Form SS-4, Application for Employer Identification Number

What is the purpose of this form?

Use Form SS-4 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.

When should this form be used?

File Form SS-4 if the applicant entity does not already have an EIN but is required to show an EIN on any return, statement,
or other document.

Form SS-4, Application for Employer Identification Number
or
File Online

OMB No. 1545-0003; Rev. January 2010

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