Ohio sales tax is due on the 23rd day of the month following the end of your reporting period. If you file monthly, tax collected in January is due February 23; if you file semiannually, the first-half return (January through June) is due July 23, and the second-half return (July through December) is due January 23 of the following year.1Ohio Legislative Service Commission. Ohio Administrative Code Rule 5703-9-13 – Sales and Use Tax Reporting Periods Payment is due at the same time as the return.
Which Filing Schedule Applies to You
The Ohio Tax Commissioner assigns your filing frequency based on how much sales tax your business collects. Semiannual filing is the default for lower-volume vendors, and you qualify as long as your tax liability stays below $1,200 per six-month period.2Ohio Department of Taxation. Sales and Use Tax
Once your collections reach or exceed $1,200 in a six-month period, the state moves you to monthly filing. Under Ohio Revised Code 5739.12, the Tax Commissioner reviews vendor activity to set the appropriate reporting schedule and may require a reconciliation return at the end of each semiannual period that details total sales activity for the preceding months.3Ohio Legislative Service Commission. Ohio Code 5739.12 – Monthly Return by Vendor – Reconciliation Return If you cross the threshold mid-year, the Department of Taxation will notify you of the change.
Monthly Deadlines
For monthly filers, the 23rd rule rolls through the calendar: January’s tax is due February 23, February’s by March 23, and so on.
Semiannual Deadlines
- January through June: return and payment due by July 23.
- July through December: return and payment due by January 23 of the following year.
There is no separate payment deadline. If you file the return but don’t send the money, the state treats the tax as late.
When the 23rd Falls on a Weekend or Holiday
If the 23rd lands on a Saturday, Sunday, or a state or federal holiday, the deadline shifts automatically to the next business day. You don’t need to request an extension. If July 23 falls on a Saturday, both monthly and semiannual returns for that period are due the following Monday, or Tuesday if Monday is also a holiday.
Watch the calendar at the start of each year and schedule electronic payments in advance. Payments initiated on the deadline itself sometimes don’t process until the next business day, which can count as late.
The Discount for Filing On Time
Ohio rewards vendors who file and pay on time with a discount equal to 0.75% of the tax due on that return. It’s calculated on the amount reported on Line 6 of the UST-1 form.2Ohio Department of Taxation. Sales and Use Tax
Starting with returns due on or after January 1, 2026, the discount is capped at $750 per vendor’s license for each month covered by the return. The cap does not apply to sales or leases of motor vehicles.3Ohio Legislative Service Commission. Ohio Code 5739.12 – Monthly Return by Vendor – Reconciliation Return
To claim it, the completed return and full payment both have to reach the Department of Taxation by the due date. Filing even one day late forfeits the discount for that period.
What Happens If You File Late
Ohio imposes both penalties and interest when a vendor files late or underpays. Under Ohio Revised Code 5739.13, any portion of a sales tax assessment that remains unpaid more than 60 days after the assessment date begins accruing interest at the rate set by the Tax Commissioner under Section 5703.47 of the Revised Code.4Ohio Legislative Service Commission. Ohio Code 5739.13 – Liability of Vendor and Consumer
If the unpaid balance is referred to the Attorney General for collection, interest continues to accrue on the entire outstanding amount until it is paid in full. The state can also file a judgment against your business in the court of common pleas where your business is located, giving the judgment the same collection power as any other court judgment.
There’s a reputational cost too. Repeatedly missing deadlines can trigger closer scrutiny from the Department of Taxation. Sales tax is treated as a trust tax, meaning money you collected on the state’s behalf, so failing to remit it is treated seriously.2Ohio Department of Taxation. Sales and Use Tax
Out-of-State Sellers Have the Same Deadlines
If you sell into Ohio from another state, the same 23rd-of-the-month deadline applies once you have a filing obligation. Ohio establishes economic nexus when an out-of-state seller exceeds either of these thresholds in the current or previous calendar year:
- $100,000 in gross receipts from sales delivered to Ohio buyers, or
- 200 or more transactions with Ohio buyers.
Marketplace sales count toward these thresholds.5Ohio Department of Taxation. Sales and Use Tax – Substantial Nexus and Marketplace Facilitator Once you cross either one, you need an Ohio vendor’s license and must begin collecting. If you sell only through a marketplace facilitator such as Amazon or Etsy, the facilitator typically handles collection and remittance for you, but confirm that with the platform before assuming you have no return to file.