Apply online through the IRS EIN Assistant if you have a valid U.S. taxpayer ID and your business is in the U.S. or U.S. territories
Apply by fax using Form SS-4 sent to the IRS
Apply by mail using Form SS-4 sent to the IRS
Apply by phone if you are an international applicant
Check your IRS confirmation letter if you already received an EIN
Contact your bank, accountant, or business formation service if they helped you obtain it
Search your business records, tax filings, payroll documents, or bank account paperwork
Call the IRS Business and Specialty Tax Line at 800-829-4933 if you need help locating a previously issued EIN