The Revenue Surprise

Before Amendment 3 passed in November 2022, the Missouri State Auditor projected that cannabis would generate $40.8 million per year in tax revenue. That estimate was off by a staggering margin.

Missouri collected $255.57 million in cannabis tax revenue in 2025 — more than six times the original projection. Cumulative tax revenue since the medical program launched in October 2020 has surpassed $750 million. Total cannabis sales have exceeded $5 billion.

This was not a slow build. Missouri's market exploded from day one — the 87-day rollout produced $72 million in first-month sales, and the trajectory has continued upward.

Tax Structure

Missouri's cannabis tax structure was intentionally designed to be among the lowest in the nation, keeping legal prices competitive with the illicit market and attracting consumers from higher-tax neighboring states like Illinois:

Sales & Revenue by Year

Why Missouri's Tax Rate Matters

Missouri's 6% excise tax is a constitutional provision — the legislature cannot raise it without voter approval. This gives businesses and consumers long-term certainty that other states lack. Here is how Missouri compares:

This differential drives significant cross-border tourism, particularly from Illinois. When Missouri launched recreational sales, its first full month ($72M) nearly doubled Illinois's sales ($39M) — a direct result of the tax advantage.

Where Revenue Goes

Amendment 3 constitutionally mandates how cannabis excise tax revenue is distributed:

Additionally, municipalities that approved the optional up to 3% local tax receive that revenue directly for local use.

The Unspent Funds Problem

Despite the massive revenue generation, a significant portion of earmarked funds has not been spent. As of FY2025, approximately $95 million in cannabis tax revenue designated for veterans, drug treatment, and public defenders sat unspent in state accounts. This has drawn criticism from advocates and legislators who argue the money should reach intended beneficiaries faster.

The spending lag is attributed to bureaucratic processes in establishing distribution mechanisms, the time required to scale up existing programs, and political dynamics around new program creation.

The Supreme Court Tax Ruling

The Missouri Supreme Court issued a significant ruling on local cannabis taxation. In a 6-1 decision, the court held that cities and counties cannot "stack" taxes on cannabis beyond what Amendment 3 authorizes. Some jurisdictions had attempted to layer additional local taxes on top of the constitutional 3% cap. The court struck down these attempts, reinforcing that Amendment 3's tax structure is a constitutional ceiling, not a floor.

Official Sources

• Division of Cannabis Regulation
• Missouri State Auditor — original revenue projections
• Missouri Office of Administration — budget and revenue data

Missouri collected $255.57 million in cannabis tax revenue in 2025, exceeding the original State Auditor projection of $40.8 million per year by more than six times. Cumulative cannabis sales have surpassed $5 billion since the medical program launched in October 2020.

Missouri Division of Cannabis Regulation