Ohio manufacturers subject to the state’s Commercial Activity Tax (CAT) should prepare for an important filing transition. The Ohio Department of Taxation announced that third-quarter CAT returns, due Nov. 10, will be the last filed through the Ohio Business Gateway before the tax moves to the state’s OH|TAX eServices platform.
CAT filing through the Ohio Business Gateway will end Nov. 23, with all CAT accounts transitioning to OH|TAX on Dec. 7. The new system will allow businesses to file returns, make payments, review refund status and manage tax accounts through a single online platform.
“Tax compliance is complicated enough without unexpected disruptions to filing systems,” said Jacob Sargent, director of public policy services for the Ohio Manufacturers’ Association. “Manufacturers should confirm their account access, review the upcoming deadlines and make sure their accounting teams are ready before the transition begins.”
Businesses should ensure employees responsible for tax filings have individual OHID logins and multifactor authentication enabled. Existing Ohio Business Gateway account access will transfer automatically. Manufacturers can review the state’s transition guidance for additional information. 11/2/2026