How Does Kalshi Work? A Complete Guide to the Platform’s Mechanics, Markets, Fees, and Settlement (2026)
Kalshi lets you trade on whether real-world events will happen on a live exchange regulated by the CFTC. If you’ve heard about prediction markets and want to know exactly how Kalshi works under the hood, this page is for you.
This guide covers all of it, from your first deposit to your first winning trade. Learn important information such as how contracts are priced, how trades are matched, what you pay in fees, and how your money gets settled.
How Kalshi Works
Kalshi is a federally regulated prediction market exchange based in Manhattan, New York. Founded in 2018 by MIT graduates Tarek Mansour and Luana Lopes Lara, it launched publicly in July 2021 and became the first prediction market platform in the United States to receive formal approval from the Commodity Futures Trading Commission (CFTC) as a Designated Contract Market (DCM).
The platform’s name comes from the Arabic word for “everything”, reflecting the founders’ long-term vision to create a tradeable market on virtually any real-world outcome.
On Kalshi, users don’t bet against a house or a sportsbook. Instead, they trade event contracts, financial derivatives that settle at $1.00 if an event occurs or $0.00 if it doesn’t, with other users on a live order book. Simply put, Kalshi facilitates the exchange and charges transaction fees on trades.
As of 2025, Kalshi has grown into the largest prediction market by volume in the world, regularly processing $5+ billion in monthly volume, with sports markets accounting for roughly 90% of activity. The platform raised $1 billion in a December 2025 funding round at an $11 billion valuation, and has expanded to over 140 countries.
How Kalshi’s Event Contracts Work
Every tradeable instrument on Kalshi is a binary event contract, meaning a Yes/No question tied to a verifiable real-world outcome.
The Core Mechanic
- Each contract pays $1.00 if the event resolves “Yes” and $0.00 if it resolves “No.”
- Contracts trade at prices between $0.01 and $0.99, which represent the market’s implied probability of the event occurring.
- Every “Yes” contract has a corresponding “No” contract. The two always sum to $1.00 (before fees).
A Concrete Example
- Market: “Will the Federal Reserve cut rates at its next meeting?”
- Current Yes Price: $0.62
- Implied Probability: 62%
If you buy 100 “Yes” contracts at $0.62:
- You Pay: $62.00 (plus fees)
- If the Fed Cuts: you receive $100.00 → net profit ~$38 (minus fees)
- If the Fed Holds: you receive $0.00 → you lose your $62 + fees
Alternatively, you could buy 100 “No” contracts at $0.38 ($1.00 – $0.62), predicting the Fed holds rates.
How Contract Prices Move
Prices are set entirely by market activity, not by Kalshi. When more traders believe an event will happen, demand for Yes contracts increases, driving the price up. When sentiment shifts, prices fall. This crowd-sourced pricing is what makes prediction markets valuable as forecasting tools.
The Order Book: Makers vs. Takers
Kalshi operates as a quote-driven, decentralized market with a live order book on both the yes and no sides of every contract.
Makers
A maker places a limit order, they declare:
- Which side they want (Yes or No)
- The price they’re willing to pay
- How many contracts they want at that price
Maker orders sit on the order book until another trader accepts them. They are not filled immediately. Because makers provide liquidity to the market, they are charged a lower fee than takers.
Takers
A taker places a market order, they accept the best available price currently listed on the order book and get filled immediately. They pay a higher fee because they consume liquidity.
Key and Bid/Ask Spread
The best available Yes buy price is the Yes bid. The best available Yes sell price (or equivalently, the best No offer) is the Yes ask. The spread between them represents the cost of immediate execution. Narrower spreads indicate more liquid markets.
Limit vs. Market Orders
| 📲 Order Type | ✔️ Execution | 💰 Fee Rate |
| Market order (taker) | Immediate (at best available price) | Higher (~7% coefficient) |
| Limit order (maker) | Delayed (waits for a match) | Lower (~1.75% coefficient) |
| Cancel a resting order | N/A | No fee charged |
Makers and takers are the counterparties to every trade. Kalshi itself has no stake in the outcome.
How Kalshi Works: Market Categories
Kalshi organizes its markets into several broad categories. Read on to learn more about each.
Sports
Since early 2025, sports markets have become the dominant activity on Kalshi, accounting for over 90% of platform volume. Markets cover game outcomes, player props, season-long futures, and in-game events across the NFL, NBA, MLB, NHL, college sports, and more.
Financial & Economic
Markets tied to measurable macroeconomic data: Federal Reserve rate decisions, CPI and inflation readings, unemployment reports, S&P 500 and Nasdaq-100 index levels, and GDP data. These are among Kalshi’s original market types and attract more institutionally oriented traders.
