Sales tax in Warren County, Ohio
The sales tax rate in Warren County, Ohio is 7.25%. That is a 5.75% state rate plus a 1.5% county rate, and it is the same at every address in the county. That rate was read from Ohio's own published schedule and checked on October 1, 2026.
What is the sales tax rate in Warren County?
| Ohio state rate | 5.75% |
|---|---|
| Warren County rate | 1.5% |
| Combined rate | 7.25% |
How much sales tax is that on a purchase in Warren County?
At 7.25%, a $100 purchase carries $7.25 in sales tax and a $1,000 purchase $72.50. That is general merchandise; Ohio taxes some categories, often groceries, differently, as the note below explains.
Among Ohio's 88 counties, Warren County's rate ranks 8th highest, level with 50 other counties. See every Ohio county.
Sales tax in counties next to Warren County
Warren County borders 6 counties. The lowest rate next door is 6.5% in Butler County, OH, which is $7.50 less on a $1,000 purchase than Warren County's rate.
| County | Combined sales tax |
|---|---|
| Hamilton County, OH | 7.8% |
| Montgomery County, OH | 7.5% |
| Clinton County, OH | 7.25% |
| Warren County, OH (this county) | 7.25% |
| Clermont County, OH | 6.75% |
| Greene County, OH | 6.75% |
| Butler County, OH | 6.5% |
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 1.5 percent, for a combined 7.25 percent that applies at every address in the county. The county raised its tax from 1 percent, which had made the combined rate 6.75 percent, effective October 1, 2026. 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.
How do I find the exact rate for an address in Warren County?
Use Ohio's own address lookup.
Who has to collect sales tax in Warren County?
Any seller with a physical presence in Ohio collects at the rate for the address of the sale; a remote seller does once it passes Ohio's economic nexus threshold. Ohio sales tax covers the statewide rules and what is exempt.
Work out your own numbers
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Sales tax calculator
Tax on a specific purchase at this county's rate, and the total you will actually pay.
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Do you have to collect?
Whether your sales into Ohio cross its economic nexus threshold. A different question from the rate.
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Property tax in Warren County
The other local tax: effective rate and median bill for this county.
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Sales tax by county
Every US county, and how Ohio compares with the rest of the country.
Sources
- Warren County rates: Ohio Department of Taxation, Tax Analysis, Sales and Use Tax Rate Map, dated September 9, 2026, showing state and permissive sales and use tax rates in effect as of October 1, 2026 with a table by county, https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/tax_analysis/tax_data_series/sales_and_use/Salestaxmap.pdf. The 5.75 percent state rate and the absence of a transit levy are as in the Department's earlier rate table.
- Collected and verified October 1, 2026. Confidence: P on the rate components, P on the range (P read on a primary agency page, S strong but indirect, U unverified).