 2848 instead when you are acting as a representative, conservator, or parent/guardian but need to indicate your authority.
Form selector
Use this form or another form?
Reporting on behalf of another person (not dependent)
This is required if the victim listed in Section C is not you and not a direct dependent.
✓ Check Section A, Box 4.
Victim's identity was misused by a parent or guardian filing taxes
If this specific scenario occurs, do not use Form 14039 for the general affidavit; ensure it is filed correctly based on other criteria.
✓ Check Section A, Box 3.
Filing in response to an IRS Notice/Letter
You must provide the specific 'Notice' or 'Letter' number(s) on the line provided in Section A.
✓ Check Section A, Box 2.
Deadline or filing window
The form must be submitted when the victim becomes aware of the identity theft. There is no specific deadline date mentioned, but it should be filed promptly to avoid delays in IRS assistance. The instructions do not detail an extension period for filing Form 14039 itself.
Checklist
What you need before filling it out
Section A (Checkboxes)
Confirmation of situation (e.g., '1. I am submitting this Form 14039 for myself') · Section A
Victim's Taxpayer Identification Number
9-digit SSN or ITIN · Section C
Section E (Penalty of Perjury)
Signature and Date signed · Section E
Section F, Box 1 (Deceased Spouse)
No attachments are required · Section F
Submission Method Selection
Online, Mail, or FAX must be chosen; do not use all three methods simultaneously. · Section p.2 instructions
Before you submit
- 1Complete Sections A through F of Form 14039.
- 2Ensure the appropriate box(es) are checked in Section A based on your situation.
- 3Provide the correct 9-digit Taxpayer Identification Number in Section C.
- 4If submitting for someone else, check only ONE reason box in Section F and attach required documentation (if applicable).
- 5Sign and date the affidavit in Section E under penalty of perjury.
- 6Choose one submission method: Online (preferred), Mail, or FAX.
- 7If mailing, ensure you include a clear copy/image of any additional information.
How to file this form
- 1Complete Sections A through D by checking applicable boxes and filling in all required contact and tax account details for the victim.
- 2Complete Section E by signing under penalty of perjury and dating the affidavit.
- 3If filing on behalf of another, complete Section F by checking the relevant reason box and attaching supporting documentation as necessary.
- 4Submit the form using one method: Online (preferred via https://www.irs.gov/dmaf/form/f14039), FAX to 855-807-5720, or Mail it to the specified address.
Known limitations
- 1Do not use Form 14039 if a victim has already filed this form for the same incident.
- 2The form is not used if the identity misuse involves a parent or guardian filing taxes on a dependent child or relative (this situation requires specific reporting).
- 3If the person in Section C has previously submitted Form 14039 for the same incident, another submission of Form 14039 is unnecessary.
- 4The form should not be used if the identity theft issue does not fall into one of the scenarios listed in Section B (e.g., fraudulent filing on behalf of another person).
- 5If a victim does not provide required substantiation information, the IRS may not place a marker on their account for future protection.
Field map
Compact field-by-field guide
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.
Almost done reviewing the fields?
Fillable formOpen in Editor->The current edition is Form 14039 (Rev. 2-2026), dated February 2026. The source indicates that the form can be completed online at https://www.irs.gov/dmaf/form/f14039.
What changed or needs a fresh check
- Edition date — confirm the revision date reads 02/26 (or February 2026)
- OMB Number — confirm it is 1545-2139
- Online completion link — confirm it matches https://www.irs.gov/dmaf/form/f14039
- Signature — ensure the taxpayer, representative, conservator, parent, or guardian signs in Section E.
- Required Sections — verify that Sections A through F are completed.
Quick Facts
Downloads
After you file
- 1Keep a copy of the completed Form 14039.
- 2Submit the original tax return to the IRS location where it is normally filed (unless filing online).
- 3If submitting by mail or fax, provide clear and readable photocopies/images of any additional information chosen for submission.
- 4If checking Box 2 in Section A and responding to an IRS notice/letter, send the form to the FAX number provided on that notice/letter.
