What is an EIN?
An Employer Identification Number (EIN) is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to identify a business entity. Often referred to as a Federal Tax Identification Number, the EIN functions much like a Social Security Number for individuals, but for businesses. It is used for a range of purposes, from tax reporting to opening business bank accounts (and credit cards!).
Read more: Guide to Understanding the Employer Identification Number (EIN)