Oklahoma Reverse Sales Tax Calculator.

Oklahoma has a state sales tax rate of 4.5%, and Oklahoma cities and counties add substantial local taxes — making Oklahoma one of the states with significant local variation. Oklahoma City and Tulsa have combined rates of approximately 8.5%–8.625%, while some rural areas are lower.

Oklahoma City has a combined rate of about 8.625% (4.5% state + Oklahoma County + OKC city taxes). Tulsa has a combined rate of approximately 8.517%. Norman and Edmond, major suburbs of Oklahoma City, have combined rates around 8.5%–8.875%. Some smaller Oklahoma communities have lower combined rates closer to 6%–7%.

Oklahoma exempts most grocery food from the state sales tax. Groceries are taxed at a zero state rate, though some local jurisdictions may apply their local rate to groceries. Prescription drugs are exempt. Agricultural inputs are broadly exempt. Manufacturing equipment used directly in production is also exempt.

Oklahoma's tribal governments have complex sales tax relationships. Federally recognized tribes in Oklahoma have sovereign status, and purchases on tribal lands may be exempt from state and local sales taxes or may be subject to tribal taxes instead. This creates complex situations for retailers operating in areas with significant tribal land.

The Oklahoma Tax Commission administers the state sales tax. Economic nexus threshold is $100,000 in annual Oklahoma sales. Oklahoma has marketplace facilitator laws. Filing is monthly for larger sellers, quarterly for smaller ones.