Fax numbers
- Faxing from inside the United States 877-824-9110 Fax this number Toll-free
- Faxing from inside or outside the United States 304-707-9792 Fax this number Not toll-free
How to fax it
- Pay the user fee on Pay.gov and write the confirmation number on page 1 of Form 8802.
- Make a cover page that says how many pages you’re sending, and put it first.
- Add all the required attachments.
- Send it from dimefax.com/send: up to 10 Forms 8802 and 100 pages in one fax.
Tips
- File at least 45 days before you need the certificate.
- The user fee changed on October 1, 2026; check the current amount on the IRS’s Form 8802 page.
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.