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Form 14039 · Identity Theft Affidavit

How to fax Form 14039 to the IRS.

Form 14039 tells the IRS that someone may have used your Social Security number or ITIN, for example to file a tax return in your name. The IRS prefers it online, and you can also mail or fax it. Choose one way, not all three.

See the fax number Fax Form 14039 now

Fax numbers checked against irs.gov on October 10, 2026.

The fax number

Which number to fax Form 14039 to.

Find the row that matches you and use that number. These are the numbers in the official instructions, read on October 10, 2026. Open the official page and confirm before you send.

The number on the notice
The fax number printed on the notice or letter if it shows none, follow its mailing instructions

You are responding to an IRS notice or letter (box 2 in Section A)

Toll-free
855-807-5720

Everyone else

Official source: irs.gov, Form 14039, page 2, Submitting by FAX (Form 14039, revision February 2026). Toll-free 855 numbers cost the same as any US or Canadian number on HelpMeFax.

Before you press send

What to check first.

  • Mark your cover sheet "Confidential". The IRS asks for that on every faxed Form 14039.
  • Complete Sections A to E.
  • Do not send it if you already filed a Form 14039 for the same incident.
  • Do not use this fax number to file a tax return; send the return where you normally file.
  • Make any copies you attach clear and readable.
If fax isn’t the best route

Other ways to file.

  • Online at irs.gov/dmaf/form/f14039, the IRS’s preferred method; attachments cannot be added there.
  • By mail, to the address on the form.

After you fax it

  • To protect future returns, the IRS encourages getting an Identity Protection PIN at IRS.gov/pin.

Need a cover sheet marked "Confidential"?

Our confidential fax cover sheet is a free, printable one-page PDF with no sign-up. Or add the optional HelpMeFax cover page when you send and type "Confidential" in it.

Get the cover sheet
No fax machine needed

How to fax Form 14039 with HelpMeFax.

From a phone or a computer, with no app to install. Form 14039 is 2 pages, so with a cover page it is $2.99, and there is no subscription.

  1. 1

    Complete and sign Form 14039

    Fill in the form and sign it. Save it as a PDF, or photograph every page.

  2. 2

    Find your fax number

    Use the chart on this page for your situation, and confirm it on the official IRS page linked below it.

  3. 3

    Upload and send

    Upload at helpmefax.com, enter the IRS fax number, add a cover page if you want one, and pay by card: $2.99 for this form with a cover page, no subscription.

  4. 4

    Keep the confirmation

    Save the delivery confirmation email with your copy of the form. It records when the IRS fax system accepted it.

Busy lines are retried automatically, and the delivery confirmation is emailed to you and kept in your fax history. Faxing from a phone? See faxing from an iPhone or an Android phone.

FAQ

Faxing Form 14039.

You are responding to an IRS notice or letter (box 2 in Section A): The fax number printed on the notice or letter (if it shows none, follow its mailing instructions). Everyone else: 855-807-5720. Read from irs.gov on October 10, 2026; confirm at the official page before you send.
Yes. The IRS asks you to always include a cover sheet marked "Confidential" when you fax Form 14039. HelpMeFax’s free confidential cover sheet works, or write it on your own first page.
The fax number printed on that notice or letter. If it shows no fax number, follow the mailing instructions on the letter instead. The 855-807-5720 number is for everyone else.
Yes, and the IRS prefers it, at irs.gov/dmaf/form/f14039. You cannot add attachments online; if you need to include documents, fax or mail the form instead. Use one method only.
One flat price per fax: $2.99 for 1–5 pages, $4.99 for 6–10, $8.99 for 11–25, $14.99 for 26–50, $24.99 for 51–100, then $0.15 per page. Form 14039 is 2 pages, so with a cover page it is $2.99 unless you attach more. No subscription; pay by card.
Your document is encrypted with TLS 1.2+ in transit and AES-256 at rest, and the fax is a direct call to the IRS fax line, with no email inbox in between. You get a delivery confirmation by email when the IRS fax system accepts it. Documents are stored encrypted for 365 days, then deleted automatically.
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Form 4506-T fax number
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HelpMeFax is an independent fax service, not affiliated with or endorsed by the Internal Revenue Service, and this page is not tax advice. It restates the official instructions for Form 14039; when they differ, the IRS instructions win.

Fax Form 14039 today, without a fax machine.

Upload it, enter the IRS number, and keep the delivery confirmation. $2.99 for this form with a cover page.

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