TOTAL VOLUME:
$146.7b
24H VOL:
$177,119,708
24H TRANSACTIONS:
2,781,800,361
OPEN INTEREST:
$1,758,847,531
505,679
Markets across
37,613
events
MATCHED EVENTS:
2,948
PLATFORM COVERAGE:
5
Polymarket:
38%
VS.
Kalshi:
62%
People call it Kalshi betting, but you trade Yes or No contracts that settle at $1 or $0. Here is what you buy, how it differs from a wager, and why states argue.
Jared Polites
Oct 22, 2026

TL;DR
Hearing "Kalshi betting" from friends and wondering whether that is even the right word? It is the phrase most people use, but what you buy is a contract, not a wager against a bookmaker.
Each Kalshi contract asks a yes or no question and pays $1 if you are right, $0 if you are wrong. This guide shows what that means in practice, where it differs from a sportsbook, and why the label is still in dispute. Along the way it shows how to read the prediction market data behind a Kalshi price.
Kalshi calls what it offers event contracts, which it describes as a way to trade on your opinion about a specific yes or no question. That is different from placing a wager with a company that takes the other side.
The label still matters, because some states treat sports contracts as gambling and say they fall under state law. We cover that dispute below. For the mechanics of the contract itself, the "betting or trading" question comes down to who is on the other side and how the price is set.
You trade a Yes or No contract on a question such as "Will the Fed hold rates in December?" Kalshi says each contract settles to $1 if your answer is right and $0 otherwise, and prices range from $0.01 to $0.99.
Say you buy Yes at $0.60. You are matched with another user who buys No at $0.40, so the two sides together put up $1. If the answer is yes, you collect $1. If it is no, the other side does.
Your risk is capped at what you paid. You can only lose money you put into the trade.
A sportsbook sets a line and takes the other side of your wager. A Kalshi contract has no house setting the price. Other users do, by placing orders against each other, and Kalshi matches them.
You can also leave early. Selling a contract before the event settles lets you take a gain or cut a loss, which a standard wager does not allow once it is placed.
Our full comparison of event contracts against sportsbook lines covers the margin built into a line and how a contract price compares.
It means the market gives that outcome roughly a 65% chance. A price is the market's implied probability, built from real orders rather than a poll or an editor's guess.
Right now Kalshi prices Democratic control of the House at 91.4%0, with $21.3m traded on that market.
The same question is traded elsewhere. Polymarket prices the same outcome at 92.5%. A gap between the two is normal, and our piece on why odds disagree explains where it comes from.
Yes, the structure is shared. Kalshi runs a CFTC-regulated exchange, and other platforms let you trade outcome contracts on their own terms.
Opinion is built around macro contracts. Limitless and Predict.Fun round out the five platforms PredictionHero tracks, alongside Polymarket and Kalshi.
Each one has its own order book, its own traders and its own rules for how a contract settles, so the same question can carry a different price. PredictionHero lines up prediction market data from all five platforms on one screen, so the spread is visible without opening five tabs.
Kalshi lists sports contracts under federal regulation, and some states say those contracts are gambling that belongs under state law. Kalshi has been a CFTC-designated contract market since November 4, 2020, and its help center says it is subject to U.S. regulatory oversight by the CFTC.
The courts have not settled it. In September 2026 the Sixth Circuit held, in cases from Ohio and Tennessee, that Kalshi's sports contracts are not swaps, which puts them under state gaming regulation, according to CoinDesk. The Third Circuit reached the opposite conclusion in New Jersey's case, and New Jersey has asked the Supreme Court to step in. I found no Supreme Court decision as of mid-October.
For a state-level example, see whether Kalshi is legal in Texas, and the wider CFTC against states picture.
Kalshi is a regulated exchange, and that is the part that is settled. The open question is narrower: whether its sports contracts can be offered under federal rules without meeting each state's gambling law.
For a full look at regulation, payouts and fees, read our Kalshi legit review. If your concern is whether your money is safe, our guide to custody shows how funds are held on each platform.
Kalshi describes what it offers as trading event contracts, where a Yes or No contract settles at $1 or $0. Some states say its sports contracts are gambling, and federal appeals courts have disagreed on the question. Both descriptions are in use, so the answer depends on who is asking.
No. Your risk on a contract is limited to the money you used to buy it. If a Yes contract bought at $0.60 settles at $0, you lose the $0.60. You cannot lose more than that on a single contract, because the most it can fall to is $0.
Yes. You can sell a contract before the event settles to take a gain or limit a loss. How easily you can exit depends on the market's spread and volume, since a thin market can make selling at a fair price harder.
Both let you trade outcome contracts. Each runs its own order book, trader base and settlement rules, so the same question can carry a different price, which side-by-side prediction market data makes easy to see. Polymarket and Kalshi also differ in how they are regulated and who can use them, so check each platform's current terms.
Not in the same way everywhere. Kalshi is a regulated exchange, but several states dispute whether its sports contracts fall under federal or state law, and courts have ruled both ways. Check your state's current status before you trade, since the situation keeps changing.
PredictionHero aggregates publicly available prediction market data for informational purposes only. This is not financial or legal advice. Prediction markets may not be available in all jurisdictions, and legal status can change; verify current status before relying on it, especially for active court cases.
Related

Yes, Kalshi is CFTC-regulated and has been since 2020. Here's what that actually protects, what the fees really cost, what deposits and withdrawals are like, and the state-by-state legal fight.
Jared Polites · Jul 27

Kalshi is a CFTC-regulated exchange where you trade Yes/No contracts on real-world events, funded by bank, card, wire, or crypto, with fees and pricing that work nothing like a sportsbook's.
Jared Polites · Oct 11

Here's exactly what changes when you trade a Kalshi or Polymarket event contract instead of betting a sportsbook line.
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