Prediction markets vs. sports betting comes down to one question: do you want to bet against the house, or trade against the crowd?
If you’ve been placing bets on DraftKings or FanDuel, prediction markets like Kalshi and Polymarket are built on a completely different model. Instead of wagering against a sportsbook that sets the odds and takes a cut through the vig, you’re buying and selling contracts on an exchange where other traders set the price.
The practical differences go beyond structure. Prediction markets typically charge lower fees, let you sell your position before an event settles, and cover everything from elections to economic data, not just sports. But sports betting offers simplicity, established regulation in 38+ states, and an experience most bettors already understand.
To make this concrete, we’ll track the same $100 on an NFL championship market through both systems, comparing what you pay, what you can do with your position, and what you take home. By the end, you’ll know exactly which model fits your goals and where your existing skills give you an edge.
How Prediction Markets and Sports Betting Actually Work
At a sportsbook, you bet against the house. The operator sets the odds, builds in a margin (the vig), and pays you if you win. At a prediction market, you trade contracts against other users on an exchange. The price reflects what the crowd believes, and it moves in real time as money flows in.
Here’s the practical difference with a concrete example. Say you want to back the Kansas City Chiefs to win the NFL championship.
| Feature | Sportsbook (e.g., FanDuel) | Prediction Market (e.g., Kalshi) |
|---|---|---|
| What you’re doing | Placing a bet against the bookmaker | Buying contracts on an exchange |
| Pricing format | Odds (e.g., +250) | Contract price ($0.00 to $1.00) |
| Who sets the price | Sportsbook oddsmakers | Other traders (supply and demand) |
| Built-in house edge | Yes (the vig, typically 4-5%) | No vig; exchange charges trading fees |
| Can you exit early? | Limited (cash-out at reduced value) | Yes, sell your position anytime |
| Payout if you win | Fixed at the odds you locked in | $1.00 per contract, minus purchase price |
| Regulation | State-by-state gambling licenses | Federal CFTC oversight |
At a sportsbook, you’d see the Chiefs listed at, say, +250. A $100 bet returns $350 if they win ($250 profit plus your $100 stake). The odds are fixed at the moment you place the bet.
On Kalshi, you’d buy “Chiefs to win” contracts priced at, say, $0.28 each (implying a 28% probability). Your $100 buys approximately 357 contracts. If the Chiefs win, each contract pays $1.00. Your return: $357, with profit of roughly $255 after the initial $100 investment and trading fees.
The numbers are close in this example, but the mechanics underneath are fundamentally different. At the sportsbook, the house controls the line. On the exchange, the market does.
Pricing, Fees, and the Real Cost of Each
The vig is the single biggest cost in sports betting, and most bettors never calculate it. On a standard -110/-110 two-way market, the vig is approximately 4.55%. That means for every $100 you risk at -110 odds, you’re paying roughly $4.55 in built-in margin to the sportsbook, whether you win or lose.
Prediction market fees work differently. Kalshi charges a variable fee based on expected earnings, capped at roughly $0.02 per contract for taker orders. On 100 contracts at $0.50 (a $50 position), the taker fee is $1.75. Maker orders (limit orders that add liquidity) pay 75% less. Polymarket’s US exchange charges 0.10% on the contract premium, so the same $50 position costs $0.05 in fees.
Expert Tip
The vig is invisible because it’s built into the odds. Prediction market fees are explicit. This transparency is one reason the exchange model appeals to bettors who already understand that line shopping saves money. The same instinct applies: compare fees across prediction market platforms the way you’d compare lines across sportsbooks.
Let’s continue our running example. You put $100 on the Chiefs at +250 on FanDuel. The implied probability is 28.6%, but the true probability after removing the vig is closer to 27.1%. The sportsbook pockets the difference across thousands of bets. On Kalshi, you buy 357 contracts at $0.28. Your taker fee is approximately $1.77. The contract price directly reflects market probability with no hidden margin. Your total cost is $100 plus $1.77 in fees.
For bettors placing $50 to $500 per position, prediction markets are consistently cheaper on equivalent risk. The gap narrows on high-volume or promotional sportsbook bets where operators discount the vig to attract action.
What You Can Trade (and Where)
Sports betting covers athletic competition and the markets surrounding it: moneylines, spreads, totals, player props, futures, and parlays. A top-tier sportsbook like DraftKings or FanDuel lists 20+ sports with thousands of markets daily. For pure sports coverage depth, sportsbooks still win.
Prediction markets cover sports plus everything else. On Kalshi, you can trade on Fed rate decisions, Bitcoin price targets, hurricane forecasts, Oscar winners, and whether the government shuts down, alongside NFL, NBA, and MLB markets. Polymarket offers a similar breadth with particularly deep political and crypto markets. The trade-off is that prediction market sports coverage is narrower in prop and in-game variety compared to a full sportsbook.
The regulatory picture is where things get interesting. Sports betting is legal in 38+ states, but each state licenses operators individually. If you’re in a state without legal sports betting, you’re locked out. Prediction markets operate under federal CFTC regulation, which means platforms like FanDuel Predicts can offer contracts in all 50 states, including states without legal sports betting. In fact, FanDuel Predicts restricts sports contracts to the 18 states where it doesn’t already run a sportsbook, specifically to avoid regulatory conflict.
