e-file for Large Business and International (LB&I) refers to the electronic filing of tax returns by corporations. This system, known as Modernized e-File (MeF), allows corporations to submit their income tax return data to the IRS electronically via the Internet, rather than using paper forms. The MeF system is web-based and utilizes the Extensible Markup Language (XML) format, which is a standardized method for identifying, storing, and transmitting data.
The IRS mandates certain corporations to e-file their returns. Specifically, corporations that file Forms 1120, 1120S, or 1120-F for Tax Years 2019, 2020, and 2021 are generally required to file electronically, with few exceptions. The e-file system is accessible to corporations that either prepare and transmit their own returns or use a tax professional for these tasks.
Sources:
Publication 4163 (12/2023)
Publication 4164 (10/2023)
Rev. Proc. 2007-40
Rev. Proc. 2022-32
IRM Part 3. Submission Processing. Chapter 42. Electronic Tax Administration. Section 4. IRS e-file for Business Tax Returns
IRM Part 4. Examining Process. Chapter 46. LB&I Examination Process. Section 1. General Information and Definitions
