Software Developers

Substitute Tax Forms

Requirements for Substitute 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

The Deadline for submitting Letters of Intent for the upcoming Modernized Electronic Filing was Oct 31. 2019. Modernized e-File (MeF) Assurance Testing System (ATS) should begin December 1, 2019. Please refer to the MeF Handbook for further information.

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

National Association of Computerized Tax Processors