Applying Online: Step-by-Step. The IRS online EIN application tool is the fastest way for eligible entities to get their number. It’s available Monday through Friday, 7 a.m. to 10 p.m. Eastern Time., If your business is in the United States (U.S.) (or in a U.S. territory), you can apply for an EIN online, by mail, or fax. International applicants can get an EIN by phone, mail, or fax, but not online., Ways to apply for an EIN. If your principal place of business is in the U.S., you can get an EIN in these ways: Apply online. Get an EIN now, free, direct from the IRS. Fax Form SS-4, Application for Employer Identification Number to 855-641-6935. If you apply by fax and provide a fax number, IRS will fax a cover sheet with the EIN back to you , An official website of the United States Government. Stay Exempt . Search Main Site Search. Search. Menu Main Site Search. Search. Main navigation. Home Apply for an EIN Online presentation text PDF . Page Last Reviewed or Updated: 11-Sep-2024 Stay Exempt footer menu 1. Related Info ., Apply for your EIN Online with EIN Filing Assist and receive your EIN today by email. Avoid the struggle of navigating federal forms systems and complicated application forms. Alternatively you can also obtain your EIN Online from the IRS website www.irs.gov., Our online assistant is currently unavailable. We apologize for the inconvenience. Please try again at a later time. You may have accessed the Online EIN Assistant outside the hours of operation. The hours of operation are posted here..