Indiana Income Tax Withholding Payment and Filing Requirements
Employers in Indiana must conform with these state rules relating to filing income tax withholding returns.
Periodic Returns. Monthly (Form WH-1) due within 30 days after the end of the month. Quarterly, semi-annual, and annual filing may be permitted due by the last day of the month following the reporting period (Form WH-1).
Annual Reconciliation Returns. Form WH-3 due by February 28.