Illinois Raised Sports Betting Taxes and Lost 27.6 Million Wagers. Now It Wants 50% on Table Games.

Illinois already has hard proof that overtaxing gambling backfires. After introducing America’s first per-wager sports betting tax in July 2025, the state lost 27.6 million wagers in four months, watched December betting volume plunge 25.1% year-over-year, and became one of the only major regulated markets in the country to post a sustained decline while the national industry grew. A bipartisan bill to repeal that tax now has 27 co-sponsors. And yet, in the same legislative session, Gov. JB Pritzker’s $57 billion FY2027 budget proposes raising casino table game taxes from a flat 15–20% to a graduated scale topping out at 50% — projecting $120 million in new annual revenue for the state’s Education Assistance Fund. The state is proposing to raise one gambling tax while simultaneously trying to undo the damage from the last one. Here’s what the data actually shows — and what comes next for Illinois gamblers, as part of the broader 2026 gambling tax changes reshaping the industry nationwide.

The Per-Wager Tax: Illinois Already Has the Data

On July 1, 2025, Illinois became the first state in the country to impose a per-wager tax on sports betting — $0.25 per bet on an operator’s first 20 million annual wagers, and $0.50 per bet after that. The state projected $40 million in annual revenue. Operators responded by passing the cost directly to consumers: FanDuel and DraftKings both added $0.50 surcharges to every Illinois bet, and minimum bet thresholds climbed. The average bet size jumped from $39 to over $50 — a 28% increase — as recreational bettors with smaller wagers were effectively priced out.

The volume collapse was immediate. September 2025, the first full month of operator surcharges, saw 5 million fewer bets than September 2024 — a 15% decline. The bleeding continued: from September through December 2025, Illinois recorded 27.6 million fewer wagers than the same period in 2024. December was the worst month, with total betting volume down 25.1% year-over-year and Tier 1 pre-game wagers — the bread-and-butter single-game bets, not exotic parlay combinations — dropping nearly 40%.

Here’s the paradox that makes this a textbook Laffer Curve case: the per-wager tax actually collected $62.2 million in its first six months — 50% above the $40 million annual projection. Politicians could call it a success. But the underlying market was shrinking. The revenue boost came from taxing fewer, bigger bets (the remaining bettors were spending more per wager), while the customer base eroded. The wagering shortfall cost the state an estimated $6.9 million in tax revenue that would have been generated if betting volume had held. Illinois became one of the only major regulated sports betting markets in the country to post a sustained decline while the national market grew at a 7% annual pace.

“The wagers being down that sharply is a concern. No two ways about it. When the anomalies happen, alarm bells go off because revenue will plummet and tax revenue drops with it.”
— Chris Altruda, Senior Analyst, Third Planet Media

The Proposed Table Game Tax: From 20% to 50%

Pritzker’s FY2027 budget would replace the current two-tier table game tax (15% on the first $25 million in adjusted gross revenue, 20% on everything above) with a seven-bracket graduated structure topping out at 50% on AGR above $200 million. This mirrors the graduated tax already applied to slot machine revenue. The logic is alignment: if slots are taxed at up to 50%, the administration argues, table games should be too. The projected revenue — $120 million annually — would be directed to the Education Assistance Fund. The proposal applies to 15 of Illinois’ 16 licensed casinos; Bally’s Chicago operates under a separate tax structure.

The impact is concentrated. Rivers Casino Des Plaines — a property that generates $107.4 million in annual table game AGR, representing nearly half of all statewide table game revenue — would see its effective tax rate jump from roughly 20% to 37.5% under the proposed brackets. That’s close to doubling the tax burden on the single most important table game operation in the state. Only two other properties would move above the current 20% ceiling. The remaining twelve would see marginal increases or stay within existing brackets. But the table game market in Illinois is a Rivers Casino story — and Rivers is the property that gets hit hardest.

Four Tax Layers: Why Illinois Stands Alone

What makes Illinois unique isn’t just the rate — it’s the stacking. No other state in the country combines all four gambling tax layers simultaneously: a graduated casino AGR tax (up to 50% on both slots and table games), a graduated sports betting AGR tax (20–40%), a per-wager tax ($0.25–$0.50 per bet), and a municipal tax layer (Chicago’s 10.25% on sports betting, effective January 1, 2026). Each layer individually might be defensible. Stacked together, they create a combined burden that no other regulated market imposes.

The comparison is stark. A casino generating $100 million in table game AGR pays $6.75 million in tax in Nevada. The same revenue in New Jersey costs $15 million. In Pennsylvania, $16 million. Under Illinois’ proposed structure, that same $100 million would cost over $32.5 million — a 4.8x differential compared to Nevada and a 2.2x differential compared to New Jersey. And that’s just the table game tax, before accounting for the sports betting, per-wager, and municipal layers that Illinois operators also face. For bettors trying to understand the math behind these rates, tools like an expected value calculator can help quantify how tax-driven cost increases erode returns over time.

