Need to fax business IRS tax forms? This guide covers which forms the IRS accepts by fax, verified fax numbers for Form SS-4, 2553, 2848, and more — plus a step-by-step process to send safely and get confirmation.
Frequently Asked Questions
Which business IRS tax forms can I fax?
The IRS accepts faxes for Form SS-4 (EIN application), Form 2553 (S-Corp election), Form 2848 (Power of Attorney), Form 8821 (Tax Information Authorization), Form 8655 (Reporting Agent Authorization), and Form 3115 (Accounting Method Change). Most business tax returns (Form 941, 1120) must be e-filed or mailed — they cannot be faxed.
What is the fax number for IRS Form SS-4?
For businesses in the 50 U.S. states and D.C., fax Form SS-4 to 855-641-6935. For U.S. territories (within the U.S.), use 855-215-1627. From outside the U.S., use 304-707-9471. Include your own fax number so the IRS can return your EIN within 4 business days.
Can I fax Form 2553 for S-Corp election?
Yes. Fax Form 2553 to 855-214-7520 if your business is in a western or southern state, or to 855-887-7734 for northeastern and midwestern states. Always check the current form instructions on IRS.gov to confirm the correct number for your state.
Does the IRS send a confirmation when it receives a fax?
No. The IRS does not send fax confirmation of receipt. Your fax transmission report (provided by your fax service) is your proof of submission. Save it with your tax records for at least 3–7 years.
How long does the IRS take to process faxed business forms?
Form SS-4 faxed via the Fax-TIN program is typically processed within 4 business days, and the IRS will fax your EIN back. Form 2553 and Form 2848 generally take 3–5 business days. Processing times may be longer during peak tax season (January–April).