One of the first items that you will need to apply for when you open a business is the EIN number.

An EIN is an Employer Identification Number given to companies by the IRS for identification and tax purposes.

An EIN number can be obtained by applying online, by phone, by mail or by fax to the IRS.

If you lose your EIN after you have been give one, there are a few ways to figure out what it is.