The Legislative Contradiction

The Illinois General Assembly is currently managing a policy contradiction in real time. Rep. Daniel Didech, chair of the House Gaming Committee, filed HB5143 to repeal the per-wager tax effective July 1, 2026 — the same tax that drove 27.6 million wagers out of the legal market. The bill has 27 co-sponsors. Separately, Didech filed HB4171 to block municipalities from imposing their own sports betting taxes, a direct response to Chicago’s 10.25% levy that took effect January 1, 2026. Both bills represent the legislature acknowledging that the existing tax strategy has pushed too far.

And yet, in the same legislative session, the governor’s budget proposes a 50% ceiling on table game taxes — the same type of aggressive graduated structure that the per-wager tax demonstrated can shrink revenue by shrinking the market. The Sports Betting Alliance, representing FanDuel, DraftKings, and BetMGM, has warned that bettors are already “fleeing the legal betting market in favor of the cheaper, illegal market.” If the legislature agrees — as the 27 co-sponsors on HB5143 suggest — then the question is why the same logic wouldn’t apply to table games, where operators can shift floor space to slots, raise table minimums, cut comps, and reduce table game hours.

The Contagion: Other States Are Copying Illinois

Despite the documented damage, other states are treating Illinois’ per-wager tax as a template rather than a cautionary tale. Michigan Gov. Gretchen Whitmer’s FY2027 budget proposes an Illinois-style per-wager tax ($0.25 on the first 20 million bets, $0.50 thereafter), alongside an iGaming tax increase to 36% for top operators and the elimination of promotional “free play” deductions. The projected haul: $195.4 million annually, earmarked for Medicaid. Michigan would become the second state to adopt the per-wager model — despite having access to Illinois’ four months of decline data.

Arizona is moving in the same direction. Gov. Katie Hobbs proposed raising the sportsbook tax from 10% to 45% for operators with more than $75 million in monthly betting volume — a tier that would capture only FanDuel, DraftKings, BetMGM, and Fanatics. The pattern is clear: governors across the country are treating gambling operators as budget gap ATMs. When one state raises rates and collects short-term revenue — as Illinois did with its $62.2 million — others copy the model without waiting for the volume destruction data to arrive. Truist analyst Barry Jonas warned that “other states could look to copy Illinois,” and the evidence suggests they already are.

“[Bettors are] fleeing the legal betting market in favor of the cheaper, illegal market.”
— Sports Betting Alliance (representing FanDuel, DraftKings, BetMGM)

The Illegal Market Backdrop

The irony of aggressive gambling taxation is that it strengthens the very illegal market that legalization was supposed to eliminate. Illegal online gaming generates an estimated $400 billion annually worldwide. In the United States, unregulated offshore platforms captured 74% of the country’s $90.1 billion online gross gambling revenue in 2024 — over $67 billion flowing through operators with no licenses, no taxes, no consumer protections, and no age verification. States collectively lose an estimated $4 billion annually in tax revenue to offshore and unregulated gambling operations.

All 50 state and territorial attorneys general acknowledged the scale of this problem in August 2025, sending a bipartisan letter to U.S. Attorney General Pam Bondi requesting a coordinated federal crackdown on illegal online gaming — including website seizures, asset forfeitures, and financial transaction blocks. The AGs described the illegal market as “rapidly expanding” and linked it to money laundering, human trafficking, and organized crime. The connection to tax policy is direct: every surcharge, minimum bet increase, and tax-driven cost that pushes a bettor out of the legal market pushes them toward platforms that charge nothing — because they operate outside every regulatory framework.

What This Means for Illinois Bettors and Casino Players

For casino players, the operator response to a near-doubled tax rate is predictable because we’ve already seen the playbook on sports betting: costs get passed to consumers. If table games and slots are both taxed at up to 50%, there’s no tax incentive for casinos to maintain labor-intensive table game operations (which require dealers, pit bosses, and floor supervisors) over automated slot machines. Expect fewer table game offerings, higher table minimums, reduced comp programs, and a gradual shift of floor space from felt to screens — particularly at Rivers Des Plaines, where the impact is concentrated. The federal gambling loss deduction cap that took effect this year compounds the pressure, limiting what players can write off while the state takes a bigger share of the operator’s gross revenue.

For sports bettors already paying $0.50 surcharges on every wager, the path forward depends on two bills: HB5143 (per-wager repeal) and HB4171 (municipal tax block). If they pass, it signals the legislature has recognized the limit. If they don’t, Illinois’ triple-layered sports betting tax regime — graduated AGR up to 40%, per-wager at $0.25–$0.50, and Chicago’s 10.25% — remains the most expensive in the nation. Either way, the table game proposal is a budget document, not legislation yet. It must pass the General Assembly. Use our bankroll calculator to plan accordingly — and watch the legislative calendar. The state that proved overtaxing gambling shrinks the market is about to find out if it learned from the experiment.

Sources

• Illinois Gaming Board — Monthly Sports Wagering Reports — Wager count data, AGR figures, per-wager tax collections
• Governor’s Office of Management and Budget — FY2027 Budget Proposal — Proposed table game tax brackets, $120M revenue projection
• Illinois General Assembly — HB5143 — Per-wager tax repeal bill, 27 co-sponsors
• Illinois General Assembly — HB4171 — Municipal sports betting tax block bill
• National Association of Attorneys General — 50-state coalition letter to DOJ on illegal online gaming
• Tax Foundation — Sports Betting Tax Rates by State — State comparison data