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The Tax Year 2023 7004 Modernized e-File (MeF) Assurance Testing System (ATS) Information page contains the Tax Year 2023 ATS Scenarios used by external customers for ATS.

Tax year 2023 Form 1041 Modernized e-File (MeF) Assurance Testing System (ATS) information

We are providing business rule change pages for tax year 2023 eXtensible Mark-up Language (XML) for the following forms in processing year 2025.

The links below provide information and technical guidance for software developers and transmitters who are interested in developing software for AIR for Tax Year 2020. Included are links to Known Issues, Form to Schema Crosswalks, XML Schemas, and Business Rules.

Information and technical guidance for software developers and transmitters who are interested in developing software for AIR for Tax Year 2017

Tax Year 2022 Form 1040 Series and Extensions Modernized (MeF) Assurance Testing System (ATS) Information

Tax Year 2018 Affordable Care Act Information Returns (AIR) Known Issues, Crosswalks, Schemas and Business Rules

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.

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.

TY 2023 Form 8849 Home page to keep SWD’s abreast of all the current Schemas and Business Rules