Sources
- SRCForm 14039 is for victims of identity theft — Instructions p.1
- SRCSections A through E of this form must be completed — Instructions p.1
- SRCSection A requires checking boxes to specify the reporting situation (Required) — Instructions p.1
- SRCThe primary purpose of Form 14039 is to report identity theft issues to the IRS so they may document them — Instructions p.2
- SRCWhen filing, choose one method: Online (preferred), Mail, or FAX — Instructions p.2
- SRCThe official mailing address for submission is Fresno, CA 93725 — Instructions p.2
- SRCLegal authority to request the information on Form 14039 is 26 U.S.C. 6001 — Instructions p.2
- SRCIf you are a potential victim and do not provide required substantiation, future protection may be difficult — Instructions p.2
Common confusion points
What if I am filing this form online but also sending it by mail?
The source states to choose only one method: Online (preferred), Mail, or FAX.
→ Confirm you are not using all three submission methods simultaneously.
Do I need to send my original tax return somewhere else if I file Form 14039 online?
Yes, the original tax return must be submitted to the IRS location where it is normally filed.
→ Check the filing instructions on the form for your standard local/regional address.
When should I use this form instead of just reporting it elsewhere?
Use Form 14039 when you are a victim of identity theft and need to report the issue to the IRS so they can document it and potentially assist with tax liability.
→ Ensure Section B describes how *you* or your dependent were impacted.
What happens if I file this form but don't include proof?
If required substantiation information is not provided, it may be difficult for the IRS to determine your correct tax liability.
→ Always attach supporting documents when possible.
If my spouse and I are both victims
how do we report that on Form 14039?
Check Box 1 under Section B (
My spouse is also a victim
).
Ensure you complete all required sections (A through E) for the reporting person(s).
Can I use this form if my dependent's identity was misused by me while filing taxes?
No, do not use Form 14039 in that specific case; it is not considered identity theft under those circumstances.
→ Check Box 3 in Section A and read the accompanying note carefully.
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- If you intentionally provide false information on Form 14039, criminal penalties may apply.
Questions about IRS Form 14039
What is IRS Form 14039 used for?
This document allows a person to officially tell the IRS that someone else fraudulently used their personal information for tax purposes. By filing Form 14039, the victim helps the IRS mark their account for future protection. It is necessary if the taxpayer suspects fraudulent activity on a federal tax return.
Who must file IRS Form 14039?
Victims of identity theft must file IRS Form 14039. The form is used by anyone who knows or suspects someone used their information to fraudulently file a federal tax return.
What information does IRS Form 14039 require?
The form collects details such as the name(s) used on the last filed tax return, the year(s) impacted by the identity theft, and an explanation of how the issue impacts the taxpayer's account. Section F gathers representative/guardian information if the filer is acting on behalf of another.
When is IRS Form 14039 due?
The form must be submitted when the victim becomes aware of the identity theft incident. If a person in Section C has previously submitted Form 14039 for the same incident, there is no need to submit another one.
Where do I file IRS Form 14039?
Submissions can occur Online via https://www.irs.gov/dmaf/form/f14039 (preferred method), by Mail, or by FAX. If submitting by FAX and checking Box 2 in Section A, use the specific FAX number provided on the form.
How do I complete IRS Form 14039?
First, complete Sections A through E of IRS Form 14039. The filer must check one box in Section A detailing the specific identity theft scenario (e.g., fraudulent tax return filing). Finally, sign and date in Section E under penalty of perjury to finalize the affidavit.
What happens if IRS Form 14039 is filed incorrectly?
If a victim does not provide required substantiation information, the IRS may not be able to place a marker on the account for future protection. Intentionally providing false information on Form 14039 subjects the filer to criminal penalties.
What if I am filing this form online but also sending it by mail?
The source states to choose only one method: Online (preferred), Mail, or FAX. Confirm you are not using all three submission methods simultaneously.
Source transparency
Copyright & Licensing - US Government Forms
BrieflyGo links to and explains official public form sources. We are not a government agency, and this page is for general form guidance, not legal advice.
Understand the agreement before you sign it.
Review risky clauses in plain English, fix the document, and keep it moving toward signature.