Form SS-4, Application for Employer Identification Number

Form SS-4 is used by sole proprietors, corporations, partnerships, estates, trusts, and other entities to apply for an employer identification number (EIN), a nine-digit number assigned for tax filing and reporting purposes.

Publication 1635, Understanding Your EIN

Publication 1635, Understanding Your EIN, provides general information on Employer Identification Numbers (EINs).

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

Form SS-4 (sp), Application for Employer Identification Number (EIN) (Spanish Version), is used by sole proprietors, corporations, partnerships, estates, trusts, and other entities to apply for an employer identification number (EIN), a nine-digit number assigned for tax filing and reporting purposes.

Instructions for Form SS-4 (sp), Application for Employer Identification Number (Spanish Version)

Form SS-4 (sp), Application for Employer Identification Number (EIN) (Spanish Version), is used by sole proprietors, corporations, partnerships, estates, trusts, and other entities to apply for an employer identification number (EIN), a nine-digit number assigned for tax filing and reporting purposes.

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

Instructions for Form SS-4, Application for Employer Identification Number, which is used by sole proprietors, corporations, partnerships, estates, trusts, and other entities to apply for an employer identification number (EIN), a nine-digit number assigned for tax filing and reporting purposes.