You file Ohio sales tax online through the Ohio Business Gateway (OH|TAX eServices), using the UST-1 return. Monthly returns are due on the 23rd of the month after the reporting period, and semiannual returns are due January 23 and July 23. Ohio requires every sales and use tax filer to file electronically, so there is no paper option. This guide covers who files and how often, how to file and amend a return, how to file a zero return, the on-time discount, and what late filing can cost.
This article is educational information, not tax advice. Filing rules, thresholds, and penalties can change, so confirm current requirements with the Ohio Department of Taxation before you file.
Ohio sales tax filing at a glance
- Who administers it: Ohio Department of Taxation.
- Online portal: Ohio Business Gateway, with returns managed from your OH|TAX eServices dashboard. Electronic filing is required for all sales and use tax filers.
- Return: UST-1, the universal sales tax return.
- Filing frequency: Monthly, semiannual, or EFT, assigned by the Department of Taxation.
- Due date: The 23rd of the month after the reporting period. If the 23rd falls on a weekend or holiday, the due date is the next business day.
- Zero returns: Required. A return is due even when you made no sales or owe no tax.
- Payment: Electronic funds transfer (EFT) is mandatory once your liability exceeds $75,000 in a calendar year.
- Economic nexus: More than $100,000 in gross receipts or at least 200 transactions in the current or previous calendar year.
Who has to file, and how often
Every business with an Ohio vendor's license (or a seller's use tax license, for remote sellers) has to file a return when it is due. Ohio's economic nexus rule took effect August 1, 2019: a seller with more than $100,000 in gross receipts, or at least 200 transactions, in either the current or previous calendar year has substantial nexus and must collect tax, file returns, and remit the tax. Our Ohio sales tax guide covers registration and nexus in more detail. Selling software? Our post on Ohio SaaS sales tax explains how it is treated there.
The Department of Taxation sends you a letter about your filing schedule shortly after you get your license. Schedules are set from your anticipated tax liability or your business activity.
| Frequency | Due date |
|---|---|
| Monthly | The 23rd of the month after the reporting period (April sales are due May 23) |
| Semiannual | January 23 and July 23, for the previous six-month periods |
| EFT (accelerated payments) | Payment for the current month by the 23rd of that month, with the rest due when the return is filed on the 23rd of the following month |
Rules for moving between schedules are published in the Department's FAQ on changing filing frequency. File on the schedule in your most recent notice, not the one you think you qualify for.
Before you start: the Ohio Business Gateway
The Ohio Business Gateway is the state's free online hub for business filings. To file sales tax there:
- Have your license ready. You need an active Ohio vendor's license or seller's use tax license. Out-of-state sellers that meet the nexus thresholds get a seller's use tax license. If you are not registered yet, our sales tax permit overview explains how registration works.
- Log in to your eServices account. Your dashboard shows the current filing period and links to past ones.
- Have your records ready. You will need gross sales, exempt and other deductible sales, and taxable sales for the period, broken out by county if you sold into more than one. For sales to resellers, see our Ohio resale certificate guide.
Step-by-step: filing a UST-1 return
The Department publishes the flow in its business self-help library. In short:
- Log in and, from your OH|TAX eServices dashboard, select the File now link for the current filing period. For any other period, use Manage your returns: view, file or amend.
- Enter your sales. The UST-1 reports your sales and the tax due. Ohio's tax is the 5.75% state rate plus a county tax and, in some places, a transit authority tax, so sales into different counties can carry different rates.
- Report by county if needed. If you sell into several counties, the Department offers two upload options: a UST-1 county file upload for multi-county sales and liability data, and a full UST-1 file upload that carries every line of the return.
- Review the discount and total. If you file and pay in full by the due date, you can take the vendor's timely filing discount (see below).
- Pay. Submit payment with the return. EFT is required once your liability passes $75,000 in a calendar year.
- Save your confirmation. Keep it with your records for the period.
To amend a return, open Manage your returns: view, file or amend, find the period, select View or Amend Return, then choose Amend.
Filing in Ohio plus other states?
Ohio is one due date among many. If you sell in more than one state, Kintsugi files and remits for you, from $75 per filing, with free monitoring that shows where you owe. Start free or book a demo.
Due dates and the weekend rule
Monthly returns are due on the 23rd of the month following the reporting period. Semiannual returns are due January 23 and July 23. When the 23rd falls on a weekend or holiday, the return is due the next business day. Our Ohio sales tax due dates page lists upcoming dates for every state.
For taxpayers who must make accelerated payments, the payment for the month is due on the 23rd of that month, the same day the previous month's return is due. The remaining tax for the month is paid when you file that month's return by the 23rd of the following month.
