The tables below provide links to the Tax Year 2019 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 2019 Documents Tax Year 2019 94x MeF Accepted Forms and Schedules PDFTax Year 2019 94x MeF ATS InformationTax Year 2019 94x MeF Forms and Attachment List XLSXTax Year 2019 94x MeF Return Due Dates PDFTax Year 2019 94x MeF StylesheetsTax Year 2019 Known Issues and Solutions (Updated 11/05/2020) XLSX Tax Year 2019 Form 94x (Annual Forms) Version Available Date ATS Dates Production Dates 2019v1.0 07/23/2019 Start: 11/04/2019 End: TBD Start: 01/07/2020 End: TBD Tax Year 2019 Form 941x (Quarterly Forms) Version Available Date ATS Dates Production Dates 2019v1.0 05/17/2018 Start: 10/29/2018 End: TBD Start: 04/01/2019 End: TBD 94x Online 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 CUv24.0 10/17/2020 Start: 11/22/2020 End: TBD Not Valid in Production CUv23.0 09/02/2020 Start: 11/02/2020 End: TBD Not Valid in Production CUv22.0 07/22/2020 Not Valid in ATS Not Valid in Production CUv21.0 07/23/2019 Start: 11/04/2019 End: TBD Start: 01/07/2020 End: TBD CUv20.0 10/17/2018 Start: 12/09/2018 End: 11/03/2019 Start: 01/08/2019 End: 01/06/2020 -------------------------------------------------------------------------------- Schemas and Business Rules for Employment Tax Modernized e-File (MeF) Forms PageModernized e-File (MeF) Program Information Page
