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Gaming Edge’s TL;DR
- Kentucky’s new 14.25% tax on prediction market transaction fees is already in court.
- A coalition – including Kalshi, Crypto.com, and Polymarket – says the state crossed into federally regulated territory, while Kentucky says it will defend the law.
Kalshi, Crypto.com, and Polymarket came together to file suit against Kentucky on June 12, challenging a new 14.25% tax on prediction market operator transaction fees.
Kentucky became the first state to specifically tax prediction markets after enacting the measure in April as part of House Bill 904.
The companies argue the law is discriminatory, unconstitutional, and pre-empted by federal commodities law. Their position is that prediction markets are federally regulated derivative exchanges overseen by the Commodity Futures Trading Commission, not gambling operators.
Kentucky AG responds
The lawsuit frames Kentucky’s move as unusually targeted, stating:
“No State currently levies a state-specific excise tax of any kind on derivatives transactions that take place on a federally designated exchange, let alone the sort of specifically targeted and discriminatory tax that Kentucky has imposed here.”
Kentucky Attorney General Russell Coleman pushed back quickly:
“You can bet our office will defend these statutes and the people of our commonwealth from out-of-state companies that seek to cancel Kentucky’s sports betting laws.”
Other states keeping watch
For bettors, there is no immediate change laid out here to Kentucky’s legal sports betting market, which has been fully regulated since 2023. But the dispute matters because it sits right on the blurry line between gambling regulation and federal market oversight.
For operators, the stakes are clearer. If Kentucky’s tax stands, it could give other states a roadmap to impose similar taxes or rules on prediction market platforms.
If the coalition wins, that could strengthen the argument that these companies fall primarily under federal oversight through the CFTC rather than state-by-state gambling-style regulation.
That makes this case important well beyond one tax rate. It raises a bigger question: Are prediction markets something states can treat like a local wagering product, or are they federally supervised derivatives exchanges that sit outside that framework?
For companies operating in the space, that answer could shape future compliance costs, expansion plans and legal risk across the US.
Based on reporting by Mark Keast for Casino.org.
