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, 1120-F, 1120-H and 1120-S. You will find the Extensible Markup Language (XML) Schemas, Business Rules and other useful information separated by tax year.
Forms 1120, 1120-F, 1120-H and 1120-S stylesheets can be downloaded for use in displaying XML tax return data.
| Tax year | Form type |
|---|---|
| 2024 | Form 1120, 1120-F, 1120-H and 1120-S |
| 2023 | Form 1120, 1120-F, and 1120-S |
| 2022 | Form 1120, 1120-F, and 1120-S |
| 2021 | Form 1120, 1120-F, and 1120-S |