What is a Tax ID Number?
About EINs: An Employer Identification Number (EIN), also known as a Federal Tax Identification Number, is a nine-digit number that the IRS assigns to business entities. The IRS uses this number to identify taxpayers that are required to file various business tax returns. EINs are used by employers, sole proprietors, corporations, partnerships, non-profit organizations, trusts and estates, government entities, certain individuals and other business entities.