When Illinois lawmakers tucked a per-wager excise tax into last year's budget, most bettors barely noticed. A year later, the ripple effects are reshaping how states think about taxing legal sports betting - and how sportsbooks pass those costs on to customers.
How Illinois changed the playbook
Illinois already had one of the country's steepest sports betting tax structures: a progressive rate on adjusted gross sports wagering receipts running from 20% at the low end up to 40% for the state's highest-earning operators. Then, in a last-minute budget amendment, the state added something no other state had tried - a flat tax on every individual online wager placed, regardless of whether that bet wins or loses. The rate is 25 cents per bet for a sportsbook's first 20 million wagers taken in a fiscal year, then 50 cents on every wager after that.
Only two operators clear that 20-million-wager threshold: FanDuel and DraftKings, which together handle roughly three-quarters of Illinois's sports betting market. FanDuel responded by tacking a 50-cent surcharge directly onto every wager placed by an Illinois customer, framed explicitly as a pass-through of the new state tax rather than a permanent price increase. DraftKings signaled it would follow with its own adjustment. Industry analysts estimated the combined hit to the two companies' 2026 earnings at well over $100 million before any surcharge revenue was factored back in.
Why other states are watching closely
Illinois's move matters beyond its own borders because it demonstrated something state legislatures had been unsure about: that a sportsbook tax increase, even a fairly aggressive one, doesn't necessarily push operators out of a market - it gets passed to bettors instead, with relatively little pushback. That's a politically convenient outcome for lawmakers looking to close budget gaps without directly raising taxes on constituents.
Since Illinois's excise tax took effect, several other states have moved on their own sportsbook tax structures, though none has yet copied the per-wager mechanism exactly:
| State | Change | Status |
|---|---|---|
| Louisiana | Online sports betting tax raised from 15% to 21.5% of gross gaming revenue | In effect |
| Maryland | Online tax rate raised roughly 5 points, to 20% | In effect |
| Colorado | Sunsetting the deduction sportsbooks could take for free-bet promotions, phased down through 2026 | Phasing out |
| West Virginia | Proposal to raise the sports betting tax rate from 10% to 25% | Pending |
| Ohio | A blanket tax increase proposal debated after an earlier 20% hike failed to pass | Debated |
None of this is happening in a vacuum. Sports betting tax revenue nationally has grown sharply as more states have gone live and betting volume has climbed - U.S. Census data shows state tax collections tied to sports betting rose several hundred percent over roughly four years. For a handful of states, sports betting now makes up a meaningful, trackable slice of total state tax revenue, which raises the political stakes every time a legislature debates the rate.
What it means for bettors
The practical effect for a bettor in a state that raises its tax rate is usually indirect but real: worse odds, smaller promotional offers, or - as in Illinois - a direct line-item surcharge on every bet placed. Sportsbooks operate on thin margins per bet already, since the vig on standard markets is only a few percentage points; a meaningful tax increase, especially one applied per-transaction rather than on net revenue, has to come from somewhere.
A 50-cent surcharge sounds trivial on a single bet, but for a bettor placing dozens of wagers a month, it functions almost like a membership fee layered on top of the standard vig already built into the odds.
For now, Illinois remains the only state with a true per-bet excise tax. Whether other states adopt the same structure, rather than simply raising their percentage-of-revenue rate, will likely depend on how much additional revenue Illinois's model actually generates once a full fiscal year of collections is in the books - and how loudly bettors and operators push back if the surcharge becomes permanent rather than a one-state experiment.
Frequently Asked Questions
It is an extra cost tied to each bet rather than only a tax on sportsbook revenue, and operators may respond by adding fees or changing pricing.
Usually to increase public revenue, especially after the market is established and lawmakers believe operators can absorb more cost.
Compare books, read promo terms carefully, and pay attention to any new fees or less favorable odds.