Ohio has published the due dates for Monthly, Quarterly, and Partial Weekly filers/payers in 2019. These dates apply to Forms IT-501 and SD-101. Partial weekly filers must submit a Quarterly Reconciliation on Form IT-942 and all filers must submit an annual reconciliation on Form IT-3. Monthly and Quarterly filers additionally submit annual returns on Forms IT-941 and SD-141.
The due dates and payment/filing cycles have not changed – except to adjust for weekends and holidays.