How to Get a Federal Tax ID Number

To set up a federal tax ID number (also called an Employer Identification Number, or EIN), contact your nearest Local IRS Field Office, or call the IRS Business and Specialty Tax Hotline at 800-829-4933.

The form you'll need to fill out is IRS From SS-4 (.pdf).

If your business does not have employees, the IRS recommends you label the top of the form SS-4 "For Identification Purposes Only."

Does your business even need a federal tax ID?
See: Do I Need a Federal Tax ID (EIN) Number?