Missouri Attorney General's Office
Missouri Attorney General cease-and-desist letter to Kalshi
3 pages
Dated
Cease-and-desist letter30 days to confirm
Cite this page
Bluebook
Missouri's Cease-and-Desist Letter to Kalshi (Sept. 16, 2026): Get a License or Stop, Prediction Market Laws (last updated Nov. 7, 2026), https://predictionmarketlaws.com/documents/mo-attorney-general-kalshi-cease-and-desist-2026.
APA
Prediction Market Laws. (2026, November 7). Missouri's Cease-and-Desist Letter to Kalshi (Sept. 16, 2026): Get a License or Stop. https://predictionmarketlaws.com/documents/mo-attorney-general-kalshi-cease-and-desist-2026
Missouri's Attorney General gave Kalshi a choice: stop offering sports wagering in Missouri, or get a license from the Missouri Gaming Commission, pay the state's sports-wagering taxes and fees, and stop taking wagers from anyone under 21. The letter asks Kalshi to confirm within 30 days which it has done, and says the state will take legal action if it does not.
What the letter says
- The choice. Cease and desist from sports wagering in Missouri, or obtain a Gaming Commission license, pay all associated taxes and fees, and stop serving Missouri residents under 21.
- The law cited. Article III, Section 39(g) of the Missouri Constitution, which legalized sports wagering, including its license fees and 10 percent tax on adjusted gross revenue, and the Gaming Commission's under-21 rules (11 CSR 45-20.360).
- The deadline. Confirmation of compliance or cessation within 30 days.
- The warning. The state will pursue enforcement and will not let Kalshi offer its platform in Missouri until the taxes and fees are paid.
What happened next
Kalshi sued the Attorney General and the Gaming Commission in federal court on Oct. 27, 2026 (E.D. Mo. No. 4:26-cv-01860). Novig's exchange and Crypto.com's exchange had sued Missouri on Oct. 16.
Where it fits in the case
Kalshi v. Missouri (E.D. Mo.)U.S. District Court for the Eastern District of Missouri, 4:26-cv-01860
- Kalshi files suit against the attorney general and Gaming Commission.
Read and cite it
Cite the letter
Letter from Catherine L. Hanaway, Att'y Gen. of Mo., to KalshiEx LLC (Sept. 16, 2026).
Cite this summary
Prediction Market Laws, Missouri Attorney General cease-and-desist letter to Kalshi (read Nov. 7, 2026), https://predictionmarketlaws.com/documents/mo-attorney-general-kalshi-cease-and-desist-2026.