Software Developers

Substitute Tax Forms

Requirements for the Approval of Substitute Tax Forms - This publication provides information necessary for the development of substitute forms. Software developers must comply with the requirements in this publication to gain approval by the Department.

Modernized Electronic Filing

Please refer to the MEF Handbook for further information. This publication provides information on specifications, requirements, and instructions applicable to the West Virginia State Electronic Filing (MEF) Program.

Tax Year 2021 Modernized Electronic Filing season will begin later this year. The Letter of Intent (LOI) has not yet been released. Once it is released, it will be due Oct.31, 2021.

National Association of Computerized Tax Processors

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