What is the IRS identity theft fax number?

855-807-5720 for Form 14039, unless you’re replying to an IRS notice or letter that gives a different fax number.

Can I fax Form 15227 for an IP PIN?

Yes, to the same number, 855-807-5720, with a cover sheet marked “Confidential”. Online at IRS.gov/ippin is faster if you can verify your identity there.

Is it safe to fax an identity theft affidavit?

Fax travels over the phone network. Dimefax encrypts every fax in transit and at rest. In the Dimefax iPhone app you can also choose Private: the fax carrier keeps no copy, and ours is locked so only your devices can open it.

Form 14039 fax number: report tax identity theft by fax

Fax numbers

Everyone not replying to a specific IRS notice or letter 855-807-5720 Fax this number Replying to a notice? Use the fax number printed on it; if it has none, follow its mailing instructions.

Other forms that use the same number

The IRS lists 855-807-5720 on three more identity-theft forms: Form 14039-B (business identity theft, if you didn’t get a notice about it), Form 15227 (applying for an Identity Protection PIN; the IRS then calls you to verify your identity) and Form 4506-F (asking for a copy of a fraudulent return filed with your number). Each asks for a cover sheet marked “Confidential”.

How to fax it

Fill in and sign Form 14039. Sections A to E are required; F if you’re filing for someone else.
Make a cover page marked “Confidential” and put it first in your PDF.
Add clear copies of any supporting documents. Don’t send an original tax return to this number.
Send it from dimefax.com/send to 855-807-5720, or to the number on your IRS notice.
Keep the delivered confirmation and don’t file again for the same incident.

Tips

Choose one way to submit: online, mail or fax. The form says not all three.
On November 6, 2026 the IRS said it was working on Forms 14039 received in September 2025. Expect a long wait.
If your Social Security number was used to file and you can’t e-file, you can attach Form 14039 to your paper return instead.

Dimefax costs 10¢ a page and you’re only charged if the fax goes through. On the web, page credits come in packs of 50 for $4.99, 100 for $9.99 or 200 for $19.99; the Dimefax iPhone app also sells 10 for $0.99. Credits you don’t use stay in your account and last as long as you fax once a year.

Where these numbers come from

Dimefax isn’t part of, or endorsed by, the IRS. We copied these numbers from irs.gov on November 11, 2026. Agencies change their numbers: if your letter, notice or form gives a different one, use that.

IRS Form 14039 fax number (identity theft affidavit)