Sales tax in Warren County, Ohio
The sales tax rate in Warren County, Ohio is 6.75%. That is a 5.75% state rate plus a 1% county rate, and it is the same at every address in the county.
What is the sales tax rate in Warren County?
| Ohio state rate | 5.75% |
|---|---|
| Warren County rate | 1% |
| Combined rate | 6.75% |
Why the rate here is not the whole story
Ohio's state sales tax rate is 5.75 percent and Warren County levies a permissive county sales tax of 1 percent, for a combined 6.75 percent that applies at every address in the county. Ohio cities and villages cannot levy a general sales tax of their own. No regional transit authority levies in Warren County, so the county is the only body below the state that taxes here and the county line is the tax boundary. Ohio counties and regional transit authorities may raise their levies only in multiples of 0.05 percent, the combined state, county and transit rate may not exceed 8.75 percent, and a change can only take effect at the start of a calendar quarter. Warren County has voted to raise its permissive tax to 1.5 percent effective October 1, 2026, which will take the combined rate to 7.25 percent.
How do I find the exact rate for an address in Warren County?
The rate is the same across Warren County, but if you are collecting tax it is worth confirming against the source. Use Ohio's own lookup. A vendor's calculator is not the state speaking.
Who has to collect sales tax in Warren County?
A seller with a physical presence in Ohio collects at the rate for the address where the sale takes place. A remote seller collects once it passes Ohio's economic nexus threshold, which is a separate question from the rate and is covered on our sales tax nexus checker. Marketplace facilitators generally collect on behalf of their sellers.
How does Warren County compare?
See Ohio sales tax for the statewide picture, including the average local rate and what is exempt. Property tax is a separate tax with separate rules: property tax in Warren County.
Sources
- Warren County rates: Ohio Department of Taxation, Sales and Use Tax Rates listed by county and transit authority, 2025 4th Quarter table effective October 1, 2025, https://tax.ohio.gov/wps/portal/gov/tax/business/sales-and-use-tax/rate-tables/by-county-q4-2025, still the rate in force on September 9, 2026 because the Department posted no county rate change for the 1st, 2nd or 3rd quarters of 2026. State, county permissive and transit components split using the Department's Streamlined Sales Tax rate file OHR2026Q1NOV28.csv and OHTransitFIPSCodes.txt, both downloaded from The Finder at https://thefinder.tax.ohio.gov, and cross checked against the Department's Ohio County Rate Table by Zip Code, CountySalesTaxRateReport.csv
- Collected and verified September 9, 2026. Confidence: P on the rate components, P on the range (P read on a primary agency page, S strong but indirect, U unverified).