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 and 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

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