CFTC Sues Kentucky Over State Prediction Market Lawsuits

The U.S. Commodity Futures Trading Commission (CFTC) has filed a federal lawsuit against the state of Kentucky, seeking to halt Kentucky’s efforts to block several prediction market platforms. The action comes after Kentucky sued major players in the prediction market space last week, arguing they operate without the required state gaming approvals.

According to the CFTC, the event contracts offered by platforms including Polymarket and Kalshi fall under the agency’s jurisdiction as federally regulated prediction markets. The regulator’s complaint also challenges a Kentucky law that imposes an excise tax on prediction market transaction fees, arguing the measure is effectively designed to make such platforms unable to operate in the state.

Key takeaways

• The CFTC filed suit in federal court to block Kentucky’s legal action against five prediction market-related defendants.
• Kentucky’s complaint targets Polymarket and Kalshi, as well as partners including Coinbase, Robinhood, and Webull, alleging “sports wagering” without proper licensure.
• The CFTC argues its authority is exclusive because the platforms’ event contracts are regulated as swaps and are linked to CFTC-designated contract markets.
• Kentucky’s 14.25% excise tax on prediction market transaction fees is part of the dispute, with the CFTC claiming it would make operation economically unviable.
• This is the ninth state case the CFTC has pursued since it began escalating enforcement around prediction market jurisdiction.

CFTC moves to preserve federal control over prediction markets

In its filing, the CFTC asked the court for declaratory and injunctive relief aimed at stopping Kentucky’s state-level case. The lawsuit identifies Kentucky Governor Andrew Beshear, Attorney General Russell Coleman, and the Kentucky Horse Racing and Gaming Corporation, among others.

CFTC Chair Mike Selig said the agency is “firmly committed to maintaining its exclusive jurisdiction over prediction markets,” calling Kentucky “the latest state attempting to shut down federally-regulated event contracts.” In the same statement, Selig framed the lawsuit as part of the CFTC’s broader effort to protect its federal authority over how these markets are regulated.

The CFTC said its enforcement push has intensified since Selig became chair in December. Kentucky’s case marks the ninth state action the CFTC has initiated over state measures targeting prediction markets.

Kentucky’s theory: event contracts are “sports wagering” under state law

Kentucky’s earlier lawsuit, filed last week, named Polymarket and Kalshi, along with Kalshi partners Coinbase, Robinhood, and Webull. Kentucky argued these entities are “doing business without a Kentucky gaming license or following state regulations,” and that their sports event contracts “fall squarely within the definition of ‘sports wagering’ under Kentucky law.”

The state also pointed to consumer-protection requirements. Kentucky alleged the platforms provide users “few or no resources” to identify or seek help for a gambling problem, as required under Kentucky law.

Sports betting falls under the jurisdiction of the Kentucky Horse Racing and Gaming Corporation, which has overseen the sector since 2023. Kentucky’s complaint effectively treats prediction markets offering sports-linked event contracts as a category of gambling that must comply with Kentucky’s licensing and regulatory framework.

How the CFTC reframes the same contracts as swaps and regulated derivatives

The CFTC’s lawsuit takes a different starting point: it argues that Polymarket and Kalshi operate within the CFTC’s regulatory universe. Specifically, the agency contends that the platforms are designated contract markets under its authority and that their event contracts are “swaps” under federal commodities law.

On the involvement of Coinbase, Robinhood, and Webull, the CFTC argues these firms are CFTC-registered futures commission merchants capable of offering event contracts in partnership with a designated contract market. This approach ties the platforms’ products to federal derivatives-style oversight rather than state gambling licensing requirements.

At the center of the broader legal clash is jurisdiction—whether states can enforce their gaming rules on prediction markets that, according to the CFTC, are already regulated at the federal level.

Excise tax dispute raises stakes for state enforcement

Kentucky’s efforts aren’t limited to licensure. The CFTC also challenged Kentucky’s recent law imposing a 14.25% excise tax on prediction market transaction fees. The regulator argued the tax is an attempt to make prediction markets economically unviable in Kentucky.

In the CFTC’s view, the tax structure functions as a practical barrier rather than a neutral fiscal policy—an argument that could become important if the court evaluates whether the state measure effectively undermines federally regulated market activity.

Just weeks earlier, the CFTC similarly sued New Mexico to block state actions aimed at applying state gaming laws to Kalshi, underscoring that the dispute is not confined to one state. The pattern suggests the agency intends to test—through litigation—whether state gaming enforcement can proceed when the CFTC believes federal commodities regulation already governs the same products.

Political backdrop and what to watch next

The Kentucky case lands amid a wider political conversation about prediction market jurisdiction. Earlier reporting in the same coverage noted that President Donald Trump gave the CFTC “moral support,” saying it was “critically important” that the regulator be the authority on prediction markets. The filing also references related public political ties, including that Trump Jr. has invested in and advises groups connected to Polymarket and Kalshi.

For market participants and users, the practical question now is procedural as well as substantive: whether federal court intervention will pause or narrow Kentucky’s enforcement timeline, and how the court evaluates the CFTC’s claim of exclusive federal jurisdiction. Readers should watch for developments on the scope of the injunction the CFTC is seeking, and for whether additional states facing similar disputes will move to accelerate or pause their own prediction market enforcement actions.