What form is used to request a federal employer identification number (EIN)?

The form used to request a federal employer identification number (EIN) is the SS-4 form. This form is specifically designed for individuals or businesses seeking to obtain an EIN from the Internal Revenue Service (IRS). Completing the SS-4 allows applicants to provide necessary information about their business structure, ownership, and other relevant details that the IRS requires to issue the EIN.

The other forms listed serve different purposes and are not used for requesting an EIN. The W-2 is used by employers to report the wages and taxes withheld for employees, the 1040 is an individual income tax return form, and the 1099 is used to report income received by individuals not classified as employees, such as independent contractors. Each of these forms plays a distinct role in tax reporting but none pertain to the application for an EIN.