An EIN (Employer Identification Number) is a federal tax ID, a unique nine-digit number represented by the format 12-3456789. This number is used by the Internal Revenue Services (IRS) and other federal agencies to identify a business for the purpose
of taxation. EINs are used by employers, sole proprietors, and entities like corporations, partnerships, non-profit associations, trusts, estates of decedents, government agencies, certain individuals, and
other business entities. Every entity that needs an EIN must have only one EIN.