International Form SS-4 fax routing Fax to 304-707-9471 when sending from outside the United States, or 855-215-1627 when sending from within the United States, if the applicant has no legal residence, principal place of business, or principal office or agency in a state or Washington, D.C.
Outside the U.S.+1-304-707-9471

International applicant sending from abroad.

Inside the U.S.+1-855-215-1627

International case sent while physically in the U.S.

Why 855-641-6935 is usually wrong for this audience

The IRS assigns 855-641-6935 to applicants with a legal residence, principal place of business, or principal office or agency in one of the 50 states or the District of Columbia. It is the domestic routing line.

A foreign owner who formed a U.S. LLC should evaluate the applicant’s actual legal residence or principal place of business under the IRS wording. Copying the domestic number from a generic business guide can route the application incorrectly.

What to include with the fax

  1. The current official Form SS-4, completed, signed and dated.
  2. A return fax number so the IRS can fax the EIN back.
  3. The responsible party’s correct line 7a and 7b information.
  4. The entity’s exact legal name and real mailing address.

The IRS says the Fax-TIN program generally returns an EIN within four business days and is available 24 hours a day, seven days a week. Numbers may change without notice, so recheck the official instructions before sending.

The phone route may be faster

An applicant with no legal residence, principal place of business, or principal office or agency in the United States or U.S. territories may call 267-941-1099. The number is not toll-free and operates Monday through Friday, 6:00 a.m. to 11:00 p.m. Eastern time.

Have the completed SS-4 in front of you. The caller must be authorized to receive the EIN and answer questions about the form.

Mail alternative

International applicants can mail the signed Form SS-4 to:

International mailing address Internal Revenue Service
Attn: EIN International Operation
Cincinnati, OH 45999

The IRS says to expect approximately four weeks for a mailed application.

Primary source Verify the current numbers in the IRS Instructions for Form SS-4, “Apply by fax” and the IRS Form SS-4 filing page.