Politics & Elections
Following court victories in 2024 and 2025, Kalshi offers fully regulated election markets as federally approved event contracts. These cover federal and state election outcomes, legislation passage, and other political events.
Culture & Entertainment
Markets on award show winners, streaming chart performance, box office results, social media milestones, and cultural moments.
Weather & Climate
Markets on measurable weather outcomes such as temperature thresholds, hurricane activity, and seasonal records.
Technology
Markets on product launches, earnings surprises, AI benchmark announcements, and other verifiable tech events.
Market Structure: Series → Events → Markets
Kalshi organizes its content in a three-level hierarchy:
- Series: A template/category (e.g., “NFL Game Outcomes”)
- Event: A specific instance (e.g., “Chiefs vs. Eagles, January 26”)
- Market: A specific binary contract within an event (e.g., “Will the Chiefs win? Yes/No”)
This structure matters when using Kalshi’s API or navigating the platform, as tickers are assigned at the market level.
How Kalshi’s Fee Structure Works
Kalshi’s fee model is one of the most distinctive aspects of the platform. Rather than a flat percentage or a per-contract dollar amount, Kalshi uses a probability-weighted formula that scales with the contract price.
The Fee Formula
Taker fee per contract:
Fee = 0.07 × P × (1 − P)
Maker fee per contract:
Fee = 0.0175 × P × (1 − P)
Where P is the contract price in dollars (e.g., 0.50 for a 50¢ contract). Fees are always rounded up to the nearest cent.
What This Means in Practice
The formula creates a parabolic fee curve — fees are highest at 50¢ (maximum uncertainty) and lowest near $0.01 or $0.99 (high certainty):
| Contract Price | Taker Fee per Contract | Maker Fee per Contract |
| $0.01 (1¢) | ~$0.0007 | ~$0.0002 |
| $0.10 (10¢) | ~$0.0063 | ~$0.0016 |
| $0.30 (30¢) | ~$0.0147 | ~$0.0037 |
| $0.50 (50¢) | ~$0.0175 (max) | ~$0.0044 (max) |
| $0.70 (70¢) | ~$0.0147 | ~$0.0037 |
| $0.90 (90¢) | ~$0.0063 | ~$0.0016 |
| $0.99 (99¢) | ~$0.0007 | ~$0.0002 |
The Logic: if contracts near 0¢ or 99¢ had a flat per-contract fee, trading highly probable or highly improbable outcomes would become prohibitively expensive. The probability-weighted formula keeps tail markets accessible.
Note: Kalshi updated its maker fee formula in July 2025 to scale with probability in the same way as taker fees (previously, only takers paid fees). The current coefficients are 0.07 for takers and 0.0175 for makers.
Special Market Fees
Some markets carry modified fee rates:
- S&P 500 and Nasdaq-100 markets use a halved taker coefficient of 0.035 (half the standard rate), cutting trading costs by 50%.
- Certain high-volume or special event markets may carry adjusted rates. Always check the fee disclosure on the specific market page.
Deposit and Withdrawal Fees
- ACH (Bank Transfer), Wire, PayPal & Venmo: No deposit fee
- Debit Card Deposits: 2% processing fee
- Debit Card Withdrawals: 2% processing fee
- Crypto Deposits: Subject to blockchain network/gas fees
How Settlement Works on Kalshi
Settlement is the process by which Kalshi resolves a market after the underlying event has occurred and distributes funds to winning contract holders.
The Settlement Process
- Market Closes: Trading stops at the designated close time.
- Outcome Determined: Kalshi’s resolution team verifies the result against pre-specified sources (official data releases, league results, official government filings, etc.).
- Contracts Settled: Winning Yes contracts are credited $1.00 each; losing contracts are credited $0.00.
- Funds Available For Winners: Settlement typically occurs within 24 hours of market resolution. Funds become immediately available for trading or withdrawal.
Resolution Sources
Each Kalshi market specifies its resolution source in the market rules before trading begins. Common sources include:
- Official U.S. government agency releases (BLS, Federal Reserve, etc.)
- Official sports league results (NFL, NBA official box scores, etc.)
- Certified election results
- Company press releases for defined corporate events
Kalshi does not use discretionary judgment, every market resolves according to the pre-defined rules. This transparency is a core part of its CFTC-regulated structure and how Kalshi works.
What Happens If a Market Is Voided?
In rare cases where the underlying event cannot be definitively resolved, such as postponements, cancellations, or data revisions that fall outside the market rules, Kalshi may void the market. In a void, all positions are refunded at their original cost and no settlement occurs.
