Tax Form SS-4  
Form SS-4 - Application for Employer Identification Number

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Form SS-4

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Application for Employer Identification Number. SS-4

Use Form SS-4, Application for Employer Identification Number, to

apply for an employer identification number (EIN). An EIN is a nine-digit number (for example, 12-3456789) assigned to sole proprietors, corporations, partnerships, estates, trusts, and other entities for tax filing and reporting purposes. The information you provide on this form will establish your business tax account.

An EIN is for use in connection with your business activities only. Do not use your EIN in place of your social security number (SSN).


This form may be downloaded directly from the IRS website. To open or download, in PDF format, simply click on the link below:

Form SS-4



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