Kentucky’s new prediction markets tax is facing a legal challenge from a coalition that includes Kalshi, Crypto.com and Polymarket. The lawsuit seeks to block the state’s 14.25% excise tax on prediction market operators’ transaction fees.
The tax was approved by the Kentucky General Assembly in April and is the first state-level levy aimed directly at prediction markets. The case adds another legal challenge to the dispute over whether states can regulate or tax federally overseen event trading platforms.
Coalition challenges state authority
The lawsuit was filed by the Coalition for Fair Markets, which includes several prediction market operators. The group argues that Kentucky’s tax is unconstitutional, discriminatory and preempted by federal law. Federally regulated exchanges should not face a different tax treatment from other wagering products. The lawsuit also argues that Kentucky is trying to regulate prediction markets through taxation.
That position follows wider legal fights involving Kalshi and state gambling regulators. Prediction market contracts fall under federal commodities law, while sports and event contracts can also be treated by states as gambling-style products.
Tax applies to transaction fees
Kentucky’s tax applies to the transaction fees collected by prediction market operators. The rate is 14.25%, making it higher than the state’s 9.75% tax on wagers placed through licensed horse racing tracks.
That difference is one of the main points in the lawsuit. The coalition argues that Kentucky is placing a heavier tax burden on prediction markets than on some established gambling products. State officials will defend the measure as a valid revenue and oversight tool. Attorney General Russell Coleman has already signalled support for defending the tax in court.
States search for new tools
The Kentucky case shows how states are looking for different ways to respond to prediction markets. Some have issued cease-and-desist letters, while others have backed lawsuits or proposed bans.
Kentucky chose taxation rather than an outright prohibition. This separates the lawsuit from cases focused only on whether platforms can offer sports or event contracts in a state. The case could test whether states can impose targeted taxes on prediction market activity even when the platforms are registered under federal commodities rules.
Tax issue reaches beyond sports
The Kentucky tax is not limited only to sports contracts. It applies to transaction fees from prediction market activity, which can include markets tied to politics, economics, entertainment and other events. That makes the case important for the wider event trading sector. If the tax survives, other states may look at similar measures as prediction market platforms expand.
