The Oklahoma (OK) state sales tax rate is currently 4.5%. Depending on local municipalities, the total tax rate can be as high as 11.5%.

Other, local-level tax rates in the state of Oklahoma are quite complex compared against local-level tax rates in other states. Oklahoma sales tax may also be levied at the city/county/school/transportation and SPD (special purpose district) levels.

Oklahoma sales tax has numerous local taxing levels that must be monitored and maintained on a regular basis, it is complex and time consuming due to the volume of jurisdictions.

Oklahoma was noted in Kiplinger’s 2011 10 tax-friendly states for retirees. The only “…thing to watch out for: cities, towns and counties may levy additional sales taxes, which can make the combined sales tax rate top 8%.”

Sales tax must be collected in Oklahoma when delivery or transfer of possession of taxable tangible personal property or services occurs within the state.

As a Streamlined Sales Tax state, Oklahoma encourages out-of-state businesses without a sales tax obligation  to register with the state and collect.

How to Register

Online registration through Oklahoma Taxpayer Access Point (OkTAP) is encouraged. Business registration applications and additional information are available here.

Businesses selling into multiple states may register with the Streamlined Sales Tax Project.

How to File and Pay

Sales tax returns must be filed online through OKTAP unless the Tax Commission grants an exception to the electronic filing requirement. Vendors must apply for this exception to the Business Tax Electronic Filing Coordinator. EFT, credit card and debit card payments are accepted online.

Most businesses are required to file monthly sales tax returns. However, the Tax Commission may allow businesses reporting less than $50 in sales tax monthly to report semi-annually.


Sales tax returns are due on or before the 20th day of the month following each reporting period.