When Are Ohio Taxes Due 2025. Estimated tax payment due dates 2025. Quarterly taxpayers that anticipate $3 million or less in taxable gross receipts in 2025 should have filed their final.
Ohio state income tax returns for the 2023 tax year were due april 15, 2025, or are due oct. If a due date falls on a weekend or holiday, the due date is the next business day.