The following links provide information and technical guidance for software developers and transmitters who are interested in developing software for the Modernized e-File Forms 990, 990-EZ, 990-PF, 990-N, 1120-POL and 8868. You will find the XML Schemas, Business Rules and other useful information separated by Tax Year. Test scenarios for TY2021 are available on the Tax Year 2021 Exempt Organizations MeF Test Assurance System Test Scenarios webpage. Prior year test scenarios for 2020 and 2019 are available on the Exempt Organizations MeF Test Assurance System webpage. Stylesheets – Forms 990/990EZ/990-N/990-PF/990-T/1120-POL/8868 and corporate Forms 1120/1120S/7004 stylesheets can be downloaded for use in displaying XML tax return data. Production & Acceptance Testing System (ATS) - Current Valid Schemas Tax Year Form Type 2020 Form 990 family*, 990N, 990-T, 1120POL, 8868 2019 Form 990 family*, 990N, 1120POL, 8868 2018 Form 990 family*, 990N, 1120POL, 8868 * Includes 990, 990EZ, 990PF Back to EO MeF XML Schemas and Associated Information
