)
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The following links provide information and technical guidance for Software Developers and Transmitters who are interested in developing software for the Modernized e-File Form 1139. You will find the Extensible Markup Language (XML) Schemas, Business Rules and other useful information separated by tax year.
Form 1139 stylesheets can be downloaded for use in displaying XML tax return data.
| Tax year | Form type |
|---|---|
| 2025 | Form 1139 |