What Is Kalshi? How It Works, Fees, and Whether It’s Worth It

How Does Kalshi Work?

Every Kalshi market is a YES/NO question: “Will the Fed cut rates in March?” or “Will the Chiefs win the Super Bowl?” You buy YES or NO contracts. Each contract pays exactly $1 if it resolves in your favor and $0 if it doesn’t.

The price of a contract — say, 62¢ — is the market’s implied probability that the event will happen. A 62¢ YES contract means the market collectively estimates a 62% chance. If you think the true probability is higher, you have a potential edge buying YES. If you think it’s lower, you can buy NO at 38¢ (100¢ minus 62¢).

Converting between prediction market prices, implied probabilities, and familiar formats like American or decimal odds can be confusing. The Prediction Market Translator does that conversion automatically.

How Kalshi Payouts Work

Settlement is binary: your contracts are worth $1 each if correct, $0 if wrong. Here’s how the math plays out for a 60¢ YES contract (before fees):

Fees not included. Actual net P&L will be slightly lower after platform fees are applied.

What Does Slippage Mean on Kalshi?

Kalshi uses an order book, not a fixed-price interface. When you place a market order, you’re matched against existing limit orders. If there isn’t enough liquidity at the best price, your order fills at progressively worse prices — that difference is slippage.

Kalshi lets you set a slippage tolerance to cap how far your fill price can deviate from the quoted price. For larger orders in lower-liquidity markets, always check the order book depth before trading. A 60¢ quote on a thin market might actually fill at 63–65¢ for a meaningful position size.

Kalshi Fees Explained

Kalshi charges a taker fee on each transaction. The fee is not a flat percentage of your trade size — it peaks at contracts priced near 50¢ and shrinks as the price approaches 0¢ or 100¢:

At 50¢, that works out to 1.75¢ per contract. At 20¢ or 80¢, it’s about 1.12¢. At extreme prices (5¢ or 95¢), fees are very small — but so are your potential margins. Fees apply to both the opening trade and the closing trade if you exit early.

For a detailed side-by-side comparison, see Prediction Market Fees Compared. To see exactly how fees affect a specific trade, use the Vig Calculator.

Is Kalshi Legal?

At the federal level, yes. Kalshi is registered with the CFTC as both a Designated Contract Market (DCM) and a Derivatives Clearing Organization (DCO). That regulatory status is what allowed Kalshi to launch election and sports markets that competitors couldn’t offer.

At the state level, the picture is more complicated. Several states — including Massachusetts, Nevada, and Arizona — have argued that certain Kalshi contracts, particularly sports-event contracts, constitute unlawful sports wagering under state law and preempt federal regulation. That litigation is ongoing as of early 2026. Kalshi has restricted access for users in some states.

The legal landscape may change. Always check whether Kalshi is available in your state before funding an account.

Is Kalshi Legit?

Yes. Kalshi is a federally regulated exchange — not an offshore gambling site. It is registered with the CFTC as both a Designated Contract Market (DCM) and a Derivatives Clearing Organization (DCO), the same regulatory categories that govern major U.S. futures exchanges. Your funds are held in segregated accounts, and Kalshi is required to follow CFTC rules on market integrity, reporting, and consumer protection.

That said, “legit” and “risk-free” are not the same thing. You can absolutely lose money trading on Kalshi. The platform is legitimate; the outcomes are not guaranteed. Most retail traders on prediction markets lose money over time, particularly after fees.

How to Make Money on Kalshi

Disclaimer: Most retail traders on prediction markets lose money over time. The following is educational, not a trading strategy recommendation.

Information edge. Profitable prediction market trading requires knowing something the market doesn’t — a better model, faster data, or domain expertise in a niche area. Without an information edge, fees guarantee a gradual loss.

Probability thinking. Frame every market in terms of probabilities, not outcomes. A 70¢ contract that resolves NO still might have been the correct trade if your research gave it 50% — you had a genuine edge, it just didn’t hit.

Risk management. Never put more than a small fraction of your trading balance on a single contract. Position sizing matters more than picking winners. Use the Kelly Calculator to see a mathematically grounded position size for any trade.

Structural awareness. Understand how fees erode thin edges. A 3-point edge disappears quickly after two-way fees on entry and exit. High-confidence, wide edge trades are structurally better than marginal ones.

How to Parlay on Kalshi

Kalshi launched “Combos” in late 2025 — its version of parlays. You bundle two or more event legs into a single contract. If all legs resolve in your favor, you win; if any leg misses, you lose the entire stake.

Unlike traditional parlays with fixed multipliers, Kalshi Combos use a Request for Quote (RFQ) system: market makers submit competing quotes and Kalshi shows you the best available price. As of early 2026, Combos are available for NFL, NBA, and Mention markets.

To understand how parlay math works and evaluate whether a combo price is fair, use the Parlay Calculator.

Kalshi vs. Polymarket vs. PredictIt

The three major English-language prediction markets differ significantly in regulation, fees, and market selection:

How to Get Started on Kalshi

1. 1

   Verify eligibility

   You must be 18+ and a US resident. Check whether Kalshi is currently available in your state — restrictions apply in some jurisdictions.

2. 2

   Create an account

   Sign up at Kalshi and complete identity verification (KYC). This is required by CFTC regulations and typically takes a few minutes.

3. 3

   Fund your account

   Deposit via ACH bank transfer. Start small — there is no minimum deposit requirement, and there is no reason to fund more than you can afford to lose.

4. 4

   Learn the interface

   Browse markets before trading. Look at the order book, understand the bid/ask spread, and note the contract resolution criteria before committing capital.

5. 5

   Use free tools to evaluate pricing and risk

   Before placing any trade, use ChanceMetrics tools to understand pricing, payouts, fees, and how the market compares with your own probability estimate.

Ready to learn more or create an account? You can visit Kalshi here.

Disclosure: We may earn a referral commission if you sign up through links on this page. That does not affect our editorial content, rankings, or tool methodology.

Frequently Asked Questions

Common questions about how Kalshi works, eligibility, fees, and taxes.