Kalshi vs FanDuel
Kalshi vs FanDuel: Prediction Market vs Sportsbook
These are two genuinely different products that happen to overlap on sports. One is an exchange where you trade against other people; the other is a sportsbook that takes the other side of your bet.
Fees vs vig
FanDuel builds its margin into the price: a two-sided market posted at −110 / −110 implies about 104.8% of probability, and the extra 4.8% is the hold. You never see a line item for it. Kalshi instead charges an explicit trading fee that scales with the contract price, with the raw price itself set by the order book. Practically: on liquid markets the exchange is usually the cheaper round trip, while on illiquid ones the spread you have to cross can be worse than a sharp sportsbook number.
Regulation
FanDuel holds state gaming licences and only operates where it has one, which is why availability differs by state and why you get geolocation checks. Kalshi is a federally regulated exchange under the CFTC and operates nationwide on that basis. Some state regulators have disputed whether sports-event contracts belong under that framework and the litigation is ongoing. We're not going to make state-by-state legal claims here — verify what's available to you inside each app.
Market types
FanDuel is deeper on sports by a wide margin: every league, alternate lines, dense player props, same-game parlays, live betting. Kalshi covers sports plus categories a sportsbook can't touch — economics, elections, weather, company events — and bundles legs as combos rather than parlays. If you want six-leg SGPs on a Tuesday, that's FanDuel.
Payout mechanics
On FanDuel you stake an amount at fixed odds and collect a fixed return if it wins. On Kalshi you buy contracts at a price in cents; each settles at $1 or $0, so buying 10 contracts at 62¢ costs $6.20 and returns $10.00 on a win. Before settlement you can sell those contracts back at the market price, which is the closest thing to a cash-out but priced by the book rather than by the operator.
Kalshi: pros and cons
Pros: transparent order-book pricing, explicit fees instead of hidden vig, positions you can exit at market, non-sports markets, no line limiting of winning accounts in the way books do it. Cons: thinner liquidity on niche markets, fewer sports products, no promo machine, and a regulatory picture that is still being argued in court.
FanDuel: pros and cons
Pros: the deepest sports menu, the most polished app, live betting, boosts and promos, instant liquidity at the posted price. Cons: vig is invisible and constant, prices are set by the house, winning accounts get restricted, and you only get the cash-out number they choose to offer.
Try the exchange side
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FAQ
Is Kalshi cheaper than FanDuel?
It depends on the market. FanDuel prices its vig into the odds, so the cost is invisible but always there. Kalshi charges an explicit trading fee on the contract price instead, and on liquid markets the round-trip cost is often lower — but on thin markets a wide bid-ask spread can cost more than a sharp sportsbook line. Compare the effective price, not the label.
Is Kalshi regulated like FanDuel?
No — differently. FanDuel is licensed state by state by gaming regulators. Kalshi is a federally regulated exchange under CFTC oversight and operates nationwide on that basis. Some state regulators have disputed sports-event contracts and that litigation is ongoing, so check what's available to you in the app.
Can you cash out early on Kalshi?
Yes, in a different form. Because Kalshi is an order book, you can sell your contracts back into the market at whatever the current price is. FanDuel offers a discretionary cash-out figure it sets itself; on Kalshi the exit price is set by whoever is bidding.
Which one is better for a normal bettor?
FanDuel still wins on breadth and convenience — every league, deep player props, same-game parlays, promos and a smoother app. Kalshi wins on transparent pricing, tradeable positions and non-sports markets. Plenty of people use both, and we grade our own Kalshi positions in public either way.