Warning
Prediction market availability is changing fast. Multiple states have issued cease-and-desist orders to prediction market platforms for sports contracts, arguing they constitute unlicensed gambling. Ohio, Massachusetts, Nevada, and several other states have active legal challenges as of early 2026. Check current availability before depositing on any platform.
If you want to bet on sports and nothing else, a licensed sportsbook in your state is the straightforward choice. If you want broader event coverage or live in a state without legal sports betting, prediction markets open doors that sportsbooks can’t.
Selling Positions, Cashing Out, and Tax Differences
Here’s something sportsbooks can’t match: on a prediction market, you can sell your position before the event settles.
Back to our running example. You bought 357 Chiefs contracts at $0.28 each. It’s halftime, and the Chiefs are up 21-7. The contract price has climbed to $0.72. You can sell all 357 contracts on the exchange for approximately $257, locking in a profit of roughly $155 (minus fees) without waiting for the final whistle. If you think the lead is safe, you hold. If you want to secure profit, you sell. The choice is yours, in real time.
At a sportsbook, your +250 futures bet is locked. Some operators offer a cash-out feature, but the offered amount is typically 15-30% below fair value because the sportsbook prices in its own margin on the exit, too. Prediction market exits happen at the current market price, with transparent fees.
This ability to trade in and out creates strategic possibilities that don’t exist with fixed-odds betting. You can scale into a position as your conviction grows, cut losses early if new information changes the picture, or take partial profits along the way.
Warning: Tax Treatment Differences
Tax treatment is a genuinely important difference, and it’s evolving. Sports betting winnings are taxed as gambling income. Sportsbooks issue W-2G forms for qualifying wins. Gambling losses are deductible only if you itemize, and only against gambling winnings. Prediction market earnings may be treated as capital gains, reported on 1099-B forms.
Capital losses can offset other capital gains and, in some cases, up to $3,000 per year in ordinary income. The IRS has not issued definitive guidance specific to prediction market contracts, so rules may change. Consult a qualified tax professional before making decisions based on tax treatment.
The position management flexibility and potentially more favorable tax treatment are two of the biggest structural reasons prediction markets appeal to active sports bettors.
Skills That Transfer (and What’s New to Learn)
If you’re a sports bettor considering prediction markets, you’re not starting from scratch. Several core skills carry over directly.
| Skills | Sports Betting | Prediction Markets | Transfers? |
|---|---|---|---|
Calculating EV | Finding +EV lines vs. true probability | Finding contracts priced below your estimated probability | Yes |
Bankroll management | Fixed percentage per bet (1-5%) | Fixed percentage per position (same principles) | Yes |
Line shopping | Comparing odds across sportsbooks | Comparing prices across Kalshi, Polymarket, FanDuel Predicts | Yes |
Reading probability | Converting odds to implied probability | Contract prices are direct probability (no conversion) | Yes, simpler |
Emotional discipline | Avoiding tilt, chasing losses | Same; market volatility adds a new dimension | Yes |
What’s new: prediction markets require you to learn order book mechanics (limit orders vs. market orders), position sizing in contracts rather than dollar amounts, and the decision of when to sell a winning position versus holding to settlement. These aren’t difficult concepts, but they’re unfamiliar if you’ve only ever placed fixed-odds bets.
Why Sportsbooks Are Launching Prediction Markets
In December 2025, both DraftKings and FanDuel launched prediction market apps within three days of each other. Robinhood had already enabled event contracts, trading over 500 million presidential election contracts in 2024. Crypto.com partnered with DraftKings in February 2026 to expand into player-specific sports contracts and entertainment markets.
This isn’t coincidence. It’s a land grab.
Pro Tip
The biggest adjustment for sports bettors is shifting from “I placed my bet, now I watch” to “I have an open position I can manage.” Start with small positions and practice selling before settlement to build the habit.
Prediction markets let these companies reach customers in states where sports betting isn’t legal. FanDuel Predicts launched in all 50 states on day one, offering sports contracts specifically in the 18 states where its sportsbook doesn’t operate. That’s millions of potential users who were previously unreachable.
The financial stakes are enormous. Kalshi reported over $1 billion in trading volume on Super Bowl Sunday 2026, a 2,700% increase from the year before. Meanwhile, a Citizens analyst estimated prediction markets would attract $630 million in Super Bowl wagering and account for 80% of the year-over-year growth in total Super Bowl betting volume.
For bettors, this convergence is good news. More competition means better pricing, lower fees, and more platforms fighting for your business. For the industry, it signals that prediction markets and sports betting are heading toward a blurred middle ground.
The Bottom Line
Prediction markets and sports betting overlap in what they let you do (put money on future outcomes) but differ in how they do it. Sportsbooks offer simplicity, deep sports coverage, and familiar regulation. Prediction markets offer lower explicit fees, the ability to sell positions before settlement, broader event coverage, and potentially more favorable tax treatment.
Choose sports betting if you want a straightforward experience, stick primarily to athletic events, and prefer the regulatory clarity of a state-licensed operator.
Choose prediction markets if you want lower trading costs, the ability to manage positions actively, access to non-sports markets, or live in a state without legal sports betting.
Many experienced bettors use both. The tools complement each other, and the skills transfer in both directions.
Interested in finding the right prediction market platform? Explore our best prediction market apps guide for hands-on reviews and comparisons.