Kalshi Sues Illinois Over New Tax on Sports-Related Prediction Markets
Kalshi has filed a lawsuit against the state of Illinois in response to a recently enacted tax on sports-related prediction markets. The lawsuit, stemming from a new 15% tax scheduled to take effect on July 1, highlights ongoing tensions between states and federal regulators regarding the classification of such markets as gambling, as reported by Decrypt.
Kalshi has initiated legal action against the state of Illinois over a new tax set to impose a 15% levy on revenues derived from sports-related prediction market wagers. This tax, which is scheduled to go into effect on July 1, 2026, is part of a broader regulatory framework following the signing of a new law by Illinois Governor JB Pritzker. The law not only establishes this tax but also creates a "Sports Wagering Fund."
In its lawsuit, Kalshi argues that Illinois lacks the authority to tax its income from these prediction markets, contending that such revenues should not be classified as gambling-related and therefore fall outside state jurisdiction. The petition filed in federal court highlights a significant concern for the company: starting on July 1, 2026, Kalshi faces potential criminal penalties in Illinois if it continues to offer sports event contracts that are deemed lawful under federal regulation but now subject to state tax. Kalshi’s complaint states, "On July 1, 2026… Kalshi will be subject to criminal penalties in Illinois unless it either ceases to offer Illinois residents sports event contracts that are perfectly lawful in the eyes of Kalshi’s exclusive federal regulator or pays Illinois millions of dollars and submits to the state’s regulatory regime."
This legal conflict follows the Trump administration's ongoing opposition to state-level regulations regarding prediction markets. The Commodity Futures Trading Commission (CFTC), which operates under the federal government, has also amended an existing lawsuit against Illinois to contest the enforcement of this new tax. Furthermore, the CFTC seeks a preliminary injunction to halt the implementation of Illinois' laws.
The suit represents a continuation of a larger nationwide battle over the regulatory classification of prediction markets. As various states grapple with how to regulate platforms like Kalshi and its competitor Polymarket, the Trump administration has defended these markets, asserting that they should not be considered gambling. This conflict underscores the complexities and evolving landscape of regulations governing financial markets, particularly as they intersect with innovative platforms for prediction trading.
Summary based on original reporting by Sander Lutz at Decrypt, originally published Jun 24, 2026. SolanaWire does not republish source content.
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