The following links provide information and technical guidance for Software Developers and Transmitters who are interested in developing software for the Modernized e-File (MeF) Form 720 for tax year (TY) 2023. Included are the Extensible Markup Language (XML) Schemas, Business Rules, Release Memorandum, and specific instructions. Developers and other authorized IRS e-file providers can find information on e-filing returns through MeF in the Publication 4163 PDF and Publication 4164 PDF. Test scenarios for Form 720 can be found on the Modernized e-File (MeF) Assurance Testing System (ATS) page. XML Schemas, Business Rules, and Release Memos - Throughout the year, multiple versions of these documents may be in use at the same time. Special attention should be paid to the Release Memo issue date and the projected start and end dates for Assurance Testing System (ATS) and Production. Tax year 2023 documents Tax Year 2023 720 MeF accepted forms and schedules PDF Tax Year 2023 720 MeF return due dates PDF Tax Year 2023 stylesheets: MeF stylesheet Tax Year 2023 known issues and solutions XLSX - Revised 7/1/2024 Release memo Schema version ATS date Production date Business rules Comments 02/08/2024 Q4v3.1 Start: 03/03/2024 End: TBD Start: 03/17/2024 End: TBD Q4v3.1 04/20/2023 Q4v3.0 Q3v3.0 Q2v3.0 Start: 6/4/2023 End: TBD Start: 06/18/2023 End: TBD Q4v3.0 Q3v3.0 Q2v3.0 Business Rules Change Page dated 07/20/2023 Business Rules Change Page dated 11/13/2023 02/09/2023 Q4v2.2 Q3v2.2 Q2v2.2 Q1v2.2 Start: 3/5/2023 End: 6/3/2023 Start: 03/19/2023 End: 6/17/2023 Q4v2.2 Q3v2.2 Q2v2.2 Q1v2.2 Business Rules Change Page for Version Q1v2.2 Only dated 07/20/2023 Business Rules Change Page for Version Q1v2.2 Only dated 11/13/2023 01/06/2023 Q4v2.1 Q3v2.1 Q2v2.1 Q1v2.1 Start: 12/18/2022 End: 6/3/2023 Start: 01/12/2023 End: 6/17/2023 Q4v2.1 Q3v2.1 Q2v2.1 Q1v2.1 Schema Updates dated 12/23/2022 01/09/2023 Q4v2.0 Q3v2.0 Q2v2.0 Q1v2.0 Start: 12/11/2022 End: 6/3/2023 Start: 01/12/2023 End: 6/17/2023 Q4v2.0 Q3v2.0 Q2v2.0 Q1v2.0 Form 9465 Version Date available ATS date Production date CUv26.0 11/13/2023 Start: 12/17/2023 End: TBD Start: 01/29/2024 End: TBD CUv27.0 06/06/2024 Not valid in ATS Not valid in production MeF XML Schemas and Business Rules for Excise Tax Form 720
