How Kalshi Works: Complete Kalshi Trading Guide

Buy a YES contract on Kalshi at 62 cents and there are exactly two outcomes: it settles at $1.00 or it settles at $0. No partial payouts, no house edge baked into the odds like a sportsbook — just a price between one cent and ninety-nine cents that represents the market's live probability estimate. Kalshi is the only prediction market exchange in the US regulated the same way the CME or CBOE is regulated, and understanding how does Kalshi work starts with that regulatory structure, because it shapes everything from how you fund your account to how disputes get settled.

What Kalshi actually is

Kalshi received its Order of Designation from the CFTC on November 4, 2020, making it the first federally regulated Designated Contract Market (DCM) built specifically for event contracts. The business runs through two entities: KalshiEX LLC operates the exchange itself, and Kalshi Klear LLC is the derivatives clearing organization (DCO) that holds and clears customer funds. That split matters — your money sits at a federally regulated clearinghouse, not in a corporate operating account, which is the same structural separation you'd expect from a regulated futures exchange.

In 2026 Kalshi extended its product suite further, winning CFTC approval for Bitcoin perpetual futures (BTCPERP) alongside its existing event-contract lineup spanning politics, economics, weather, and sports.

How Kalshi contracts are priced

Every Kalshi market is built around a single yes/no question — "Will the Fed cut rates in September?" or "Will it snow more than 6 inches in Chicago this week?" Each market has a YES side and a NO side, and the two always sum to exactly $1.00. If YES trades at $0.34, NO trades at $0.66. Prices move continuously between $0.01 and $0.99 as traders buy and sell, and that price is the market's real-time implied probability of the event happening.

At settlement there's no gray area: the winning side pays out $1.00 per contract, the losing side pays $0. If you bought YES at $0.34 and it resolves YES, you collect $1.00 — a $0.66 gain per contract before fees. If it resolves NO, you lose your $0.34.

Reading Kalshi's order book

New traders coming from Polymarket or a traditional exchange often get tripped up by one design choice: Kalshi's order book returns bids only. There's no separate "ask" feed. That's not a missing feature — it's math. A YES bid at 62 cents is functionally identical to a NO ask at 38 cents (100 minus 62), because taking either side of that trade produces the same position. Kalshi's API (base URL api.elections.kalshi.com/trade-api/v2, with the orderbook endpoint at /markets/{ticker}/orderbook) returns bid data for both YES and NO, and any serious trading tool converts one side into a synthetic ask before displaying a conventional two-sided book. If you're pulling Kalshi data directly, budget for that conversion step — it trips up a lot of first-pass API integrations.

Funding your account and placing your first trade

Unlike Polymarket, which settles in USDC on Polygon, Kalshi runs on US dollars through traditional banking rails. Here's the actual sequence:

1. Open and verify an account. Sign up at kalshi.com and complete KYC identity verification — required because Kalshi is a regulated exchange, not a crypto-native platform.
2. Fund your account. Deposit via ACH bank transfer, debit card, or wire. No crypto on-ramp is needed.
3. Pick a market. Browse by category. Economic data releases and weather markets tend to have the tightest, most liquid books; niche culture markets can be thin.
4. Read the book correctly. Remember the bids-only convention above before you size an order off what looks like a wide spread.
5. Place a limit or market order. Limit orders let you post as a maker and capture the lower maker fee rate; market orders cross the spread immediately as a taker.
6. Manage the position. Sell before resolution to realize a mark-to-market gain or loss, or hold to settlement for the full $1/$0 payout.

Kalshi fees at a glance

Kalshi's standard taker fee is round_up(0.07 × contracts × price × (1 − price)), which is highest at a 50-cent price and cheapest near the 1-cent and 99-cent extremes. Makers — traders whose resting limit orders get filled rather than crossing the spread — pay only 25% of the taker rate. The full breakdown with worked examples at different price points lives in Kalshi fees explained; always check kalshi.com/fee-schedule for the live schedule since some contract types carry different rates.

Because pricing, fees, and liquidity all move independently of each other, a lot of Kalshi trading is really about reading two markets at once — Kalshi's book and whatever else is pricing the same event. That's the premise behind cross-venue tools: PolyMarketMaker's desktop terminal streams Kalshi order-book, candle, and open-interest data alongside Polymarket US and Polymarket global feeds in the same window, so you're not tab-switching between four sites to spot a mispriced contract. PolyMarketMaker runs Simulation at $149/mo or Live Trading at $299/mo if you want to see both books at once before committing capital.

Where to go next

Once the mechanics click, the real work is strategy and risk. Kalshi trading strategies covers seven concrete approaches with worked examples. If you're comparing venues, Polymarket vs Kalshi lays out the structural differences side by side, and Kalshi arbitrage walks through cross-venue spread trades and why the edges are usually thinner than they look. For account safety and regulatory standing, see is Kalshi safe.

FAQ

What is Kalshi?

Kalshi is a CFTC-regulated Designated Contract Market, designated November 4, 2020, that lists yes/no event contracts on outcomes in politics, economics, weather, sports, and more. Trading runs through KalshiEX LLC with funds cleared through Kalshi Klear LLC.

How does Kalshi make money?

Kalshi charges a taker fee of round_up(0.07 × contracts × price × (1−price)), capped at $1.75 per 100 contracts at a 50-cent price. Makers pay 25% of that rate. See Kalshi fees explained for worked examples.

Is Kalshi legal in the United States?

Yes, in all 50 states as a federally regulated DCM. In May 2026 the Third Circuit affirmed the CFTC's exclusive jurisdiction over sports event contracts on CFTC-licensed exchanges, preempting a conflicting New Jersey gambling statute, though state-level friction continues to surface in other jurisdictions.

How do YES and NO contracts work on Kalshi?

YES and NO prices always sum to $1.00 and range from $0.01 to $0.99. The winning side redeems for $1.00 per contract at settlement; the losing side redeems for $0.

Why does Kalshi's order book only show bids?

Because a YES bid at X cents is mathematically equivalent to a NO ask at (100 − X) cents. Kalshi's API returns bid-side data only, and trading tools convert one side into a synthetic ask to build a standard two-sided book.

This article is for educational purposes only and is not financial advice. Trading involves risk of loss.