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, 990-T, 1120-POL, 8868, 4720, 5227, 5330, and 8038-CP. You will find the XML schemas, business rules and other useful information separated by tax year. Test scenarios for the Form 990 family, 990-N, 990-T, 1120-POL, 8868, 4720, 5227, 5330, and 8038-CP are listed on the Exempt organizations and other tax-exempt entities MeF Assurance Testing System (ATS) test scenarios page. Stylesheets – Forms 990/990EZ/990-N/990-PF/990-T/1120-POL/8868/4720/5227/5330/8038-CP and corporate Forms 1120/1120S/7004 stylesheets can be downloaded for use in displaying XML tax return data. Production and Acceptance Testing System (ATS) - Current valid schemas Tax year Form type 2024 Form 990 family*, 990N, 990T, 1120POL, 8868, 4720, 5227, 5330, 8038CP (2025) 2023 Form 990 family*, 990N, 990T, 1120POL, 8868, 4720, 5227, 5330, 8038CP (2024) 2022 Form 990 family*, 990N, 990T, 1120POL, 8868, 4720, 5227, 5330, 8038CP (2023) 2021 Form 990 family*, 990N, 990T, 1120POL, 8868, 4720, 5330, 8038CP (2022) * Includes 990, 990EZ, 990PF Back to EO MeF XML schemas and associated information
