Do not want to manage fax delivery yourself? GatewayBase prepares and sends your EIN application packet.
International applicants can apply for an EIN by sending Form SS-4 to the IRS by fax or mail. The correct fax number can change, so always use the current IRS page before sending.
For foreign LLC owners without an SSN or ITIN, fax is often the practical path because the IRS online EIN tool usually expects a responsible party with a US tax ID.
This article is general education, not tax advice. GatewayBase provides document preparation and filing workflow software. We are not a law firm, CPA firm, or tax advisor.
Where to find the current fax number
Use the IRS page for where to file Form SS-4. Do not rely on an old blog post or saved PDF because fax numbers can change.
If you use GatewayBase, the product handles the fax workflow for supported EIN applications.
What to check before sending
- The LLC legal name matches formation records.
- The responsible party is correct.
- Line 7b is completed for the foreign-owner path if there is no SSN or ITIN.
- The form is signed.
- You use the current IRS fax number.
- You keep fax delivery proof.
How long fax can take
Most EIN fax applications are processed within 14 days. Timing can still vary, and the IRS can take longer during busy periods or if the form has errors.
How GatewayBase helps
GatewayBase prepares the SS-4 packet, supports foreign owners without an SSN or ITIN, sends the fax, and saves the EIN confirmation in your account when received. Start at EIN application.
FAQ
What is the EIN fax number for international applicants?
Use the current IRS Form SS-4 filing page. Fax numbers can change, so do not rely on old copied numbers.
Do I need to sign Form SS-4?
Yes. An unsigned Form SS-4 can be rejected.
Is fax faster than mail?
Usually yes. Most fax applications are processed within 14 days.
Can GatewayBase send the fax for me?
Yes, GatewayBase supports the fax workflow for its EIN application service.