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IRS · EIN VERIFICATION LETTER 147C

Replace your lost EIN confirmation letter.

The IRS sends your EIN confirmation letter, the CP-575, only once, and it will not print another. If you have lost it and a bank or vendor needs proof of your EIN, the replacement is a Letter 147C. It confirms the exact same number, name, and address the IRS has on file. We request it for you and get it back by fax or mail.

same EIN confirmed · no IRS fee · accuracy verified July 2026
What a 147C is

Proof of an EIN you already have.

Letter 147C, formally titled EIN Previously Assigned, is the IRS document that verifies an employer identification number that was issued to you before. It is not a new EIN and it does not change your number. It is simply the official replacement for the CP-575, the one-time confirmation letter the IRS mails when your EIN is first assigned. Because the IRS will not reprint the CP-575, the 147C is what you request when the original is lost. Banks, lenders, payroll providers, and state agencies accept the 147C and the CP-575 interchangeably, since both prove the same thing.

BosAI I confirm the exact legal name and EIN the IRS has on file, prepare the authorization the IRS needs, and request the 147C so it comes back by fax the same day where possible. I help you file accurately; I do not give tax advice. Meet BosAI →
0 dollars
the IRS charges no fee
1 letter
the accepted CP-575 replacement
0 new EIN
your number stays the same
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What you receive

An official letter on IRS letterhead.

The 147C states your business name, EIN, and address exactly as the IRS holds them, signed and printed on IRS letterhead so third parties will accept it.

Your EIN verification letterRequested from the IRS on your behalf
  • Your EIN, confirmed. The same number the IRS assigned, printed on official letterhead as Letter 147C.
  • Your name and address on file. The legal business name and address the IRS has, so you can spot anything that needs updating.
  • Delivered by fax or mail. The IRS returns it by fax, often the same day, or by mail to the address on file, never by email.
  • A clean copy for your records. Ready to hand to a bank, lender, or agency that asks for proof of your EIN.
Who needs one

When someone asks for proof of your EIN.

You need a 147C when you have to prove your EIN but cannot find the original letter. If you still have the CP-575, you do not need one.

Request a 147C
  • You lost or never received the original CP-575 confirmation letter
  • A bank or lender needs written proof of your EIN to open an account or fund a loan
  • A payroll provider, vendor, or state agency asks for an IRS EIN letter
  • Your records show the EIN but you have no official document to back it up
You do not need one
  • You still have your original CP-575, which is equally accepted
  • You never had an EIN and need to apply, which is getting an EIN
  • Your responsible party or address changed, which is a Form 8822-B update
  • You are closing the business and its IRS account, which is an EIN closure

A 147C confirms your number; it does not fix outdated details. If your name or address has changed, we can file a Form 8822-B at the same time.

The facts

How the IRS issues it.

These points are verified against current IRS guidance. The 147C is free, comes only from the IRS, and is delivered securely rather than by email.

Letter 147C at a glanceVerified against IRS guidance
Accuracy verified · July 2026
What it is
Letter 147C, EIN Previously Assigned, verifies an existing EIN. It replaces the one-time CP-575, which the IRS will not reprint.
Cost
There is no IRS fee for a 147C letter.
How it is requested
It comes from the IRS Business and Specialty Tax Line, reached at 1-800-829-4933, on weekdays. The request is made by the owner or an authorized representative.
Delivery
The IRS returns it by fax, often during the call, or by mail to the address on file in about four to six weeks. It is never sent by email.
Authorization
For us to request it on your behalf, the IRS requires third-party authorization, such as Form 2848 or Form 8821. We prepare it with you.
Same number
A 147C never changes your EIN. It only re-confirms the number you already have.

IRS phone numbers and procedures can change. We confirm the current process before we request your letter.

How it works

From lost letter to confirmed EIN.

  1. 1
    Confirm your details

    We verify the legal name and EIN the IRS has on record so the request matches their file.

  2. 2
    Prepare authorization

    We complete the third-party authorization the IRS needs for us to request the letter for you.

  3. 3
    Request the 147C

    We contact the IRS Business and Specialty Tax Line and ask for your EIN verification letter.

  4. 4
    Deliver it to you

    We get the letter back by fax where possible, or by mail, and pass you a clean copy.

Why File.Business

The hold time is the hard part.

Requesting a 147C means reaching the IRS, passing verification, and handling the authorization correctly. We do that for you and get the letter back the fast way, by fax, whenever the IRS allows it.

We make the request

We handle the IRS contact and verification so you do not spend the morning on hold.

Authorization done right

We prepare the Form 2848 or 8821 the IRS requires so the request is not rejected.

The faster delivery

We get the letter by fax during the call where the IRS allows it, not a six-week wait.

Clear, flat pricing

You see our price up front; the IRS charges nothing for the letter itself. See pricing →

Questions and references

The 147C letter, answered.

Is a 147C a new EIN?

No. A 147C only confirms the EIN you already have; it never changes your number. If you have never had an EIN, you need to apply for one instead, which produces a brand-new number.

Why not just get another CP-575?

The IRS issues the CP-575 only once, when your EIN is first assigned, and will not reprint it. The 147C is the official replacement, and banks and agencies accept it exactly the same way.

How much does it cost and how long does it take?

The IRS charges nothing for the letter. It can come back by fax during the request, or by mail to the address on file in about four to six weeks. It is never emailed, for security.

Can you request it for me?

Yes, with your authorization. The IRS requires a third-party authorization such as Form 2848 or Form 8821 for us to request the letter on your behalf, which we prepare with you.

My address or responsible party changed. Does the 147C fix that?

No. The 147C shows the details the IRS currently has. To update a changed address or responsible party, you file a Form 8822-B, and if you are closing the business entirely, that is an EIN closure, both of which we can handle at the same time.

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