Recommended by IRS

About Form 1120-F, U.S. Income Tax Return of a Foreign Corporation

Information about Form 1120-F, U.S. Income Tax Return of a Foreign Corporation, including recent updates, related forms and instructions on how to file.

Form 1120-F PDF
PDF version of Form 1120-F.
Instructions for Form 1120-F PDF
Instructions explaining how to file Form 1120-F.

Form 1120/1120-S/1120-F/1120-H e-file

Electronic filing of Form 1120/1120-S/1120-F/1120-H for corporations.
Software Development
Software Developers

2023 valid XML schemas and business rules for 1120, 1120-F and 1120-S Modernized e-File (MeF)

The 1120x TY2023 webpage provides information to software developers and/or transmitters about the release of schemas and business rules for tax year 2023.
Software Development
Software Developers

2022 valid XML schemas and business rules for 1120, 1120-F, and 1120-S Modernized e-File (MeF)

The Modernized eFile XML Schemas and Business rules page provides information to software developers and/or transmitters about the release of release memos and miscellaneous tax year 2022 information.
Software Development
Software Developers

Valid XML schemas and business rules for 1120, 1120-F, 1120-H and 1120-S Modernized e-File (MeF)

The following links provide information and technical guidance for software developers and transmitters who are interested in developing software for the Modernized e-File Forms 1120/1120S/1120-F and 7004. You will find the XML Schemas, technical documents, and late breaking news and announcements.
Software Development
Software Developers

2024 valid XML schemas and business rules for 1120, 1120-F, 1120-H and 1120-S Modernized e-File (MeF)

2024 valid XML schemas and business rules for 1120, 1120-F and 1120-S Modernized e-File (MeF)
Software Development
Software Developers

Modernized e-File (MeF) forms

Find out what tax forms can be e-filed through the MeF system.
Software Development
Software Developers

Tax Year 2022 Form 1120 Modernized e-File (MeF) Assurance Testing System (ATS) information

Tax Year 2022 ATS scenarios are provided to Software developers and transmitters before ATS testing beginning October 24th, 2022.
Software Development

Tax year 2021 Form 1120 Modernized e-File (MeF) Assurance Testing System (ATS) information

Software developers use ATS scenarios to test their new software for Corporate returns for tax year 2021
Software Development
Software Developers

Tax year 2024 Form 1120 Modernized e-File (MeF) Assurance Testing System (ATS) information

TY 2024 1120 Modernized e-File (MeF) Assurance Testing System (ATS) Information provides information to software developers and/or transmitters about the release of scenarios for tax year 2023.
Software Development
Software Developers

Tax year 2023 Form 1120 Modernized e-File (MeF) Assurance Testing System (ATS) information

The Tax Year 2023 Form 1120 Modernized e-File (MeF) Assurance Testing System (ATS) Information provides information to Software Developers and/or Transmitters about the release of scenarios for Tax Year 2023.
Software Development
Software Developers