The following links provide information and technical guidance for Software Developers and Transmitters who are interested in developing software for the Employment Tax Modernized e-File (MeF) Forms. You will find the Extensible Markup Language (XML) Schemas, Business Rules, and other useful information and documents by tax year. Production & Assurance Testing System (ATS) Schemas and Business Rules by Tax Year Tax Year Form Types 2024 940, 941, 943, 944, 945, and 94x On-Line Signature PIN Registration Application 2023 940, 940-PR, 941, 941-PR, 941-SS, 943, 943-PR, 944, 945, and 94x On-Line Signature PIN Registration Application 2022 940, 940-PR, 941, 941-PR, 941-SS, 943, 943-PR, 944, 945, and 94x On-Line Signature PIN Registration Application 2021 940, 940-PR, 941, 941-PR, 941-SS, 943, 943-PR, 944, 945, and 94x On-Line Signature PIN Registration Application 2020 940, 940-PR, 941, 941-PR, 941-SS, 943, 943-PR, 944, 945, and 94x On-Line Signature PIN Registration Application Software Testing Testing information for the Employment Tax Forms is provided on the Modernized e-File (MeF) Assurance Testing System (ATS) page. Employment Tax e-Signature Methods The Employment Tax e-Signature Methods document communicates the signature methods for various Employment Tax Stakeholders. Employment Tax e-File Frequently Asked Questions The Modernized e-File for Employment Taxes FAQs communicate common questions and answers regarding the Employment Tax e-File Program. Stylesheets Employment Tax MeF form Stylesheets can be downloaded for use in displaying XML tax return data. Modernized e-File (MeF) Schemas and Business Rules Modernized e-File (MeF) Program Information
