Illinois Sports Betting Surges in March 2026

Jonathan Rodriguez

Written by: Jonathan Rodriguez

Published: Fri May 22, 2026, 11:00 am ET

Read Time: 3 minutes

Illinois Sports Betting Surges in March 2026

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Illinois sports betting delivered a sharp contrast in March 2026, as revenue surged even while betting volume collapsed. 

According to the Illinois Gaming Board (IGB) report, US online sportsbooks in the state posted significantly higher profits despite a steep drop in total wagers compared to March 2025. The results highlight a market increasingly shaped by pricing pressure, tax policy, and high-margin tournament outcomes.

Illinois Sports Betting Rebound as Bets Decline Under New Tax Structure

Illinois online sportsbooks rebounded strongly in March 2026, generating about $129.2 million in adjusted gross revenue. However, that strength came alongside a dramatic fall in activity, as the state processed roughly 10 million fewer bets than the same period last year.

The primary reason for the decline was Illinois' newly implemented per-wager tax, introduced in late 2025. Operators now pay between 25 and 50 cents per bet, which fundamentally changed pricing behavior in the market. In response, sportsbooks passed costs to customers through betting surcharges and higher minimum wager requirements.

As a result, casual bettors pulled back sharply. Many smaller wagers became uneconomical, which directly contributed to the steep decline in volume across Illinois gambling platforms. The contraction was not accidental; it reflected a structural shift in how every bet is priced and consumed.

Despite fewer bets, US online sportsbooks still generated stronger profits because remaining wagers skewed larger and more strategically. The market effectively filtered out low-value betting activity while retaining higher-stakes action.

March Madness amplified these dynamics. Illinois sportsbooks benefited from a chaotic NCAA Tournament filled with upsets and bracket volatility. With few No. 1 seeds reaching the Final Four, the public lost heavily across key matchups, driving a state-wide hold rate of approximately 9.3%. That elevated hold level became the core engine of March profitability.

Hold Rates and March Madness Chaos Fuel Sportsbook Windfall

The surge in revenue was driven primarily by an unusually strong hold percentage rather than rising demand. March Madness created ideal conditions for sportsbooks, as unexpected outcomes consistently broke public betting patterns. In industry terms, "efficiency" meant bettors lost at a higher rate than usual.

This volatility allowed operators to maximize returns across tournament markets. Parlays, futures, and upset-heavy brackets all contributed to inflated sportsbook margins during the month. The result was a performance driven less by scale and more by favorable outcomes.

Illinois Tax Pressure Sparks High-Profile Retail Closure

The impact of Illinois' tax structure extended beyond digital betting. DraftKings announced it will close its retail sportsbook at Wrigley Field on May 31, 2026. The company directly cited the state's per-wager tax and rising operational costs as key reasons the venue became unsustainable.

The closure underscores growing tension between Illinois regulators and operators. Retail sportsbooks, in particular, face higher fixed costs that are harder to offset under per-bet taxation models. 

This development adds weight to broader concerns about long-term sustainability in Illinois gambling.

FanDuel Outperforms DraftKings in Revenue Despite Lower Handle

The competitive landscape also shifted during March 2026, showcasing how profitability now depends more on hold efficiency than raw volume leadership:

  • DraftKings: Led the state in total handle with $481.4 million in wagers, translating to $43.6 million in revenue on a 9% hold.
  • FanDuel: Won the month in revenue, generating $43.8 million from a lower $380.5 million handle, thanks to a powerhouse 11.5% hold rate.

Illinois' March 2026 results show a market in transition. Volume is shrinking under tax pressure, but volatility and pricing power are driving record profitability for operators able to adapt.

Jonathan Rodriguez
Jonathan Rodriguez

Jonathan is an avid basketball fan, and is often looking forward to the next upcoming NBA season when not checking players' stats during games. He also likes to keep his ears on the ground for the latest rumblings in the online casino industry.

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