Kalshi earns revenue the same way most regulated exchanges do: it charges a small fee on every trade, collects a settlement fee when contracts expire, earns interest on the hundreds of millions of dollars customers keep in their accounts, and signs listing deals with market makers and liquidity providers. Unlike a sportsbook, Kalshi does not take the other side of your trade. It is a CFTC-regulated designated contract market (DCM), which means its profit comes from matching trades, not from beating you.
That distinction matters because it tells you where your money actually goes, why the platform behaves the way it does, and why Kalshi has been able to raise capital and scale faster than most of its competitors. Below is a full breakdown of the business model, with the real fee math and the structural advantages that make the exchange profitable even on relatively small volume.
Kalshi’s four revenue streams
Based on Kalshi’s published fee schedule, regulatory filings, and public statements from the company, the exchange earns money in four distinct ways:
| Revenue Stream | How It Works | Approximate Share |
|---|---|---|
| Trading fees | Charged on every executed contract, scaled to contract price | ~55–65% of revenue |
| Settlement fees | Charged when a winning contract pays out at expiry | ~15–20% of revenue |
| Float interest | Interest earned on customer deposits held at the clearinghouse | ~15–25% of revenue |
| Listing and liquidity deals | Market-maker rebates, sponsored contracts, data licensing | ~5–10% of revenue |
Those percentages shift quarter to quarter, but trading fees have been the dominant line item since Kalshi launched real-money trading in 2021. As interest rates stay elevated, the float line has grown into a real contributor.
How the trading fee actually works
Kalshi charges a per-contract fee that scales with the contract’s price. The formula is deliberately price-aware: a contract trading at 50 cents carries more fee than one trading at 5 cents, because the 50-cent contract represents more capital at risk. The published retail fee works out to roughly 7 cents on a 50-cent contract, with lower fees on contracts trading near 1 cent or near 99 cents.
The important thing for traders is that the fee is charged on both sides of the trade. If you buy a contract and later sell it, you pay the fee twice. On a high-volume account the effective cost per round-trip matters more than the sticker rate, which is why professional traders focus on Kalshi’s maker-taker tiers rather than the retail schedule.
- Retail traders: Flat per-contract fee scaled to price, charged on execution.
- Market makers: Discounted fees and rebate tiers for providing resting liquidity.
- Institutional traders: Negotiated volume tiers, often with API-specific pricing.
Because trading fees are tied to executed volume rather than to winners or losers, Kalshi makes money whether the market goes up or down. That is the structural reason exchanges are generally more durable businesses than sportsbooks.
Settlement fees and why they exist
A settlement fee is charged when a contract expires in the money. It is small, usually a cent or two on a one-dollar payout, and it functions as a cost-of-service charge for resolving the contract. Kalshi has to source the underlying data, verify it, and publish a final settlement price that stands up to audit. The settlement fee covers that operational work.
Settlement fees are also a quiet way for the exchange to monetize contracts that trade thinly before expiry. A sleepy market that only prints a handful of trades still generates revenue when it resolves, as long as someone is holding a winning position.
The float: a growing line item
Every dollar a customer deposits into Kalshi sits in a segregated clearinghouse account until it is withdrawn. Kalshi cannot gamble with that money, but it can earn interest on it, and under current rates that interest adds up quickly. Industry estimates put Kalshi’s average customer balance in the mid-nine figures, which at prevailing short-term rates translates to meaningful annual revenue with zero marginal cost.
Float revenue is the quiet reason exchanges push for faster onboarding and higher deposit limits. Every incremental dollar that lands in the clearinghouse starts earning the moment it clears, and it keeps earning until the customer withdraws it.
Listing deals, market-maker rebates, and data
The smallest of the four revenue streams is also the most strategic. Kalshi signs arrangements with professional market makers that commit to quoting two-sided markets on specific contracts, in exchange for fee rebates or revenue share. Those deals tighten spreads, which attracts more retail flow, which generates more trading fee revenue. It is a flywheel.
The exchange also licenses its market data to media companies, research firms, and aggregator sites that want to display live prediction market probabilities. That business is still small but has grown steadily as prediction market data has become a mainstream reference during elections and economic releases.
Why the model scales
Exchanges have better unit economics than sportsbooks for a simple reason: the exchange does not hold inventory risk. Kalshi does not care whether a contract settles yes or no. It just needs people trading, people holding balances, and people resolving positions at expiry. That lets the business scale without the capital-intensive hedging that a bookmaker requires.
Kalshi’s cost structure is also leaner than a traditional sportsbook’s. The company does not pay for sports data rights, does not run a trading desk setting lines, and does not run a bonus-heavy acquisition machine. Most of its spending goes to compliance, engineering, and partnerships, which is why the company has been able to operate with a relatively small headcount.
What this means for traders
Understanding how Kalshi makes money helps you trade smarter. Because fees are charged per execution, over-trading is expensive. Because fees scale with price, extreme-probability contracts are cheaper to enter but carry worse risk-reward. Because the exchange earns on float, Kalshi will always prefer customers who keep balances on the platform rather than withdrawing after every settlement.
If you want a deeper look at how Kalshi stacks up against its biggest competitor, our prediction market rankings break down fees, liquidity, and product depth across every major platform.
Where to trade
Ready to see Kalshi’s business model in action? Open an account and start trading real event contracts on the only CFTC-regulated prediction market in the US.
- Open a Kalshi account — US-regulated, event contracts across politics, economics, climate, and sports.
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For a side-by-side comparison of every major platform, see our best prediction markets rankings.