Preparers must apply to obtain an Electronic Filing Identification Number (EFIN) and become an Authorized e-file Provider. This application can be completed online through the IRS E-file for Tax Professionals webpage.
If you need assistance, call the IRS e-help Desk number for electronic filing issues: 1-866-255-0654 (toll free), (if outside of the 50 U.S. states or U.S. territories, call the international phone number: 1-512-416-7750).
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the webpage or document at the time it is accessed.