Illinois sued over prediction market law imposing new taxes, regulations
[June 27, 2026]
By Sean Reed | The Center Square
(The Center Square) – A lawsuit against a new Illinois law taxing
prediction markets has been filed in federal court, presenting a
challenge state lawmakers expected before they passed the measure.
Kalshi, a company with a prediction-based platform that allows users to
place wagers on the outcome of real-life events, seeks to block the
state law from taking effect Wednesday.
The company argued the federal government’s Commodity Futures Trading
Commission is its sole regulator, which the CFTC also argued in a
lawsuit against the state this year.
Under the current administration, the CFTC has been working
collaboratively with companies to craft regulations fitting the services
they provide.
“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,” Kalshi’s legal representation said in the filing.
Users place bets on Kalshi by buying “event contracts,” which act as
shares in potential event outcomes. A correct prediction is paid out
based on the share of overall contracts a user purchases.
State officials have been critical of platforms like Kalshi because they
allow users to bet on sports, which the Illinois Gaming Board heavily
regulates and taxes.
The new measure – included in the state’s 2027 revenue package – imposes
the same requirements on prediction markets as are placed on other
sports betting platforms, such as Fanduel.
Requirements include a 1.75% tax on the first 5 million wagers placed on
a service each year – doubling to 3.5% on additional wagers – and for
platforms to pay a $15 million licensing fee, which must be renewed
every four years for $1 million.
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State Sen. Michael Hastings, who introduced a similar measure this
year, said in a hearing this April nearly 90% of all sports betting
is done on prediction markets, according to his findings.
“This enormous activity occurred entirely outside of the regulatory
framework, while our licensed operators must follow every rule,”
Hastings told the committee. “In my mind, that's lost revenue to the
state of Illinois.”
Gov. J.B. Pritzker’s office the state will fight for its law.
“Prediction companies are seeking to use the courts to avoid
complying with the same rules and consumer protections that apply to
other wagering operators in Illinois. The state of Illinois will
continue defending Illinois’ authority to regulate these activities
and protect consumers," said a spokesperson for the governor in a
statement.
Pritzker also signed an executive order earlier this year barring
state employees and officials from using betting markets, while also
responding to claims of insider trading through prediction market
bets in Washington.
The president’s son, Donald Trump Jr., serves as an advisor to
Kalshi and also serves on the board of Polymarket, another popular
prediction market.
Reporting from the Financial Times on Friday revealed Trump Jr. was
gifted a $300,000 stake in Kalshi in early 2025, which is expected
to balloon as the company raises more capital.
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