Directory information, not recipient confirmation. Fax numbers can change and differ by department, location, form, or plan. Confirm this destination directly with Internal Revenue Service (IRS) – EIN Operations (EIN International Operation, Cincinnati, OH 45999) before sending sensitive documents. FaxFlow is not affiliated with this organization.
Internal Revenue Service (IRS) – EIN Operations (EIN International Operation, Cincinnati, OH 45999) fax number
(855) 215-1627
Employer Identification Number (EIN) processing – Form SS-4 submissions
Used for: Fax a completed Form SS-4 to the IRS to obtain an EIN. If the entity needs a new EIN, the IRS will assign it and fax it back to you (typically within four business days) to the same number you provided on the SS-4.
Fax destination details
- Department
- Employer Identification Number (EIN) processing – Form SS-4 submissions
- Purpose
- Fax a completed Form SS-4 to the IRS to obtain an EIN. If the entity needs a new EIN, the IRS will assign it and fax it back to you (typically within four business days) to the same number you provided on the SS-4.
- Form
- SS-4 — Form SS-4, Application for Employer Identification Number
- Address
- IRS EIN Operation, Cincinnati, OH 45999; EIN International Operation, Cincinnati, OH 45999
- Voice phone
- 1-800-829-4933 (EIN information)
- Website
- Visit organization website
Before you send
- Confirm that this exact department handles your document or request.
- Check the organization website or call its main line for the current fax number.
- Include a cover sheet and any case, member, claim, or form reference required.
- Keep the delivery confirmation with your submission records.
See the Form SS-4 instructions on the IRS website; you may also apply online.
Review official form instructionsSources and verification
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