EIN Confirmation: CP575, Letter 147C and Fax Responses
Compare an IRS fax response, CP575 and Letter 147C, including current digital CP575 options and what to check when a bank asks for EIN proof.
An IRS fax response, a CP575 notice and Letter 147C are not names for the same document. CP575 relates to EIN confirmation; Letter 147C verifies an EIN previously assigned. The IRS now also lists a digital CP575 option for eligible Business Tax Account users and an Entity transcript as ways to confirm an EIN. IRS EIN confirmation guidance, checked October 8, 2026.
The IRS also explains that its fax reply is a cover sheet with the EIN. It no longer provides an SS-4 notated with the assigned number. Keep that cover sheet as received and distinguish it from a CP575 notice or fax provider receipt. IRS fax application guidance.
Before requesting another document, identify what you already have and what the bank, payment provider or other recipient actually needs.
Compare the documents and records
| Item | What to establish |
|---|---|
| Fax provider’s delivery report | Whether the provider reports successful transmission; it does not assign an EIN |
| IRS fax response | Read the actual response to determine its content and outcome; the delivery channel is not its document type |
| Original CP575 series notice | EIN assignment or confirmation notice associated with the original application |
| Digital CP575 | Downloadable EIN verification notice for eligible Business Tax Account users |
| Letter 147C | IRS verification of an EIN previously assigned |
| Entity transcript | Another EIN confirmation option listed by the IRS |
Do not rename a fax provider’s receipt EIN certificate. Equally, do not promise a customer CP575 merely because a fax from the IRS has arrived. The document’s contents, entity details and source must support the description.
What if the original CP575 is missing?
First determine whether you know the EIN and only need documentary proof, or whether you have also lost the number. Those are different problems.
For proof, the IRS currently lists three options: an Entity transcript, a digital CP575 for eligible Business Tax Account users, or a request for Letter 147C through its business and specialty tax line. The IRS says the digital CP575 can substitute for the original CP575A-J notice series and Letter 147C. Read the current IRS options.
That does not establish that every foreign-owned single-member LLC or owner without a US taxpayer ID can access Business Tax Account. Check the relevant account eligibility before relying on a download. An article promising instant online access to every overseas founder would overstate the option.
Older guidance sometimes presents Letter 147C as the only possible route when the original notice is missing. Review the current IRS options instead of assuming that statement remains complete.
How to request Letter 147C
Use the contact route linked from the IRS’s current EIN confirmation page and ask for verification of the existing EIN. Be ready to establish your identity and authority for the entity. Do not submit another SS-4 merely to obtain a fresh-looking confirmation document.
If a service obtained the EIN originally, its SS-4 Third Party Designee appointment does not last indefinitely. That authority ends when the new EIN is assigned and released to it. A later verification request must satisfy the applicable authorization rules. See SS-4 third-party designee authority.
What if the EIN itself is missing?
Look for the original IRS notice, previous business tax returns, bank records and licensing records. The IRS lists these recovery steps and provides a contact path if the number still cannot be found. See Lost or forgot EIN.
If a formation provider may have applied, ask for the application copy, submission record and any original response. A provider’s dashboard being empty does not prove that no EIN was assigned. Our already-applied guide explains how to organize that check.
What should I send to a bank?
Ask the bank which documents it accepts and whether it requires a specific notice or verification format. Supply an authentic document whose legal entity details match the application. Confirm any discrepancy instead of editing the document to make it look consistent.
The IRS’s recognition of a verification document does not guarantee a particular bank’s onboarding decision. The bank may have other identification, ownership, business-location or activity requirements. An EIN establishes neither automatic account approval nor completion of every tax obligation.
Common questions
Is every IRS fax a CP575?
No. The IRS currently describes its EIN fax reply as a cover sheet containing the number, rather than an SS-4 annotated with it. Inspect the actual document to identify its content and whether it contains an assignment, a verification or a request for information.
Do I need a new EIN if I lose the letter?
Generally, no. Recover the existing number or obtain verification through the IRS’s current options. Losing evidence of an EIN is different from a business change that requires a new EIN.
Does EINPilot promise CP575 or Letter 147C?
No. The planned service delivers the actual IRS response received and checked for the applicant, together with the submission records. It does not guarantee a particular notice, provide 147C retrieval in its standard scope or create replacement IRS certificates. Explore the current product preview. Real applications, payments and fax submissions are not available.
General information, not individualized tax advice. Sources checked October 8, 2026: IRS EIN confirmation and recovery guidance and SS-4 designee instructions.