Tax Helpers / Tax/Law Glossary / Federal Employer Identification Number (EIN)

Federal Employer Identification Number (EIN)

EINs are used to identify the tax accounts of businesses. You need to get an EIN if you have employees or operate your business as a partnership or corporation. An EIN is also needed if you have a Keogh retirement plan or file certain tax returns. Form SS-4, An Application for Employers Identification Number, is used to request an EIN.