Kalshi vs FanDuel arbitrage

FanDuel prices a much wider prop menu than Kalshi lists, so arbitrage between them is not spread evenly across a slate — it clusters on the handful of markets Kalshi has chosen to list, which are the headline ones. A FanDuel board of four hundred props and a Kalshi board of thirty overlap on thirty, and every position this page can find lives inside that overlap.

FanDuel is the largest book by handle in most states, which means its prices move early and move on volume. Kalshi lists fewer markets and each of them has fewer participants. The result is asymmetric: FanDuel is usually the venue that has already repriced, and the two-sided position appears because the Kalshi contract has not caught up yet rather than the other way round.

The trap on this pair is a line that is not the same line. FanDuel prices receiving yards as an over/under on a number; Kalshi lists the same player as a series of "X or more" contracts. Those are the same bet only when the thresholds correspond exactly, and a half-point difference between them is not an arbitrage — it is a middle, with a real chance of losing both legs. Every position on this page is matched on the identical line, and a pair that is a half point apart is discarded rather than shown with a caveat.

Kalshi odds today. Kalshi charges a per-contract trading fee instead of building a margin into the line. The fee is a curve, not a flat rake: it peaks at roughly 1.75¢ on a contract priced near 50¢ and shrinks toward zero at both extremes, and maker fees are a quarter of taker fees.

FanDuel odds today. FanDuel's margin is inside the price, so it is charged on every bet regardless of the result.

Leave this page open — the board above rescans itself as Kalshi's and FanDuel's prices move, so a position that opens while you're reading appears on its own rather than needing a reload. Right now the two are both quoting 2+ Touchdowns, 3+ Touchdowns, Anytime Touchdown, Passing Touchdowns, Passing Yards, Receiving Yards, Receptions, Rushing Yards, Moneyline, Spread, and Total, which is the only ground a position between them can come from.

What a card here actually means

A fair line would put Kalshi's price and FanDuel's price on opposite sides of the same bet at exactly 100% of a certainty between them. This board only prints a card when the two real prices, net of both venues' fees, add up to less than that — the gap between 100% and what they actually sum to is the arbitrage, and the stake split tells you how to size each leg so both sides return the same amount whichever one wins. On a Kalshi vs FanDuel position that return is fixed rather than probable — expected value (EV) of a certain kind rather than a probable one, which is why it's usually smaller than a single-sided bet's edge.

Kalshi's leg is the one with a finite order book behind it on this Kalshi vs FanDuel pair — check its depth before you place the FanDuel side, since it's the side that can fill at a worse price or disappear while you're placing the second leg. Run Kalshi and FanDuel's exact numbers through the arbitrage calculator before you place either leg — the fee table above uses one fixed example, and your own prices won't match it exactly. For every other pair BeatVig tracks, see arbitrage bets today.