Business
An EIN confirmation letter (IRS Notice CP575) is the official IRS notice that assigns or confirms a business's nine-digit Employer Identification Number. It prints the entity's legal name, responsible party, mailing address, notice date, and the EIN itself. Banks, payroll providers, and lenders accept it as proof the EIN belongs to your business.
Written & maintained by the Granite team · Last updated September 2026
Overview
The IRS issues Notice CP575 after it assigns an EIN to a business, LLC, corporation, trust, or estate. The original mailed series (CP575 A through J) went out once, right after a Form SS-4 application, and the IRS cannot reprint it. Since 2026 the IRS also offers a digital CP575 that eligible Business Tax Account users can download at any time. The IRS accepts the digital version as a substitute for both the original notice and Letter 147C.
The letter is short: your entity name and responsible party as the IRS has them on file, the mailing address, the notice date, and one headline line reading "Your Employer Identification Number (EIN) is NN-NNNNNNN". It is different from Letter 147C (the IRS's mailed EIN verification letter you request by phone) and from your state formation filing. The CP575 proves the federal tax ID; the Articles of Organization prove the entity exists.
These are the fields Granite reads and extracts automatically the moment you upload one.
How long to keep it
Keep your EIN confirmation letter permanently, for as long as the entity exists and beyond.
The IRS instructs you to keep the CP575 in your permanent records, and it states the original mailed CP575 A through J notice cannot be duplicated or recreated. If you lose it, your fallbacks are the digital CP575 in Business Tax Account, an entity transcript, or Letter 147C requested by phone. All of those take time you will not have when a bank or payroll provider is waiting.
Granite recognizes an EIN confirmation letter on upload, pulls the entity name, EIN, responsible party, address, notice date, and notice number, and files it in your Business Formation collection next to the Articles of Organization and any state registrations for the same entity. The EIN is stored as a sensitive field and encrypted at rest. When a bank asks for EIN proof, search "EIN" or the business name and the notice is one click away.
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