Form SS-4, Application for Employer Identification Number (EIN)
Use this form to apply for an employer identification number (EIN). An EIN is a nine-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.
Other Items You May Find Useful:
Comment on Form SS-4
Use the Comment on Tax Forms and Publications web form to provide feedback on the content of this product. Although we cannot respond individually to each comment, we do appreciate your feedback and will consider all comments submitted.
CAUTION: We cannot respond to tax-related questions submitted using this page. Instead, please visit Tax Law Questions or call our toll-free number at 1-800-829-1040 (Individuals) or 1-800-829-4933 (Business).