Prediction Markets for Sports Bettors: What Is Different and Which Platform to Start With
You know odds. You know spreads. Prediction markets are not sports betting — here is what to expect.
5 Things That Are Different From Sportsbooks
💲How Prices Work
Prediction Market
60 cents = 60% implied probability. No vig baked in.
Sportsbook
-150 American odds = ~60% implied probability, but with vig already included in the line.
💸Fee Model
Prediction Market
0–2% trading fee per trade, charged separately. Some platforms charge nothing at resolution.
Sportsbook
4–10% vig baked into every line. You never see it itemized — it is just built into the spread.
🗂️What You Can Bet On
Prediction Market
Politics, economics, weather, entertainment, sports. Events with clear yes/no resolution criteria.
Sportsbook
Primarily sports and entertainment outcomes with point-spread structures.
📜How Settlement Works
Prediction Market
Contract wording defines resolution. Read the criteria before you place — same event can resolve differently on different platforms depending on exact wording.
Sportsbook
Sportsbook sets and interprets payout rules. You trust the house.
🧾Tax Treatment
Prediction Market
CFTC-regulated prediction markets may be treated as Section 1256 derivatives (Form 1099-B, capital gains rates) — not gambling income. Verify with a tax professional.
Sportsbook
Sportsbook winnings are gambling income (Form W-2G for qualifying wins). Different from PM tax treatment.
Which Platform Fits Your Background?
🏀I am a DraftKings or FanDuel user
Try DraftKings Predictions or FanDuel Predicts — familiar UX, CFTC-regulated via CME Group. Your existing account may already have prediction markets enabled.
📱I am already on Robinhood
Try Robinhood Prediction Markets — zero friction, powered by Kalshi infrastructure.
📊I am a serious bettor who wants full market depth
Try Kalshi or Interactive Brokers ForecastEx — widest market selection, deepest order books.
🌍I want crypto or global markets too
Try Polymarket — crypto-native, USDC-based, US access via Polymarket US (QCX LLC) (CFTC-authorized). Best for geopolitical and global events.
3 Traps Sportsbook Users Fall Into
⚠️ Near-Certainty Contracts Are Not Free Money
A 98-cent YES contract feels like a -5000 moneyline — a guaranteed win. It is not. Thin order books mean you may not fill at that price, and the implied 2% loss risk is real. Do not size them like sure things.
Why Near-Certainty Bets Are Not Free Money →⚠️ Contract Wording IS the Line
The resolution criteria define what you are buying. The same real-world event can resolve YES on one platform and NO on another if the contract wording differs. Read before you place.
See Contract Settlement Comparison →⚠️ Taxes Are Different — Check Before Filing
PM winnings on CFTC-regulated platforms may be derivative income, not gambling income. This can be better or worse depending on your tax situation. Do not assume sportsbook rules apply.
Prediction Market Tax Guide →Common Questions From Sports Bettors
More Guides
Kalshi Guide
Full guide to Kalshi: markets, fees, and how to get started.
Near-Certainty Contracts
Why 98-cent contracts are not as safe as they look.
Tax Guide
How prediction market winnings are taxed vs sportsbook winnings.
All Platforms
Compare all prediction market platforms side by side.
Are Prediction Markets Gambling?
The legal and regulatory answer.
State Checker
Find out if prediction markets are available in your state.