Key Takeaway
Americans legally wagered over $150 billion on sports in 2024. Sportsbooks kept roughly $10.9 billion of it. Between 95% and 97% of bettors lose money over the course of a year. And 86% of young bettors believe they can reliably win. One of those numbers explains the other three.
Sports betting is now legal in 39 states plus Washington, D.C. and Puerto Rico. Thirty of those states allow online and mobile betting, which means you can place a wager from your couch during any NFL game, NBA playoff, or March Madness tournament with roughly the same effort it takes to order a pizza. Missouri became the newest state to launch on December 1, 2025. The holdouts (Alabama, Alaska, California, Georgia, Hawaii, Idaho, Minnesota, Oklahoma, South Carolina, Texas, and Utah) are shrinking, and the Tax Foundation estimates that full legalization across all 50 states would generate an additional $1.6 billion per year in state tax revenue.
None of this is the part nobody mentions.
The part nobody mentions is that the product being sold to you is entertainment with a negative expected return, marketed as a skill-based investment opportunity. The sportsbook apps, the celebrity endorsements, the "free bet" promotions, the same-game parlays: they're all designed to make you feel like you're one sharp pick away from profit. The math says otherwise, and the math always wins.
How the vig guarantees you lose
Every sportsbook charges a commission on bets called the "vig" or "juice." On a standard point spread bet, you wager $110 to win $100 (expressed as -110 odds). This means you need to win 52.38% of your bets just to break even. Not 50%. Not "slightly better than a coin flip." You need to be right on more than half your picks, consistently, over hundreds of bets, just to end up where you started.
For context: even the best professional sports bettors in the world rarely sustain a win rate much above 55% on spread bets over a full season. The margin between "consistently profitable" and "slowly going broke" is roughly three percentage points. The average recreational bettor hits somewhere around 47% to 50%, which means the vig grinds their bankroll down steadily over time, punctuated by occasional wins that feel like evidence of skill but are statistically indistinguishable from luck.
The industry knows this. Sportsbooks don't survive by hoping their customers lose; they survive because the mathematics guarantee it at scale. In 2023, Americans wagered about $119.84 billion on sports, and sportsbooks kept $10.9 billion in revenue. That's roughly a 9% hold rate across the industry: for every $100 bet, the house kept about $9. Some bettors win on any given day. Over a year, 95% to 97% of regular bettors are in the red.
Same-game parlays are the slot machines of sports betting
If the vig on a straight bet is a slow drain, parlays are a fire hose. Sportsbooks have aggressively promoted same-game parlays (combining multiple outcomes from a single game into one bet) because they're enormously profitable for the house. Parlay bets now account for 35% to 45% of mobile betting volume in some states.
The appeal is obvious: small wager, big potential payout. Bet $10 that a specific quarterback throws for 300+ yards, his team wins by 7+, and the over hits, and you might win $500. But the implied odds of hitting a three-leg parlay are significantly worse than the individual probabilities suggest, because the vig compounds with each leg. If each leg has a true 50% probability, a three-leg parlay has a 12.5% chance of hitting. The sportsbook prices it as if the probability is lower, pocketing the difference.
Parlays are, functionally, lottery tickets with a sports wrapper. They're fun, they create dramatic sweats during games, and they are the single fastest way to lose money in sports betting.
What the surveys actually show
NerdWallet's 2025 survey found that one in five Americans bet on sports in the previous year. The average sports bettor reported spending $3,284 on gambling annually (though the median was lower, at $750, suggesting a small number of heavy bettors pull the average up significantly). 65% said they bet to "make extra money." 31% viewed gambling as an investment.
The U.S. News 2025 Sports Betting Survey paints a more troubling picture. 30% of sports bettors say they have debts they attribute to gambling. Of those with gambling-related debt, more than half owe $500 or more. 24% have used credit card cash advances to place bets. 12% have taken out payday loans to fund wagers. One in four sports bettors worries they can't control their gambling. One-third have hidden sports betting debts from a loved one.
The Siena College Research Institute found that 86% of online sports bettors aged 18 to 34 believe they can reliably make money from sports betting. This is up from 82% in 2024. The actual percentage of bettors who profit over a full year is 3% to 5%. The gap between perception and reality is the most important statistic in the entire industry.
The tax change that made losing even more expensive
The One Big Beautiful Bill Act (OBBBA), signed in 2025, included a provision that limits gambling loss deductions. Previously, bettors could deduct 100% of their gambling losses against their winnings on federal taxes (up to the amount of winnings). The OBBBA imposed what's commonly called a "10% shaving," capping loss deductions at 90% of winnings.
This creates a "phantom income" tax problem. If you win $10,000 and lose $10,000 in a year (net zero), you can now only deduct $9,000 of those losses. You owe federal income tax on $1,000 of "income" that doesn't actually exist. For recreational bettors who roughly break even, this is an unexpected tax bill. For heavy bettors, the impact can be significant.
The bipartisan FULL HOUSE Act has been introduced in Congress to repeal this provision and restore the full deduction, but as of early 2026, it hasn't passed. Meanwhile, several states (including Connecticut) have introduced their own bills to create state-level deductions offsetting the federal cap.
Only 24% of sports bettors report their winnings as taxable income, according to NerdWallet. If you're betting through a licensed app, the sportsbook reports your winnings to the IRS via Form W-2G for payouts exceeding certain thresholds. The IRS knows. Act accordingly.
