The tables below provide links to the Tax Year 2023 Extensible Markup Language (XML) Schemas, Business Rules, and Release Memorandum for the Employment Tax Forms (Form 94x series). Throughout the year, multiple versions of Schemas and Business Rules may be in use at the same time. The table reflects the effective dates in the Assurance Testing System (ATS) and Production System, for each version. Tax Year 2023 Documents Tax Year 2023 94x MeF Accepted Forms and SchedulesPDF Tax Year 2023 94x MeF ATS Information Tax Year 2023 94x MeF Forms and Attachment ListXLSX Tax Year 2023 94x MeF Return Due DatesPDF Tax Year 2023 94x MeF Stylesheets Tax Year 2023 Known Issues and SolutionsXLSX - 07/28/2023 Tax Year 2023 Form 94x (Annual Forms) Version Available Date ATS Dates Production Dates Comments 2023v1.0 06/08/2023 Start: TBD End: TBD Start: TBD End: TBD Business Rules Change Page dated 08/30/2023 Business Rules Change Page dated 07/20/2023 Tax Year 2023 Form 941x (Quarterly Forms) Version Available Date ATS Dates Production Dates Comments 2023Q1v2.1 2023Q2v2.1 2023Q3v2.1 2023Q4v2.1 02/09/2023 Start: 03/05/2023 End: TBD Start: 04/01/2023 End: TBD 2023Q1v2.0 2023Q2v2.0 2023Q3v2.0 2023Q4v2.0 11/14/2022 Start: 12/11/2022 End: TBD Start: 04/01/2023 End: TBD 2023Q1v1.0 2023Q2v1.0 2023Q3v1.0 2023Q4v1.0 07/21/2022 Not available for ATS Not available for Production 94x On-Line Signature PIN Registration Application Version Available Date ATS Dates Production Dates CUv3.0 05/17/2018 Start: 10/29/2018 End: TBD Start: 01/08/2019 End: TBD Form 9465 Version Available Date ATS Dates Production Dates CUv25.0 07/21/2022 Start: 10/24/2022 End: TBD Start: 01/23/2023 End: TBD Schemas and Business Rules for Employment Tax Modernized e-File (MeF) Forms Modernized e-File (MeF) Program Information
