CP 575 Notice: What It Is and What to Do If You Lost It

The CP 575 is the IRS notice tied to your employer identification number (EIN). The original version, the CP575A-J series titled "Notice of New Employer Identification Number," is what the IRS issues when it assigns an EIN, and the IRS says that original "cannot be duplicated or recreated." Since then the IRS has added a digital CP575, an EIN verification notice that eligible users download from Business Tax Account and that the IRS says can substitute for both the original notice and Letter 147C.

This page covers the federal IRS notice only, verified against irs.gov on October 25, 2026. It does not cover state tax registration letters.

What the CP 575 notice is

The IRS uses "CP575" for two related documents, and most confusion about the notice comes from mixing them up.

The original CP575A-J notice series, "Notice of New Employer Identification Number," is the notice the IRS issues when it assigns your EIN. The IRS's own advice for a lost EIN starts there: "Look for it on the notice we issued when you applied for an EIN." The IRS refers to these originals together as the CP575A-J series; the pages we checked do not explain what each letter in that range stands for.

The digital CP575, "Employer Identification Number Verification Notice," is newer. The IRS describes it this way:

"CP575 is a digital notice that confirms your Employer Identification Number. It is available only through Business Tax Account and can be used as a substitute for the original CP575A-J notice series and Letter 147C, EIN Previously Assigned." (IRS, Understanding your CP575 notice)

If you applied online, the IRS also tells you to "print your EIN confirmation letter for your records" at the end of the application. Keep whatever the IRS gave you at that point with your formation records.

What to do with your CP 575

The IRS page for the CP575 gives two instructions and one suggestion:

• Keep this notice in your permanent records.
• Use your EIN on all items you send to the IRS and the Social Security Administration in connection with your business activities.
• You may want to make several copies of the notice, because it can be used when EIN verification is requested for business purposes.

The IRS says you may need to confirm your EIN "when you open a bank account for your entity or obtain other business services." That is the moment most people go looking for the notice.

If the details on file need to change

The IRS points to Form 8822-B, Change of Address or Responsible Party, if you need to change your mailing or location address or the responsible party on file for your EIN. It says changes to the responsible party "must be reported to the IRS within 60 days." For a name change, the IRS directs you to its Business Name Change page. A name or address change does not call for a new EIN; our EIN guide lists the changes that do.

Can you get a copy of the original CP 575?

No. The IRS answers this directly on its CP575 page:

"Can I request a copy of my original CP575A-J notice? No. The original CP575A-J series, Notice of New Employer Identification Number, cannot be duplicated or recreated."

That answer is about the original paper notice only. It does not mean you are stuck without proof of your EIN.

If you lost your CP 575

The IRS lists three ways to confirm an EIN, and each works without the original notice.

1. Download the digital CP575 in Business Tax Account

The IRS says eligible users "can now download your employer identification number (EIN) verification notice from your account," under Tax Records. It answers the obvious next question too:

"Is the digital CP575 the equivalent of Letter 147C, EIN Previously Assigned? Yes. The digital CP575 is accepted by banks and other institutions as written confirmation of an entity's EIN."

Business Tax Account is not open to everyone yet. The IRS says it "isn't yet available for limited liability companies (LLCs) that file as sole proprietors with Schedule C or Schedule F (Form 1040)." Corporations and partnerships get full access through a Designated Official, such as an officer of the corporation who meets the IRS requirements. Our Letter 147C guide lists the eligibility rules by business type.

2. Request Letter 147C by phone

Call the IRS Business and Specialty Tax Line at 800-829-4933, Monday to Friday, 7 a.m. to 7 p.m. local time (Alaska and Hawaii follow Pacific time), and request Letter 147C, EIN Previously Assigned. The IRS says it will "verify your identity and provide the number over the phone if you're authorized to receive it."

3. Order an entity transcript

An entity transcript "verifies information in IRS records such as employer identification number (EIN)." The IRS says eligible business owners can get it through Business Tax Account or the IRS business line, and it offers business transcripts at no cost.

If you got a CP 575 you did not expect

If an EIN notice arrives for a business you never set up, the IRS EIN page has a section for people who "received an EIN you didn't request or believe someone stole your EIN." Our guide to tax identity theft covers the broader steps for protecting your tax records.

If you don't know the EIN at all

If the notice is gone and you don't remember the number, the IRS suggests checking past business tax returns, the bank that has your business account and agencies that issued your state or local licenses before you call. Our EIN lookup tool shows where the number is printed for your situation.

General information, not tax or legal advice

This page describes IRS notices and procedures as published on irs.gov and verified on October 25, 2026. Business Tax Account eligibility can change, so check the linked IRS pages before relying on them. For advice on your own situation, talk to a CPA, enrolled agent or attorney.

Frequently Asked Questions

What is a CP 575 notice?

The original CP575A-J notice, Notice of New Employer Identification Number, is what the IRS issues when it assigns an EIN. The IRS now also offers a digital CP575, Employer Identification Number Verification Notice, in Business Tax Account, which confirms an existing EIN.

Can the IRS send me a copy of my CP 575?

Not of the original. The IRS says the original CP575A-J series cannot be duplicated or recreated. Eligible Business Tax Account users can download a digital CP575 instead, or you can call 800-829-4933 to request Letter 147C.

Is the digital CP575 the same as a 147C letter?

The IRS says the digital CP575 is the equivalent of Letter 147C, EIN Previously Assigned, and that banks and other institutions accept it as written confirmation of an entity's EIN.

Where do I download the CP575 in Business Tax Account?

The IRS says to sign in to Business Tax Account and get the notice under Tax Records. LLCs that file as sole proprietors on Schedule C or Schedule F cannot use Business Tax Account yet.

What should I do with my CP 575 notice?

The IRS says to keep it in your permanent records, use your EIN on everything you send to the IRS and the Social Security Administration for the business, and make several copies, since it can be used when EIN verification is requested.