Fax Form 14039 — Identity Theft Affidavit

Form 14039 is faxed to 855-807-5720 — but only when you are not responding to an IRS notice. If you received a notice, use the fax number or address printed on that notice instead.

The business version, Form 14039-B, goes to the same number. Either way you get an emailed transmission report the moment the fax completes.

Fax Form 14039 now — $2.49

Where this form faxes

ScenarioIRS fax number
Not responding to a notice (14039 & 14039-B)855-807-5720

IRS fax numbers change without notice. We re-verify our routing table against the current IRS form instructions, and the exact number your document was sent to is printed on your transmission report.

Numbers last verified against IRS sources: 2026-07-19 · Official IRS source

Deadline

File as soon as you suspect tax-related identity theft — a rejected e-file is the usual trigger.

Frequently asked questions

855-807-5720, when you're filing proactively rather than responding to an IRS notice. If you have a notice, respond to the contact point printed on it.

Yes — the business identity-theft affidavit uses the same 855-807-5720 fax line.

The IRS acknowledges the affidavit, flags your account, and investigation typically takes up to 120–180 days. Your fax report timestamps the start of that clock.

Ready to fax Form 14039?

$2.49 flat up to 25 pages · correct IRS number resolved automatically · transmission report to your email.

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