Closing a Position Before Settlement
You don’t have to hold a contract to settlement. At any time while a market is open, you can sell your existing position at the current market price:
- Hold a Yes position? Sell it on the order book by placing a sell order for your Yes contracts.
- Hold a No position? Sell your No contracts back to the market.
Selling before settlement allows you to lock in a profit or cut a loss without waiting for the event to resolve. Note that taker/maker fees apply to the closing trade just as they did to the opening trade.
Deposits, Withdrawals, and Cash Yield
Funding Your Account
Kalshi supports multiple funding methods:
- ACH Bank Transfer (no fee; standard processing time)
- Wire Transfer (no deposit fee; faster)
- PayPal & Venmo (no deposit fee)
- Debit (2% processing fee; fastest)
- Crypto (subject to network fees)
Withdrawals
Withdrawals follow the same fee schedule as deposits. ACH, wire transfer, PayPal, and Venmo are free; debit card carries a 2% fee.
Cash Yield on Idle Balances
Kalshi pays interest on uninvested cash held in your account, approximately 3.25% APY (rates vary and are subject to change). This is a meaningful advantage for traders holding longer-term positions, as it partially offsets the cost of capital tied up in open contracts.
Kalshi’s Regulatory Status
Kalshi’s defining competitive advantage is its regulatory structure. It is the only prediction market operating as a full CFTC-licensed Designated Contract Market (DCM) in the United States.
What CFTC Regulation Means for Users
- Fund Segregation: Client funds are held separately from Kalshi’s operating funds.
- Market Integrity: All markets must comply with strict CFTC rules against manipulation and fraud.
- Legal Recourse: Unlike offshore platforms, users have access to formal legal and regulatory channels.
- No Stake Limits: Unlike PredictIt, which caps individual positions at $3,500, Kalshi’s DCM license allows it to operate without stake limits (though individual market position limits apply, see below).
Federal vs. State Jurisdiction
In early 2026, the CFTC formally designated prediction market contracts as “swaps,” placing them under exclusive federal jurisdiction. This was intended to protect Kalshi from state-level gambling restrictions.
As of March 2026, multiple states including Massachusetts, Nevada, and Arizona have pursued their own legal actions, and the platform faces geofencing requirements in some jurisdictions. Stay tuned, as the legal landscape is actively evolving.
KYC Requirements
All users must complete standard identity verification (KYC) before trading. This includes government-issued ID verification and, for larger accounts, additional documentation.
Position Limits and Account Rules
Position Limits
Most standard Kalshi markets carry a $25,000 maximum position limit per user. Smaller or more speculative markets may have lower caps. These limits apply per market, not per account, you can hold positions across many markets simultaneously.
Prohibited Users and Geographies
Kalshi explicitly prohibits users from certain jurisdictions. As of early 2026, notable exclusions include the UK, Canada, Australia, France, Russia, Singapore, Thailand, and others. State-level restrictions in the U.S. continue to evolve.
Insider Trading Prohibitions
Kalshi’s rules, staying consistent with CFTC requirements, prohibit trading on material non-public information. The platform has faced scrutiny over potential insider trading incidents and maintains compliance policies accordingly.
How Kalshi Works FAQs
Is Kalshi legal in the United States?
Yes. Kalshi is legal in the United States. It’s CFTC-regulated and federally legal; however, some states are pursuing legal challenges related specifically to sports markets. Always check whether your state has active restrictions before depositing.
Does Kalshi trade against me?
No, Kalshi does not trade against you like a traditional sportsbook would. It’s a neutral exchange meaning your counterparty is always another user and not Kalshi. The platform earns money exclusively from transaction fees.
Can I lose more money than I invest?
No, you cannot lose more money than you invest. The maximum loss on any position is the amount you paid for your contracts. Contracts can only settle at $0 or $1, there is no margin, leverage, or risk of losses exceeding your position.
How long does it take to withdraw funds?
After settlement, funds are typically available within 24 hours. ACH withdrawals generally process within 1–3 business days after that.
What happens to my position if a market is voided?
Kalshi will refund your original cost. You are not exposed to loss on a voided market.
Are winnings taxable?
Yes, Kalshi issues 1099 forms to U.S. users and reports trading activity to the IRS. Gains from event contracts are generally treated as ordinary income or capital gains depending on your tax situation, consult a tax professional for guidance specific to your circumstances.
What is the minimum trade size on Kalshi?
One contract. At a contract price of $0.01, that’s a $0.01 minimum trade.
Does Kalshi have a mobile app?
Yes, Kalshi has a mobile app for both iOS and Android users in addition to its web interface.