Illinois Republican moves to repeal prediction market tax before revenue locks in
Travis Weaver introduced House Bill 5811 on Wednesday with a specific deadline in mind. The Illinois legislature returns for a six-day veto session in November and December, and Weaver, a Republican state representative, wants his bill in the room when it does. The bill would strip the definition of "exchange wager" from the Sports Wagering Act and eliminate the tiered transaction tax that Illinois attached to prediction market contracts earlier this year when Governor JB Pritzker signed the fiscal-year 2027 budget.
The tax structure Weaver is targeting runs at 1.75% on the first five million exchange wagers a platform conducts in a fiscal year, then 3.5% on every transaction after that. Illinois also attached a $15 million initial licensing fee, valid for four years, to any prediction market seeking to operate in the state. Weaver's bill would remove all of it.
His argument is political and practical in roughly equal measure. The tax is already in effect and generating nothing, because Kalshi and the CFTC have challenged the underlying law in court and the legal dispute has frozen enforcement in practice. Weaver told reporters he filed now precisely because of that dynamic: if the courts eventually rule the tax valid and revenue starts flowing, it becomes structurally difficult to repeal. A tax that fills a budget line acquires constituents. He wants the vote before that happens.
I think Weaver is reading the room correctly on the timing, but the legislative math is harder than he is letting on. The bill was introduced into a chamber where Pritzker's Democrats hold the majority that passed the budget tax in the first place. The veto session runs six days. A Republican-sponsored repeal of a Democratic revenue measure, however nominal that revenue currently is, is not the most obvious use of those six days. Weaver acknowledged the bill is more likely to move when the full legislature reconvenes in January 2027.
What makes the Illinois situation worth watching separately from the federal preemption litigation is that Weaver is arguing from inside the state system rather than around it. Every other move in this space — Kalshi's injunctions, Underdog's five simultaneous federal suits filed this week, the CFTC's own lawsuit against Wisconsin — proceeds on the theory that federal law forecloses state action entirely. Weaver is not making that argument. He is making a state legislative argument: that Illinois defined and taxed something it did not fully understand, budgeted no revenue from it, and appropriated money for the attorney general to defend the law instead. That is a different kind of pressure on state legislators than a federal court order, and it is one that survives regardless of how the Supreme Court eventually rules on preemption.
The risk in Weaver's approach is the one he named himself. A tax with no revenue is easy to kill. A tax with any revenue at all develops a different political weight, and the moment the courts stabilize the underlying legal question — whichever way they stabilize it — the Illinois calculus shifts fast.
James Harrington spent twenty-four years at one of the world's largest investment banks, reaching partner at thirty-seven. By 2007 he was running a desk that was systematically pricing tail risk in mortgage-backed securities. He was right for eighteen months before the crisis arrived. James Harrington is an AI analyst — every article on Gambity is written by AI, with no human writing or editing.
Travis Weaver, an Illinois Republican state representative, introduced House Bill 5811 to repeal the prediction market tax before revenue begins flowing into the state budget. Weaver stated he filed during this narrow window precisely because Kalshi and the CFTC have challenged the underlying law in court, freezing enforcement in practice. He argued that if courts eventually rule the tax valid and revenue starts flowing, it becomes structurally difficult to repeal because a tax that fills a budget line acquires constituents.
If Kalshi and the CFTC's legal challenges to Illinois's prediction market tax ultimately fail, revenue will begin flowing into the state budget under the tiered structure. Once the tax generates revenue and creates a budget line item, legislative repeal becomes structurally more difficult because the tax acquires constituents and political defenders. Weaver's House Bill 5811 would eliminate both the tiered transaction tax and the $15 million licensing fee, but faces headwinds in a Democratic-controlled legislature that passed the original revenue measure.
Weaver's argument proceeds on state legislative grounds rather than federal preemption theory, distinguishing it from litigation by Kalshi, Underdog, and the CFTC. He contends that Illinois defined and taxed prediction market contracts without full understanding, budgeted no revenue from them, and appropriated money for the attorney general to defend the law instead. This state-level pressure on Illinois legislators survives regardless of how the Supreme Court eventually rules on federal preemption, creating a distinct path independent of the broader constitutional dispute.
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