How to bet responsibly (if you're going to bet)
None of the above is an argument that sports betting should be illegal or that betting on a game is inherently irresponsible. It's entertainment. Plenty of people spend $50 on a UFC pay-per-view or $200 on concert tickets without expecting a financial return. Sports betting can be a fun way to add stakes to a game you're watching, as long as you treat the money the same way you'd treat money spent on any other form of entertainment: gone once spent.
Set a monthly budget and stick to it. NerdWallet's financial experts suggest allocating betting money from the "wants" category of a 50/30/20 budget. If your monthly entertainment budget is $300, decide in advance how much of that goes to betting. When it's gone, it's gone. Don't deposit more.
Never chase losses. The Siena College study found that "chasing losses" (increasing bet sizes after losing to try to get back to even) is one of the most common signs of problem gambling. Most online sports bettors have done it. It almost always makes the situation worse.
Stick to straight bets. Single-game point spreads and totals have the lowest vig and the most predictable long-term cost. Parlays, teasers, and same-game parlays all carry higher house edges. If you enjoy the occasional parlay for fun, treat it like buying a scratch-off: money spent for entertainment, not an investment.
Use the self-exclusion tools. Every regulated sportsbook offers deposit limits, loss limits, time limits, and self-exclusion options. These tools exist because they work. Setting a $100 weekly deposit limit before you start betting is easier than trying to exercise willpower at 11 PM on a Sunday after your afternoon bets went sideways.
Don't bet on your own team. 56% of online sports bettors have bet against their favorite team. Mixing fandom with finance creates emotional decisions that override rational analysis, and it can ruin the experience of watching the team you actually care about.
The states where you still can't bet
Eleven states have no legal sports betting of any kind: Alabama, Alaska, California, Georgia, Hawaii, Idaho, Minnesota, Oklahoma, South Carolina, Texas, and Utah. Of these, California represents the largest untapped market; its population alone could generate over $570 million in annual tax revenue if legalized. Texas has seen multiple legislative attempts stall, with opponents in the state Senate blocking progress. Utah's constitution bans all gambling, and the state is widely expected to be the last holdout, if it ever moves.
Several states offer betting with significant restrictions: Montana allows it only through state lottery terminals, Nebraska limits it to retail sportsbooks at licensed casinos, South Dakota restricts it to the city of Deadwood, and Washington allows it exclusively at tribal casinos. If your state is "legal" but you can't bet from your couch, you're in one of these restricted markets.
The young men problem
Sports betting's fastest-growing demographic is men aged 18 to 34. Sportsbook app downloads grew from 6 million in 2019 to 33 million in 2023. Market research shows the target demographic for betting advertising is "young, single, upwardly mobile, professional, and tech-savvy young men," according to a Winters and Derevensky analysis cited by the New York Council on Problem Gambling.
The problem isn't that young men are betting. It's that they overwhelmingly believe they're skilled enough to profit, despite zero evidence supporting that belief. 90% of online sports bettors aged 18 to 34 think they can make money betting on sports, per the 2025 Siena College survey. The National Council on Problem Gambling found that the rate of gambling problems among sports bettors is at least twice that of gamblers in general. Neuroscience research shows that the brain doesn't fully develop its risk-assessment capabilities until the mid-20s, making younger bettors particularly vulnerable to the illusion of control.
The pattern is predictable: a new bettor wins a few early bets (statistically inevitable with enough people trying), interprets the wins as evidence of skill, increases bet sizes, and then regresses to the mean. By the time the math catches up, they're chasing losses with borrowed money. The Siena study found that 54% of online sports bettors place bets at least once or twice a week. Frequency plus overconfidence plus easy mobile access is a combination that the gambling industry understands very well.
Prediction markets: gambling's newest disguise
Prediction markets like Kalshi and Polymarket allow users to bet on real-world outcomes (elections, economic data, weather events) through a platform that looks and feels like a stock trading app. Several major sportsbooks, including DraftKings and FanDuel, have launched their own prediction market products.
A March 2026 Citizens report found that the median loss for prediction market users was 8%, compared to 5% for traditional sportsbook users. Only the highest-volume traders (those wagering over $500,000) showed a positive median return, suggesting that smaller, less-informed users are subsidizing a small number of sophisticated participants. Nevada has filed legal action against Kalshi for marketing its products as "legal" in all 50 states, and sports leagues including the NFL and NCAA have urged prediction markets to halt contracts they consider easily manipulable.
If you're using a prediction market because it feels more like "investing" than "gambling," that's the product design working as intended, not evidence that the economics are different.
The bottom line
Sports betting is a $150 billion industry built on a simple proposition: most people lose, a few people win, and the house always takes its cut. Knowing this doesn't mean you shouldn't bet. It means you should bet with the same clarity you'd bring to any other financial decision: understand the cost, set a budget, and don't confuse entertainment spending with investing.
The sportsbook ads showing people celebrating big wins are technically real. Someone does win that parlay. The ads don't show the other 97 people who bet the same parlay and lost, because those people aren't interesting television. If you can enjoy the entertainment value of a $20 bet on Sunday football without it becoming $200 by the fourth quarter, sports betting is a perfectly fine hobby. If you can't, the National Council on Problem Gambling helpline is 1-800-522-4700, and it's available 24/7.
