Kalshi Sues Missouri Over Sports Prediction Market Rules

Jonathan Rodriguez

Written by: Jonathan Rodriguez

Published: Thu Oct 29, 2026, 7:00 am ET

Read Time: 4 minutes

Kalshi Sues Missouri Over Sports Prediction Market Rules

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Kalshi has sued Missouri officials over an order demanding that the prediction market stop offering sports event contracts or obtain a state gaming license. 

Filed in the U.S. District Court for the Eastern District of Missouri, the lawsuit challenges the state's authority to regulate Kalshi's federally regulated exchange.

The case centers on whether federal commodities law protects Kalshi's operations from state gambling restrictions. Meanwhile, Missouri officials argue that sports event contracts should face the same rules as conventional wagers offered through licensed sportsbooks.

The dispute escalated shortly after Missouri launched its regulated sports betting market, adding urgency to the state's efforts to enforce its licensing requirements.

Missouri Targets Kalshi Over Sports Betting Rules

Missouri Attorney General Catherine Hanaway's office issued cease-and-desist notices to six prediction market operators, including Kalshi. Officials contend that contracts tied to sporting events constitute sports wagering and must comply with state licensing requirements.

Missouri voters approved Amendment 2 in 2024, paving the way for regulated sports betting. The market launched on December 1, 2025, establishing the state's sports wagering framework shortly before regulators intensified their scrutiny of prediction market operators.

Consequently, the dispute has become a test of how Missouri gambling laws apply to prediction markets. The state maintains that operators cannot avoid licensing and taxation simply by offering sports-related contracts through an exchange.

An attorney general spokesperson defended the enforcement position, arguing that customers should face consistent rules regardless of where they place their wagers.

"If you are going to bet on the Chiefs beating the Broncos, the rules should be the same regardless of whether the bet is placed through an online prediction market or at the casino," the spokesperson said. "In both situations, it's sports betting – and Missourians voted to subject sports betting to licensing and taxation rules."

The spokesperson added: "Attorney General Hanaway will enforce the law, and we are confident the federal courts will not prevent her from doing so."

Kalshi Challenges Missouri's Licensing Requirements

Kalshi argues that Missouri's enforcement effort conflicts with the federal regulatory framework governing its exchange. The company relies on the Commodity Exchange Act (CEA) and the Commodity Futures Trading Commission's authority over designated contract markets.

In its lawsuit, Kalshi contends that the state's order effectively forces it to abandon its Missouri operations or accept restrictions that conflict with federal law.

"Missouri's attempt to prohibit Kalshi from operating is a form of regulation that intrudes on the federal scheme. The letter gives Kalshi only two options: cease and desist, or obtain a Missouri Gaming Commission license, pay all associated state taxes and fees, and stop serving Missourians under 21 years of age," counsel wrote in its lawsuit.

The company also argues that obtaining a license would not resolve the underlying conflict. According to Kalshi, Missouri's requirements could undermine its status as a federally designated exchange.

"Even if Kalshi could obtain a license, which it cannot under Missouri's own regime, it could not operate within that regime without jeopardizing its federal designation. Missouri law requires licensed operators to comply with a host of state-specific restrictions that cannot be reconciled with the CEA," counsel wrote in the lawsuit.

These statements represent Kalshi's legal position, rather than a court ruling on the scope of federal authority.

Novig and Crypto.com Also Challenge Missouri

Kalshi's filing is the latest and most high-profile action in a growing series of legal challenges against Missouri's regulatory push. Platforms such as Novig and Crypto.com have also filed lawsuits against the state. Both platforms contest the application of Missouri gambling laws to their prediction market operations.

These cases reflect a broader disagreement over whether sports event contracts should fall under federal derivatives regulation or conventional state sports betting laws. Prediction market operators argue that federal oversight limits states' authority to restrict their exchange-listed contracts.

Missouri, however, maintains that sports-related contracts function as wagers and should comply with state licensing and taxation requirements. The competing lawsuits could help determine how far state regulators can extend their authority over federally regulated platforms.

The dispute also has implications for US online sportsbooks, which operate under state licensing frameworks and associated compliance obligations. A different regulatory approach for prediction markets could create competing standards for products that regulators consider similar.

What Happens Next?

Kalshi is seeking court intervention to prevent Missouri officials from enforcing the challenged restrictions. The dispute has gained urgency as the state's extended compliance deadline approaches.

The court must consider the competing arguments over federal derivatives oversight and state gambling authority. However, filing the lawsuit does not itself establish that Missouri cannot enforce its laws against Kalshi.

Ultimately, the outcome could shape the relationship between prediction market exchanges and state regulators. It may also influence how Missouri and other states approach sports event contracts offered through federally regulated platforms.

Jonathan Rodriguez
Jonathan Rodriguez

Jonathan is an avid basketball fan, and is often looking forward to the next upcoming NBA season when not checking players' stats during games. He also likes to keep his ears on the ground for the latest rumblings in the online casino industry.

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