Kalshi sues Missouri over state attempt to regulate prediction‑market betting
Prediction‑market platform Kalshi filed a lawsuit in federal court in Missouri on Wednesday, accusing the Missouri Gaming Commission and state officials of overstepping their authority. Kalshi says the Commodity Exchange Act gives the Commodity Futures Trading Commission exclusive jurisdiction over the contracts it offers.
Missouri Attorney General Catherine Hanaway sent a cease‑and‑desist letter last month demanding that Kalshi either stop serving Missouri residents, obtain a state gaming license, pay all applicable taxes and fees, and stop serving adults under 21. The letter set a compliance deadline of Oct. 16 and warned of legal action if Kalshi did not comply.
Kalshi’s federal jurisdiction argument
Kalshi argues that the Constitution’s supremacy clause gives the federal government the final say when state law conflicts with the CFTC’s authority. The company says the state’s demands would force it to violate the CFTC’s “impartial access” rule, which requires designated contract markets to treat all participants equally.
- 1Monitor court filings for a decision on the injunction
- 2Check for any new licensing or tax notices from the state
- 3Consult a lawyer if you receive a cease‑and‑desist
- 4Stay informed about Kalshi’s availability in Missouri
Source: Courthouse News Service
Missouri’s stance on prediction markets
Missouri officials contend that Kalshi’s event contracts are bets, not swaps, and therefore fall under the state’s gambling statutes. They point to voter‑approved licensing and taxation rules for sports betting, arguing that the same rules should apply to prediction‑market platforms.
What this means for everyday users
Missouri residents who use Kalshi could lose access to the platform if the state’s requirements are enforced. The lawsuit seeks an injunction to stop Missouri from imposing the licensing, tax and age‑restriction conditions. No court decision date is provided, but the Oct. 16 deadline has already passed.
When to consider legal help
If you receive a similar cease‑and‑desist notice or are unsure how state gambling rules affect your use of prediction‑market services, consulting an attorney experienced in gambling and federal securities law can help you understand your rights and obligations.
What this means: our conclusions
- What to watchPotential shift in regulatory authority
If Kalshi wins, federal jurisdiction could limit state attempts to tax or license prediction‑market platforms, affecting gambling regulation nationwide.
- RiskMissouri may retain control over betting
A ruling favoring the state would reinforce state power to treat prediction markets as illegal gambling, leading to licensing fees and restrictions for users.
- What to doImpact on Missouri users
Missouri residents could lose access to Kalshi’s services or face new fees unless the injunction blocks the state’s enforcement.
- What to watchSignal for other states
The lawsuit may prompt other states to reevaluate their approach to prediction markets, either pursuing similar actions or waiting for federal clarification.
- ContextLegal clarity needed for platforms
A definitive ruling could give online prediction‑market operators clearer guidance on whether to comply with state gambling laws or rely on federal preemption.
| Party | Position |
|---|---|
| Kalshi | Claims CFTC exclusive jurisdiction over event contracts |
| Missouri Gaming Commission & AG | Treats contracts as illegal sports bets subject to state law |
Source: Courthouse News Service
This article is general information based on Courthouse News Service and court or agency records available at publication time. It is not legal advice; laws and deadlines differ by state and by case. Published October 29, 2026.
Source: Courthouse News Service
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Lawyers in nearby states
No attorneys in Missouri are listed in our directory yet. Lawyers are licensed state by state, so before hiring, check that the attorney is admitted to practice in Missouri.