Castle, Oklahoma sales tax rate: 6.5%
Last updated Checked monthly
The sales tax rate in Castle, Oklahoma is 6.5%. That’s the 4.5% state rate plus 2% in local taxes. It’s higher than 3 of the 73 Oklahoma cities we checked, and 2 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Castle combined rate
6.5%
- Oklahoma state
- 4.5%
- Okfuskee CountyCounty
- 2%
Castle sales tax calculator
Enter a price and what you’re selling.
- OklahomaState · 4.5%$4.50
- Okfuskee CountyCounty · 2%$2.00
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoCastle sales tax rate breakdown
State and county taxes add up to 6.5%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Oklahoma | State | 4.5% |
| Okfuskee County | County | 2% |
| Combined rate | 6.5% |
Rate history
- July 20236.5%
- July 20246.5%
- July 20256.5%
- July 20266.5%
- Today6.5%
No change since July 2023.
Charge the right rate in Castle, on every order.
Zamp calculates tax at each customer’s address, then files and pays every Oklahoma return for you, with a sales tax team you can call.
Castle sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Castle, Oklahoma?
The combined sales tax rate in Castle is 6.5% as of November 3, 2026. It’s made up of 4.5% Oklahoma state tax, 2% Okfuskee County.
Does the sales tax rate vary within Castle?
Castle has no special-district taxes, so most addresses in the city pay the same 6.5%: Oklahoma’s 4.5% plus 2% county tax. This rate was calculated for Castle’s 74833 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Castle?
No.
Do online sellers have to collect sales tax in Castle?
Yes, if they have nexus in Oklahoma: more than $100,000 in Oklahoma sales in the previous or current calendar year, or a physical presence in the state. They register with the Oklahoma Tax Commission and charge the rate at the buyer’s address.
Sources. Oklahoma Tax Commission · Zamp Sales Tax API, for Castle’s 74833 ZIP code. Rates are checked monthly and are for information, not tax advice.
Sales tax, off your plate.
Zamp registers you, calculates every order at the customer’s address, files every Oklahoma return and handles notices, with a sales tax team you can call.
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