The tables below provide links to the Tax Year 2020 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 2020 Documents Tax Year 2020 94x MeF Accepted Forms and Schedules PDFTax Year 2020 94x MeF ATS InformationTax Year 2020 94x MeF Forms and Attachment List XLSXTax Year 2020 94x MeF Return Due Dates PDFTax Year 2020 94x MeF Stylesheets Tax Year 2020 Known Issues and Solutions XLSX- (Updated 07/28/2020) Tax Year 2020 Form 94x (Annual Forms) Version Available Date ATS Dates Production Dates 2020v1.1 10/17/2020 Start: 11/02/2020 End: TBD Start: TBD 2020v1.0 07/22/2020 Start: 11/02/2020 End: TBD Start: TBD End: TBD Tax Year 2020 Form 941x (Quarterly Forms) Version Available Date ATS Dates Production Dates 2020v1.1 06/15/2020 Start: 06/07/2020 End: TBD Start: 06/21/2020 End: TBD 2020v1.0 07/02/2019 Start: 11/04/2019 End: TBD Start: 04/01/2020 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 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: 10/15/2019 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
