An EIN, or Employer Identification Number, is a unique nine-digit number assigned by the IRS to businesses for tax purposes.
An Employer Identification Number (EIN) is a unique nine-digit number the Internal Revenue Service (IRS) assigns to businesses and other entities in the United States for tax purposes. It's also known as a Federal Tax Identification Number. The EIN is used to identify a business entity and is required when filing tax returns, opening a bank account, hiring employees, and other business-related activities.