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

Use Form SS-4 to apply for an employer identification number (EIN). An EIN is a 9-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.


Current Revision


Recent Developments

None at this time.


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

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

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