Archived Guidance for prior year FAQs F. Sources for Additional Information on Large and Mid-Size Corporations e-file # Questions Answers F1 Will the IRS provide additional information and respond to questions concerning the new e-file requirements? Yes. The IRS updates this e-file for Large and Mid-Size Corporations web page with new information as it becomes available. Check back regularly for updates. Corporate taxpayers can contact the e-help Desk at 1-866-255-0654 for assistance with inquiries. 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. Tax Practitioners or Software Developers should contact the e-Help Desk at 1-866-255-0654 for assistance with inquiries. While individual responses may not be possible due to the volume of questions submitted, IRS will post answers to frequently-asked e-file questions on this web site. F2 How will IRS communicate more information about the new e-file requirements with external audiences and stakeholder groups? Since the e-file requirements were issued, IRS officials have been holding regular meetings with representatives from key external stakeholder groups (TEI, ACT, and AICPA) to discuss e-file requirements and administrative processes. These meetings will continue. F3 If a Large Taxpayer has questions about electronic filing during the actual return preparation process, what other resources are available? The best source of information during actual return preparation will be your software vendor. Publication 4163 PDF is also a good source of information. The IRS e-Help Desk at 1-866-255-0654 can answer basic questions about electronic filing but cannot assist with return preparation.