Learn about EIN numbers, why they're essential for businesses, and how to apply for one with this comprehensive guide.

Employer Identification Number (EIN) Definition: A 9-digit number obtained by a business with paid employees from the IRS. If you're a sole proprietorship, your EIN is your social security number.

a Social Security number and an Employer Identification Number (EIN). Since you most likely already have a Social Security number, let's address the issue of EIN numbers. The EIN is a nine-digit ...