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 720. You will find by Tax Year, the Extensible Markup Language (XML) schemas, business rules, and other useful information and documents. Test scenarios for all tax years are posted to the Modernized e-File (MeF) Assurance Testing System (ATS) page. Form 720 stylesheets can be downloaded for use in displaying XML tax return data. Production and Assurance Testing System (ATS) - Current valid schema Tax year 2025 2024 2023 2022 MeF XML schemas and business rules for excise tax Forms 720, 2290, and 8849
