Form SS-4 — EIN Operation, Cincinnati
Toll-freeApply for an EIN
Internal Revenue Service
Find IRS fax numbers by form: SS-4 for an EIN, Form 2553 for an S corporation election, and tax authorization or transcript requests.
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Form SS-4 — EIN International Operation, Cincinnati
Toll-freeApply for an EIN
Form SS-4 — EIN International Operation, Cincinnati
Apply for an EIN
Form 2553 — IRS Center, Kansas City
Toll-freeElect S corporation status
Form 2553 — IRS Center, Ogden
Toll-freeElect S corporation status
Form 2848 — CAF unit, Memphis
Toll-freeAuthorize a representative
Form 2848 — CAF unit, Ogden
Toll-freeAuthorize a representative
Form 2848 — International CAF Team, Philadelphia
Toll-freeAuthorize a representative
Form 2848 — International CAF Team, Philadelphia
Authorize a representative
Form 8821 — CAF unit, Memphis
Toll-freeAllow access to tax information
Form 8821 — CAF unit, Ogden
Toll-freeAllow access to tax information
Form 8821 — International CAF Team, Philadelphia
Toll-freeAllow access to tax information
Form 8821 — International CAF Team, Philadelphia
Allow access to tax information
Form 8655 — Reporting Agents File (RAF) Team, Ogden
Toll-freeAuthorize a reporting agent
Form 8023 — Office of Tax Shelter Analysis (OTSA)
Toll-freeMake a corporate stock-purchase election
Form 8806 — IRS Form 8806 intake
Toll-freeReport a change in corporate control
Form 8918 — Office of Tax Shelter Analysis (OTSA)
Toll-freeDisclose a reportable transaction as an advisor
Form 4506-T — RAIVS Team, Austin
Toll-freeRequest a tax transcript
Form 4506-T — RAIVS Team, Ogden
Toll-freeRequest a tax transcript
Form 4506-T — RAIVS Team, Kansas City
Toll-freeRequest a tax transcript
Form 4506-T — RAIVS Team, Ogden
Toll-freeRequest a tax transcript
Form 4506-T — RAIVS Team, Kansas City
Toll-freeRequest a tax transcript
Form 5472 — PIN Unit, Ogden
Toll-freeSubmit Form 5472 with a pro forma Form 1120
Form 8802 — US Residency Certification — domestic
Toll-freeApply for US residency certification (Form 6166)
Form 8802 — US Residency Certification — international
Apply for US residency certification (Form 6166)
Form 15397 — Technical Services — Extension of Time Coordinator
Toll-freeRequest more time to furnish recipient statements
Form 15397 — Technical Services — Extension of Time Coordinator
Request more time to furnish recipient statements
Form 3911 — Andover Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Atlanta Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Austin Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Brookhaven Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Fresno Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Kansas City Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Memphis Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Philadelphia Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Ogden Business Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Form 3911 — Cincinnati Business Refund Inquiry Unit
Toll-freeTrace a missing or lost issued refund
Which Internal Revenue Service fax number should I use?
Start with the IRS fax number finder. The form, business location, sender location or state can change the destination. A number for one form is not a general IRS fax number. Instructions on a notice or from your assigned IRS employee take precedence for that case.
What to include in your fax to Internal Revenue Service
Use Form SS-4 for an EIN application, Form 2553 for an S corporation election, Form 2848 for power of attorney, or Form 8821 for tax information authorization. Each has its own eligibility and routing rules. Include only the attachments required by that form. A notice response should follow the instructions and fax number on the notice.
Check the destination and prepare your cover page
Identify the form, intended IRS unit, your callback and return fax numbers, and page count. Follow the current form instructions for signatures and identifying information. Do not put unnecessary tax information on the cover page.
Open the official source above and check the current instructions. A reviewed source confirms a published number, not live availability. Toll-free numbers can still incur sending-service or international charges.
Confirm delivery and follow up with Internal Revenue Service
Keep the transmission result and a copy of the documents. Confirm with the receiving department that the packet is complete and can be processed; a delivery receipt does not establish acceptance or a decision. These are fax destinations, not voice support lines. Check with Internal Revenue Service before sending a duplicate.
How to fax Internal Revenue Service without a fax machine
Prepare a legible PDF, confirm the department and number, and review all pages before authorizing the fax. With DearFax, you can send online or prepare a workflow through ChatGPT, Codex and MCP. Save the transmission result with your records.
Frequently asked questions
Internal Revenue Service fax questions
Start with the IRS fax number finder. The form, business location, sender location or state can change the destination. A number for one form is not a general IRS fax number. Instructions on a notice or from your assigned IRS employee take precedence for that case.
No. A fax delivery result reports transmission, not acceptance, processing or a decision by the IRS.
Use the SS-4 finder. The principal business or legal residence determines the route, and international applications also depend on where you send from.
The 147C workflow starts by contacting the IRS and completing its identity and authority checks. If the IRS offers fax delivery, provide a receiving number. Do not send a 147C request to an SS-4 or tax-filing fax simply because it belongs to the IRS.
Use Form SS-4 for an EIN application, Form 2553 for an S corporation election, Form 2848 for power of attorney, or Form 8821 for tax information authorization. Each has its own eligibility and routing rules. Include only the attachments required by that form. A notice response should follow the instructions and fax number on the notice.
Identify the form, intended IRS unit, your callback and return fax numbers, and page count. Follow the current form instructions for signatures and identifying information. Do not put unnecessary tax information on the cover page.
Prepare your documents as a legible PDF and confirm the recipient’s submission requirements. You can use DearFax in your browser or prepare the fax with ChatGPT or Codex through MCP. Review the number and pages before authorizing the send, then keep the transmission result. Delivery does not confirm that the recipient accepted or processed your request.