# Fax Form 14039 (identity theft affidavit) to the IRS

Fax Form 14039 to the IRS toll-free at 855-807-5720, with a cover sheet marked "Confidential". If you're answering an IRS notice or letter that gives a fax number, use that number instead.

## Fax numbers

| Who | Fax number |
| --- | --- |
| Identity Theft Affidavits (Form 14039), unless your IRS letter gives another number | 855-807-5720 |

## Before you fax

- The IRS prefers Form 14039 online, at IRS.gov/dmaf/form/f14039, though attachments can't be added there.
- Choose one way to send it, online, mail or fax, not several, and don't send another Form 14039 for an incident you already reported.
- Always include a cover sheet marked "Confidential".
- If you can't e-file because someone misused your SSN or ITIN, attach Form 14039 to your paper return and send both where you normally file, not to this number.
- Never fax an original tax return to this number.

## Steps

1. Fill in and sign Form 14039; add copies of anything that supports it.
2. Turn on the cover page and write "Confidential" in its subject.
3. Enter 855-807-5720 (or the number on your IRS letter) and add the pages.
4. Send, and keep the delivery receipt.

## Questions

**Should I fax or file Form 14039 online?**

The IRS calls online its preferred method. Fax or mail it if you need to include attachments, and use only one method.

**What if my IRS letter has a fax number?**

Send the form there, with a copy of the letter if you can. If the letter has no fax number, follow its mailing instructions.

**Can I send my tax return to this number?**

No. The IRS says not to use this fax number or address for an original tax return.

**Does the number change?**

It can. We compare it with the current Form 14039 regularly; the date we last checked is at the bottom of this page.

## Sources

- [Form 14039 (Rev. February 2026), IRS.gov](https://www.irs.gov/pub/irs-pdf/f14039.pdf), checked 2026-10-12

Send this fax online: https://pagefax.net/fax-form-14039-to-irs. PageFax is an independent fax service and is not affiliated with any government agency.