Sales tax in Johnston County, Oklahoma
There is no single sales tax rate in Johnston County. It runs from 6.5% to 10% depending on the exact address, because cities and special districts inside the county levy their own on top of the 4.5% state rate. The 4.5% state rate applies everywhere in the county; everything above that depends on where you are standing. These rates were read from Oklahoma's own published schedule and checked on September 9, 2026.
What is the sales tax rate in Johnston County?
| Oklahoma state rate | 4.5% |
|---|---|
| Johnston County rate | 2% |
| Lowest combined rate in the county | 6.5% |
| Highest combined rate in the county | 10% |
The combined figures are the lowest and highest totals anywhere in Johnston County, so the rows above do not add up to them.
How much sales tax is that on a purchase in Johnston County?
At 6.5%, a $100 purchase carries $6.50 in sales tax and a $1,000 purchase $65.00, at the lowest rate in the county. At the highest, 10%, the same purchases carry $10.00 and $100.00. That is general merchandise; Oklahoma taxes some categories, often groceries, differently, as the note below explains.
Among Oklahoma's 77 counties, Johnston County's lowest rate ranks 7th highest, level with 20 other counties. See every Oklahoma county.
Sales tax in counties next to Johnston County
Johnston County borders 7 counties. The lowest rate next door is 5% in Bryan County, OK, which is $15.00 less on a $1,000 purchase than the lowest rate in Johnston County.
| County | Combined sales tax |
|---|---|
| Atoka County, OK | 6.5% to 10.5% |
| Coal County, OK | 6.5% to 10.5% |
| Marshall County, OK | 6.5% to 9.5% |
| Murray County, OK | 6.5% to 9.5% |
| Johnston County, OK (this county) | 6.5% to 10% |
| Carter County, OK | 5.375% to 10.375% |
| Pontotoc County, OK | 5.375% to 10.375% |
| Bryan County, OK | 5% to 9.375% |
Why the rate here is not the whole story
Oklahoma charges 4.5 percent statewide and then stacks a county rate and a city rate, and city boundaries do not follow county lines, so a single rate for the whole county does not exist. The county itself levies 2 percent countywide, and that county rate applies inside its towns as well as outside them. The floor of 6.5 percent is state plus county in the unincorporated part of the county. The ceiling of 10 percent is at Mill Creek. Oklahoma dropped the state 4.5 percent from food and food ingredients on August 29 2024, but every local rate still applies to groceries, so the figures here are the general merchandise rates.
How do I find the exact rate for an address in Johnston County?
Use Oklahoma's own address lookup. In Johnston County the rate depends on the address, anywhere from 6.5% to 10%.
Who has to collect sales tax in Johnston County?
Any seller with a physical presence in Oklahoma collects at the rate for the address of the sale; a remote seller does once it passes Oklahoma's economic nexus threshold. Oklahoma 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 Oklahoma cross its economic nexus threshold. A different question from the rate.
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Property tax in Johnston 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 Oklahoma compares with the rest of the country.
Sources
- Johnston County rates: Oklahoma Tax Commission, Rates and Codes for Sales, Use, and Lodging Tax (the COPO rate chart), third quarter 2026 edition, rates effective July 1 through September 30 2026, chart updated May 29 2026, https://oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/businesses/sales-and-use-tax/rate-charts-copos/2026/copo3Q26.pdf
- 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).