Oklahoma’s medical marijuana industry brought in over $280 million in sales during the first five months of 2025, according to newly released data from the Oklahoma Medical Marijuana Authority.
From January through May, the state collected $19,609,312 in excise tax revenue from medical marijuana sales. With a 7% tax rate, that equates to approximately $280,133,029 in total sales during that period.
In May alone, the state garnered $3,907,287 in tax revenue, corresponding to $55,818,385 in sales. April brought in $3.91 million in taxes from $55.9 million in sales, marking two of the strongest consecutive months so far this year.
Despite a gradual decline in registered patient numbers, Oklahoma’s medical marijuana program continues to generate consistent monthly revenue and remains one of the most active medical-only markets in the country.
The 7% marijuana excise tax is allocated to the state’s General Revenue Fund, supporting a wide range of core government services.
Oklahoma voters approved medical marijuana through State Question 788, leading to the launch of a uniquely open and low-barrier medical marijuana system. Dispensaries began operating in October 2018, and since then, the program has flourished, drawing widespread participation from both patients and businesses.
As of 2025, Oklahoma’s market stands out for its accessibility and volume, even without recreational legalization. While the state has seen a modest drop in active patient licenses compared to prior years, tax revenue and sales have remained resilient, with monthly totals consistently near or above $50 million so far this year.
