Missouri vs Kansas Cannabis Laws

Missouri has rapidly become one of the most significant cannabis markets in the Midwest. Voters approved Amendment 3 in November 2022, legalizing recreational cannabis, and adult-use sales launched in February 2023. The state's medical program, established through Amendment 2 in 2018, had already built a robust infrastructure with over 200 licensed dispensaries and a large registered patient base.

The Missouri market has exceeded expectations, with annual sales quickly surpassing $1.5 billion. The state benefits from a population of over 6 million, the Kansas City and St. Louis metropolitan areas, and minimal competition from neighboring states (Kansas remains fully illegal, and Iowa and Nebraska have restrictive programs). Missouri's low 6% excise tax rate is among the most competitive in the nation, helping the legal market undercut illicit sources.

Major MSOs including Curaleaf, Green Thumb Industries, Trulieve, Cresco Labs, and Verano have built significant Missouri operations. Amendment 3 also includes provisions for automatic expungement of prior cannabis convictions and microbusiness licenses aimed at promoting equity and small business participation. Missouri is widely regarded as a top-ten US cannabis market by revenue.

Kansas is one of the shrinking number of states where cannabis remains fully illegal for both medical and recreational purposes. The state has no medical cannabis program, no low-THC or CBD-only exception beyond federally legal hemp products, and possession of marijuana remains a criminal offense. First-time possession of any amount is a class B misdemeanor carrying up to 6 months in jail and a $1,000 fine.

There have been legislative efforts to change Kansas's cannabis laws. In 2021, a medical cannabis bill (SB 158) passed the Kansas Senate with bipartisan support but stalled in the House, where conservative leadership prevented it from reaching a floor vote. Governor Laura Kelly has publicly expressed support for medical cannabis legalization, but the Republican-controlled legislature has been the primary obstacle. Similar bills have been introduced in subsequent sessions but have faced similar fates.

Kansas's position as a holdout state is increasingly conspicuous as its neighbors advance cannabis reform. Missouri approved recreational cannabis in 2022, Colorado has had legal recreational cannabis since 2012, and Oklahoma has one of the largest medical cannabis markets in the nation. This geographic reality drives cannabis spending by Kansas residents across state lines, representing lost tax revenue and economic activity. Despite polling showing majority support for medical legalization among Kansas voters, legislative action remains uncertain. There is no legal cannabis market in Kansas, and no MSOs have any operations in the state.