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Illinois lawmakers are reviewing a proposed shift in sports betting taxation as concerns grow over declining wagering activity and market competitiveness.
Good to Know
House Bill 5143, introduced by Representative Daniel Didech, seeks to amend the Sports Wagering Act and remove the tiered charge applied to every online bet. Proposal arrives after months of industry data pointing to reduced participation and structural pressure on operators.
Illinois took an unusual route in 2025 by layering a transaction based fee on top of taxes tied to Adjusted Gross Revenue. Structure applies a $0.25 charge for each wager up to 20 million bets annually, then increases to $0.50 for every wager beyond that level.
Design aimed to generate an estimated $36 million to $40 million in additional state revenue. Early market behavior has suggested unintended side effects.
Unlike traditional sportsbook taxation models used across the United States, approach penalizes volume directly rather than profitability, creating friction for both operators and bettors.
Illinois Gaming Board figures show measurable contraction soon after implementation.
Between September and December 2025, sportsbooks recorded 27.6 million fewer wagers compared with the same months in 2024. December alone produced a 25.1 percent year over year drop in total bets.
Operators responded by adjusting pricing structures to absorb costs, which pushed average wager size from $39 to more than $50. Casual participation appeared to fall as minimum bets increased.
Sportsbooks already operate under a graduated AGR tax ranging from 20 percent to 40 percent. Chicago adds a 10.25 percent local wagering tax, further tightening margins.
Industry stakeholders, including the Sports Betting Alliance, argue that combined obligations create one of the most expensive regulated environments in the United States. Higher costs can filter down to customers through pricing changes, potentially encouraging migration to offshore platforms that lack consumer protections.
HB5143 attempts to reset competitive balance by removing the per bet layer while leaving existing revenue taxes intact.
Supporters of the original framework viewed the tax as a funding mechanism for education programs and regulatory oversight. Representative Didech now argues that healthier betting volume could generate stronger long term returns through existing AGR taxation rather than transactional fees.
Legislation was filed on February 5, 2026 and currently sits in the introductory stage. Debate will likely center on whether short term fiscal reductions can translate into sustainable growth for the regulated sports betting market.