Sales tax in Kay County, Oklahoma
There is no single sales tax rate in Kay County. It runs from 5.75% to 10.75% 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 Kay County?
| Oklahoma state rate | 4.5% |
|---|---|
| Kay County rate | 1.25% |
| Lowest combined rate in the county | 5.75% |
| Highest combined rate in the county | 10.75% |
The combined figures are the lowest and highest totals anywhere in Kay County, so the rows above do not add up to them.
How much sales tax is that on a purchase in Kay County?
At 5.75%, a $100 purchase carries $5.75 in sales tax and a $1,000 purchase $57.50, at the lowest rate in the county. At the highest, 10.75%, the same purchases carry $10.75 and $107.50. That is general merchandise; Oklahoma taxes some categories, often groceries, differently, as the note below explains.
Among Oklahoma's 77 counties, Kay County's lowest rate ranks 47th highest, level with 5 other counties. See every Oklahoma county.
Sales tax in counties next to Kay County
Kay County borders 6 counties, 2 of them in another state. The lowest rate next door is 4.85% in Garfield County, OK, which is $9.00 less on a $1,000 purchase than the lowest rate in Kay County.
| County | Combined sales tax |
|---|---|
| Sumner County, KS | 7.5% to 10.5% |
| Cowley County, KS | 6.5% to 9.5% |
| Noble County, OK | 6% to 11% |
| Grant County, OK | 5.75% to 10.75% |
| Osage County, OK | 5.75% to 10.25% |
| Kay County, OK (this county) | 5.75% to 10.75% |
| Garfield County, OK | 4.85% to 9.35% |
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 1.25 percent countywide, and that county rate applies inside its towns as well as outside them. The floor of 5.75 percent is state plus county in the unincorporated part of the county. The ceiling of 10.75 percent is at Blackwell. 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 Kay County?
Use Oklahoma's own address lookup. In Kay County the rate depends on the address, anywhere from 5.75% to 10.75%.
Who has to collect sales tax in Kay 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 Kay 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
- Kay 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).