An EIN, also called a federal identification number, is a unique business tax ID number that you can get online in just a few minutes.

Companies, like people, are usually known by their names, but people and companies both have other types of identification, often issued by government agencies in the form of identification numbers.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech ...

What is an Employee ID (EmployeeID) Number? An employee ID number is the unique 6-digit identification number given to a University of Colorado employee upon hire. It is not your social security ...