A CP 575 letter is an official notice from the IRS confirming the issuance of an Employer Identification Number (EIN) to a business. This letter is sent shortly after the IRS processes Form SS-4, which is the application for an EIN. The CP 575 contains the legal name of the business, the assigned EIN, and the date it became effective.
Businesses often need this letter to open a business bank account, apply for licenses, or provide documentation during tax filing. Although the CP 575 itself is not mandatory to operate a business, many institutions request it as formal verification of the company’s EIN status.
If a business loses the CP 575 letter, it cannot be reissued. However, a business owner can request an EIN verification letter (known as a 147c letter) by contacting the IRS. The 147c serves the same purpose and is widely accepted as a substitute for the CP 575.
Maintaining a copy of the CP 575 letter in business records is recommended, especially for administrative and financial tasks that require IRS verification.
