Contact IRS for More Information

• Partnerships (Forms 1065, 1065-B) can find further e-file information for partnerships using the MeF platform on IRS.gov at Modernized e-File (MeF) for Partnerships or they may contact the e-help Desk at 1-866-255-0654. As of November 1, 2008, the 1065 Modernized e-File Mailbox is no longer active.
• Corporate taxpayers (Forms 1120, 1120S, 1120-F) may contact the e-help Desk at 1-866-255-0654 or they may email questions about e-file to: Large Corporate. Note: This email service is for questions related to the requirement to e-file only and should not be used for account or tax law questions.
• Tax-exempt organizations can find further e-file information on IRS.gov at e-file for Charities and Non-Profits.
• Taxpayers with account or tax law questions may call 1-800-829-4933.
• Tax practitioners with account or tax law questions may call 1-800-829-8374.
• Software developers and vendors may contact the e-help Desk at 1-866-255-0654 with questions about e-filing.