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 2290 for Tax Year (TY) 2019. Form 2290 Schemas and Business Rules Distribution is now 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 schema and business rules packages. Refer to the Release Memorandum for 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 2290 can be found on the Modernized e-File (MeF) Assurance Testing System (ATS) Updates page located on irs.gov. XML Schemas, Business Rules and Release Memo - 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 2019 Documents Tax Year 2019 2290 MeF Accepted Forms and Schedules PDF Tax Year 2019 2290 MeF Return Due Date PDF Tax Year 2019 Stylesheets: MeF Stylesheet Tax Year 2019 Known Issues and Solutions (XLSX) – Revised 10/02/2020 Release Memo Schema Version ATS Date Production Date Comments 07/23/2019 2019v1.1 11/04/2019 01/07/2020 Business Rules Change Page dated 09/03/2019 Business Rules Change Page dated 07/22/2020 05/30/2019 2019v1.0 06/13/2019 07/01/2019 Form 9465 Version Date Posted ATS Date Production Date CUv21.0 07/23/2019 Start: 11/04/2019 End: Start: 01/07/2020 End: CUv20.0 10/17/2018 Start: 12/09/2018 End: 10/15/2019 Start: 01/08/2019 End: 01/06/2020 Back to Valid XML Schemas and Business Rules for Form 2290 Modernized e-File (MeF) page.