Apply online on the IRS website if you have a valid U.S. Taxpayer Identification Number
Call the IRS Business and Specialty Tax Line at 800-829-4933
Fax Form SS-4 to the IRS
Mail Form SS-4 to the IRS
Check your business formation paperwork if the EIN was already issued
Review prior IRS notices, tax returns, or bank account documents for the EIN
Contact your bank, payroll provider, or accountant if they helped obtain it
Request a copy from the IRS if you previously received one and need confirmation