Ohio CAT Filing Reminders Set Compliance Timeline for 2025
Ohio CAT filing reminders and timing for 2025 are shaping how businesses prepare for the upcoming tax year as revised thresholds and quarterly filing rules take effect. The Commercial Activity Tax remains a gross-receipts tax, but updated requirements now determine who must file and when. State tax officials are urging businesses to review their status early to avoid penalties.
The Commercial Activity Tax applies at a rate of 0.26 percent on taxable gross receipts. For 2025, the annual exclusion has increased from $3 million to $6 million, removing CAT liability for businesses with receipts at or below that threshold. The Ohio Department of Taxation confirmed that the higher exclusion applies going forward.
At the same time, annual CAT filing has been eliminated. Beginning with tax year 2024, all businesses with active CAT accounts must file quarterly returns, even when no tax is owed. As a result, some firms below the exclusion may still face filing obligations unless they cancel their accounts.
Quarterly CAT due dates in 2025 follow a fixed schedule. First-quarter returns covering January through March are due May 10, 2025. Second-quarter filings are due August 10, 2025, with deadlines adjusted when they fall on weekends.
Third-quarter returns are due November 10, 2025, and fourth-quarter filings are due February 10, 2026. The Department of Taxation has issued multiple reminders emphasizing that missed deadlines can trigger penalties regardless of tax liability.
All CAT returns and payments must be submitted electronically through the Ohio Business Gateway. Paper filings are no longer accepted, including for zero-tax returns and account updates. State officials have reiterated that electronic filing applies to all active CAT accounts.
Businesses that exceed the $6 million threshold must register within 30 days of exceeding it. Once registration is completed, accounts typically become active within three business days.
Failure to register on time can result in penalties of up to $100 per month, capped at $1,000. Late filing or payment may also trigger penalties of up to 10 percent of the tax due or $50, whichever is greater, according to Department of Taxation guidance.
Businesses expecting taxable gross receipts of $6 million or less for 2025 are encouraged to cancel their CAT accounts to avoid quarterly filing requirements. The Department of Taxation recommends cancellation through the Ohio Business Gateway, either by selecting the cancellation option when filing a final return or by submitting a Business Account Update Form.
When canceling, taxpayers must choose an effective date that aligns with their final filing period. Failure to cancel can leave businesses subject to ongoing filing obligations even when no CAT is owed.
For businesses that remain registered, the $6 million exclusion is applied automatically throughout the year. Any unused portion carries forward to later quarters, ensuring CAT is imposed only once total taxable receipts exceed the annual threshold.
Ohio CAT filing reminders and the 2025 filing timeline highlight the need for early planning and careful account review. Businesses approaching the $6 million threshold should monitor receipts closely to avoid late registration penalties. Companies below the threshold should evaluate whether account cancellation is appropriate.
State officials recommend retaining documentation supporting exclusion calculations, quarterly filings, and account status changes. Early compliance can help businesses avoid penalties and unnecessary filings as quarterly CAT reporting continues.
By William Mc Lee, Editor-in-Chief & Tax Expert—Get Tax Relief Now
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