The links below provide information and technical guidance for Software Developers and Transmitters who are interested in developing software for the Modernized e-File (MeF) Form 7004 for Tax Year 2020. Developers and other Authorized IRS e-file Providers can find information on e-filing returns through MeF in Publication 4163PDF and Publication 4164PDF. Test Scenarios for the Form 7004 family 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 and Production. Form 7004 Schemas and Business Rules are now distributed through the Registered User Portal and your e-services mailbox. This mailbox is part of the Secure Object Repository (SOR). Users will access their mailbox in their existing e-services account to pick up the Schemas and Business Rules packages. Instructions for accessing the SOR mailbox Tax Year 2020 Documents Tax Year 2020 Form 7004 MeF Return Due DatesPDF Tax Year 2020 Stylesheets: MeF Stylesheets Tax Year 2020 Known Issues and SolutionsXLSX – Revised 02/23/2023 Form 7004 links to TY2020 Release Memos Version Available Dates ATS Date Production Dates Comments 2020v2.0 10/19/2020 Start: 11/22/2020 End: TBD Start: 01/08/2021 End: TBD 06/09/2022 Business rules updates provided Current Valid XML Schemas and Business Rules for Form 7004 Modernized e-File (MeF) Schemas and Business Rules
