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Indiana Department of Revenue

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DOR > Software Professionals Software Professionals

This page is for software developers only. There is no general taxpayer information here. For taxpayer information, please visit the DOR Home Page.

The Indiana Department of Revenue has a new withholding XML schema to service WH-1 and WH-3 filings.

Effective January 1, 2017, this schema must be used for all filing years.

ERF is unavailable from December 31, 2016 at noon to January 1, 2017 at noon. The old schema may be used to submit WH-1 and WH-3 filings until 11:45 a.m. on December 31, 2016.

Federal/State online tax filing

Where do I find information on Federal/State online tax filing?

Indiana Electronic Filing Program

What are the requirements to participate in the Indiana Electronic Filing Program?

Electronic Forms Area

Where do I find information for developers whose software packages generate hard-copy Indiana tax forms?