Kalshi monetizes via exchange fees

This makes Kalshi look more like a trading venue than a casino. A sportsbook keeps whatever is left after paying winners, so revenue swings with odds setting and bettor results. Kalshi instead charges each side when contracts trade, so revenue scales with how often people buy, sell, and build parlays. That is why sports volume and fast market turnover matter more than picking a winning spread.1 2 3

• On Kalshi, retail traders pay exchange fees that net to roughly a 1% effective take rate on volume, while market makers can trade free and earn rebates for adding liquidity. That is exchange economics, where the platform gets paid for matching flow and keeping markets tight.2
• Sports fit this model especially well because contracts resolve in hours, not months, so the same dollar can be reused again and again. Internal research ties Kalshi's sports shift to much faster capital recycling, with sports reaching roughly 75% to 80% of volume and driving most fee revenue.1 2 3
• The contrast with sportsbooks is concrete. DraftKings and FanDuel make money from hold, usually around 4% to 5% of handle, while prediction markets charge much lower trading fees, around 1% to 1.5% on Kalshi and 0% on Polymarket for some categories. Lower fees can attract more price sensitive, trading oriented users.2 3 4

As sports contracts, parlays, and eventually perps deepen liquidity, the category is likely to keep converging with consumer trading apps. The winners will be the venues that can keep fees low, attract market makers, and compound volume across partners, because in this model more trading activity, not better house odds, is what expands revenue.1 3 4