Filing a zero return
You must file even when you had no sales. The Department states that returns must be filed when due even if no sales were made or no tax is due. File the UST-1 in the Ohio Business Gateway and enter zero for the period.
Payment: when EFT is required
Taxpayers whose liability exceeds $75,000 in any calendar year must pay sales and use tax by electronic funds transfer, and must make accelerated payments beginning in the second following year and each year after. A $50 fee applies to every returned check.
The vendor's timely filing discount
If you file the UST-1 and pay the full amount due on or before the due date, Ohio has historically let vendors keep three-fourths of one percent (0.75%) of the amount due. For returns required to be filed on or after January 1, 2026, that discount is capped at $750 per vendor's license for each month covered by the return. The cap does not apply to the sale or lease of motor vehicles. The discount only applies if the return and full payment reach the Department by the due date.
Penalties and interest for late filing
- Failure to timely remit collected tax: A penalty of up to 50% of the tax due may be assessed.
- Interest: May be due on any tax found due and not paid on time.
- Returned payments: A $50 fee for every returned check.
- Lost discount: A return or payment that arrives after the due date forgoes the timely filing discount.
Common mistakes to avoid
- Skipping zero returns. A return is due every period, even with nothing to report.
- Using one rate for the whole state. Ohio tax is the 5.75% state rate plus county and transit authority tax. Check the Department's rate tables for the county you ship to, and see our Ohio sales tax calculator.
- Filing on the wrong schedule. Use the frequency in your latest notice from the Department.
- Paying late and losing the discount. The timely filing discount needs the return and full payment by the due date.
- Missing the EFT switch. Once your liability passes $75,000 in a calendar year, EFT and accelerated payments apply.
- Ignoring nexus. Remote sellers can owe Ohio tax after crossing $100,000 in gross receipts or 200 transactions, without any physical presence.
More state filing guides
Filing in more than one state? These step-by-step guides cover the portals, due dates, and penalties in other states. See them all in our state-by-state guide to filing sales tax online.
- How to file Illinois sales tax online
- How to file Pennsylvania sales tax online
- How to file Georgia sales tax online
Let Kintsugi file for you
If you would rather not track Ohio's schedule and the 23rd-of-the-month deadline yourself, Kintsugi's sales tax filing software prepares and files your Ohio returns, remits the tax, and files zero returns when you had no sales. Kintsugi's free plan monitors your sales across every US state so you know where you need to register. Filing starts at $75 per filing, with no per-state subscription. See pricing.
Frequently asked questions
How do I file Ohio sales tax online?
Through the Ohio Business Gateway. Log in to your OH|TAX eServices account, select File now for the current period, and complete the UST-1 return. Ohio requires all sales and use tax returns to be filed electronically.
What form do I use to file Ohio sales tax?
The UST-1, the universal sales tax return. You enter the same information online in the Ohio Business Gateway.
When is Ohio sales tax due?
Monthly returns are due on the 23rd of the month after the reporting period. Semiannual returns are due January 23 and July 23. If the 23rd falls on a weekend or holiday, the due date is the next business day.
Do I have to file if I had no sales?
Yes. Ohio requires a return to be filed when due even if you made no sales or owe no tax.
How do I amend an Ohio sales tax return?
From your OH|TAX eServices dashboard, select Manage your returns: view, file or amend, find the period, choose View or Amend Return, and select Amend.
What is the Ohio economic nexus threshold?
More than $100,000 in gross receipts or at least 200 transactions in the current or previous calendar year. Sellers over the threshold must obtain a license, collect tax, file returns, and remit it.
What is the penalty for filing Ohio sales tax late?
A penalty of up to 50% of the tax due may be assessed when collected tax is not timely remitted, and interest may apply. You also lose the timely filing discount.
Is there a discount for filing on time?
Yes. Vendors who file and pay in full by the due date can take a 0.75% discount, capped at $750 per vendor's license for each month covered by returns due on or after January 1, 2026.
Sources
Checked September 29, 2026.
- Ohio Department of Taxation, Ohio Business Gateway
- Ohio Department of Taxation, File Original and Amended Returns (Business)
- Ohio Department of Taxation, Sales and Use, Information for Vendors (Licensing and Filing)
- Ohio Department of Taxation, Can my filing frequency ever be changed
- Ohio Department of Taxation, Sales and Use Tax: Substantial Nexus
- Ohio Department of Taxation, Out of State Sellers
- Ohio Department of Taxation, ST 2025-02, Vendor Timely Filing Discount
- Ohio Department of Taxation, ST 2007-06, Accelerated and Electronic Sales and Use Tax Payments
- Ohio Department of Taxation, Sales and Use Tax Rates by County
