How to win on Kalshi

Every price is a probability in disguise. A -110 price says the outcome happens 52.38% of the time; a 42¢ contract says 42%. You have an edge when the price you can take implies a lower probability than the outcome actually has — that gap, repeated across many bets, is the only thing that makes a bettor profitable. Nothing else does, and no amount of confidence in a pick substitutes for it.

The practical version is simpler. When two venues price the same outcome and one is cheaper, the cheaper price is the better bet, whatever you think of the outcome. That is the entire idea behind this site, and it is the only claim on this page.

Kalshi is a CFTC-regulated exchange. Every contract settles at $1 or $0, so a 42¢ quote is a 42% implied probability with no sportsbook margin layered on top.

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.

Kalshi lists player markets as "X or more" yes/no contracts rather than as an over/under line, so BeatVig converts each contract to the equivalent over price before comparing it to a sportsbook number.

Because a Kalshi quote is already close to a probability, the edge shows up when a sportsbook has not moved a prop that Kalshi traders have already repriced.

A live one, from the board below. Jayden Daniels passing yards over 124.5 is -669 at Kalshi and -2500 at Hardrock. Converted to probability, that is a 9.16% gap on the same outcome — you are paying 9.16 cents less per dollar of exposure for a bet you were going to make anyway.

A gap that size does not make a bet a winner. It makes it a cheaper bet, and cheaper bets are what compound. Results over any short run are dominated by variance, and a run of losses tells you nothing about whether you were getting the better price.