A federal judge has handed Kalshi and Coinbase a partial victory in the fight over who regulates sports event contracts. On October 2, 2026, US District Judge Martha M. Pacold granted a partial preliminary injunction in Illinois, siding with the two companies and the Commodity Futures Trading Commission (CFTC) against state officials.

The ruling comes with limits. Judge Pacold found that Illinois licensing requirements likely conflict with federal derivatives law, but she left the state's transaction fee rules unresolved and ordered the parties to return with proposed injunction terms.

What the court decided

At the center of the case is preemption — the legal doctrine under which federal law overrides state law when the two collide. Judge Pacold concluded that certain Illinois licensing requirements, including provisions under 230 ILCS 45 — the state's Sports Wagering Act — likely conflict with the federal Commodity Exchange Act. The CEA governs swaps and other derivatives — agreements whose value is tied to an underlying asset or event — and places them under the jurisdiction of the CFTC.

The plaintiffs' argument hinges on classification. If Kalshi's sports event contracts count as swaps under the CEA, they fall under exclusive federal rather than state gambling law. The court found that line of reasoning likely to prevail, at least at this preliminary stage.

A preliminary injunction is not a final judgment. It reflects the court's view that the plaintiffs are likely to succeed, which favors them for now but does not decide the case. The fee question followed a different path: the court did not settle whether Illinois may apply its transaction fee rules to these contracts and requested further briefing on the issue.

The parties now face a concrete task. They must propose the specific terms of the injunction, which will determine how far the state's authority is actually restrained in practice.

How Kalshi and Coinbase got here

Kalshi is no stranger to federal oversight. The company has been a CFTC-registered designated contract market (DCM) since November 2020 — an exchange status that allows it to list contracts for trading under federal derivatives rules — and began offering trading on sports event contracts in January 2025. The products let users take positions on the outcomes of games — arrangements that look like sports betting to state regulators and like derivatives trading to Kalshi.

Coinbase entered the picture in December 2025, when it announced a partnership with Kalshi to give its users access to those contracts, a step that connected a major crypto exchange's user base to event-contract trading.

The CFTC's presence as a co-plaintiff is notable. The federal regulator's decision to argue alongside the companies signals that the agency views the contracts as squarely within its territory.

Illinois is one front in a much wider conflict. Similar challenges have played out across multiple states, and courts have issued conflicting opinions on whether sports-related contracts belong to federal derivatives regulators or state gambling authorities — leaving the same core question open to different answers depending on the jurisdiction.

What this means for prediction markets and crypto platforms

For prediction markets — platforms where users trade on the outcomes of future events — the unresolved fee issue deserves attention. Transaction fees directly affect platform economics, and a state that loses on licensing but retains some fee authority could still shape whether operating there is profitable. The forthcoming briefing on the question is likely to draw close scrutiny.

The scope of the injunction matters as well. A narrowly drafted order could leave Illinois room to maneuver, while a broad one would more fully clear the way for Kalshi and Coinbase customers in the state.

Source: CryptoBriefing