Illinois lawmakers are moving to regulate, and heavily tax, prediction markets. Prediction markets are a fast-growing corner of online wagering that has largely operated outside traditional gaming frameworks.
Senate Bill 4168, introduced by State Sen. Michael Hastings on March 5, 2026, would create a new Prediction Markets Regulation and Taxation Act, requiring any platform offering prediction contracts to Illinois users to obtain a license from the Illinois Gaming Board and pay a $1 million upfront fee and $1 million annual renewal.
The bill is currently pending in Assignments and State Sen. Cristina Castro has been added as a co-sponsor.
More significantly, the bill imposes a 50% tax on adjusted gross receipts from Illinois-based activity. That rate would place prediction markets among the most heavily taxed forms of gambling in the state.
What Are “Prediction Markets”?
The bill targets platforms where users trade contracts based on future events—politics, economic data, weather, and similar outcomes. Sports-related contracts are explicitly excluded and remain governed by Illinois’ existing sports wagering laws.
In practice, this is aimed at platforms like Kalshi and similar exchanges that have argued they are not “sportsbooks” or traditional gambling operators, often positioning themselves as commodities or derivatives markets.
Why Illinois is Acting Now
The legislative findings acknowledge that prediction markets can serve legitimate forecasting functions—but also treat them as a form of gambling when offered to the public.
The more immediate driver is structural: prediction markets may currently fall outside Illinois’ sports wagering tax regime, which imposes graduated tax rates (and, more recently, per-wager fees) on licensed sportsbooks. Because some platforms operate under federal commodities regulation or otherwise avoid classification as “sports wagering,” they may not be subject to those taxes at all.
The bill looks to close this gap by both 1) forcing licensure under the Illinois Gaming Board; and 2) imposing a standalone tax regime at a flat 50% rate.
The bill also makes clear that operating without a license would constitute criminal gambling under Illinois law, exposing operators to cease-and-desist orders, civil penalties, and potential prosecution.
A Separate Lane For Sports Betting
Notably, the proposal keeps prediction markets in a parallel—but separate—regulatory structure. It explicitly avoids importing the sports wagering framework (including per-bet fees and tiered rates), even while imposing a higher headline tax.
That suggests the General Assembly is trying to do two things at once, that is, both: 1) capture revenue from an emerging market, and also 2) prevent regulatory arbitrage that could undercut licensed sportsbooks and casinos.
What’s Next?
This proposal fits a familiar Illinois pattern: identify an emerging revenue source, then fold it into the state’s gaming and tax apparatus.
Whether SB 4168 moves on its own is an open question. More likely, pieces of it, particularly the tax and licensing structure, could be incorporated into a broader omnibus budget or gaming bill later in the session.
For operators, the risk is obvious: a model built on regulatory arbitrage may not survive contact with Illinois’ licensing and tax regime. For existing gaming licensees, the bill signals that the state is paying close attention to competitive overlap and willing to act quickly to close perceived gaps.