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Form SS-4, Application for Employer Identification Number (EIN)

Use this form to apply for an employer identification number (EIN). An EIN is a nine-digit number (for example, 12-3456789) assigned to employers, sole proprietors, corporations, partnerships, estates, trusts, certain individuals, and other entities for tax filing and reporting purposes.


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All Form SS-4 Revisions

Apply for an Employer Identification Number (EIN) Online

Formulario SS-4PR, Solicitud de Número de Identificación Patronal (EIN)

Publication 15 (Circular E), Employer's Tax Guide

Publication 51 (Circular A), Agricultural Employer's Tax Guide

Publication 80, Federal Tax Guide for Employers in the U.S. Virgin Islands, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands

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Comment on Form SS-4

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Page Last Reviewed or Updated: 22-Sep-2016