EIN: How to Find EIN? EIN stands for Employee Identification Number. In the United States of America, any type of business that consists of Employees must have an EIN number. Here we will discuss some important facts about EIN. After reading this article you will be able to know why EIN is also known as FEIN (Federal Tax Identification Number). Why it is used for the identification of a business entity and why do you want to protect your EIN number. Employer Identification Number in Virginia. EIN has all the critical information...