Kalshi at a Glance
| Detail | Info |
|---|---|
| Founded | 2018 by Tarek Mansour and Luana Lopes Lara |
| Headquarters | New York, NY |
| Regulation | CFTC-designated contract market (DCM) |
| Settlement currency | USD |
| US availability | Yes — 40+ states |
| Minimum deposit | No formal minimum |
| Trading fees | Variable per contract; max ~$0.02 per contract |
| Deposit methods | ACH, wire transfer, debit card, crypto, PayPal, Venmo |
| Mobile app | iOS and Android |
| Total funding | ~$1.59B across 8 rounds |
| Valuation | $11B (Series E, Dec 2025); reportedly seeking $20B in 2026 |
| Key investors | Paradigm, Sequoia Capital, Andreessen Horowitz, CapitalG, ARK Invest, Y Combinator |
What Is Kalshi?
Kalshi is a CFTC-regulated prediction market exchange where users trade event contracts — binary yes/no questions about real-world outcomes. Each contract pays $1 if the event happens and $0 if it doesn't. Prices range from 1¢ to 99¢ and reflect the market's probability estimate for any given event.
The platform was founded in 2018 by Tarek Mansour and Luana Lopes Lara, both MIT graduates who went through Y Combinator before spending years navigating the regulatory process to become the first CFTC-approved prediction market exchange. That regulatory foundation is Kalshi's defining trait — it's the platform built from the ground up to operate legally in the United States.
What started as a niche platform for economics and weather contracts has exploded into one of the largest event trading exchanges in the world. In late 2025, Kalshi raised $1 billion in a Series E round at an $11 billion valuation, led by Paradigm with participation from Sequoia, a16z, ARK Invest, and others. Total funding now exceeds $1.59 billion. As of early 2026, the company is reportedly seeking a $20 billion valuation in its next fundraising round.
The growth has been driven overwhelmingly by one category: sports.
How Does Kalshi Work?
The Basics
Every Kalshi market is a simple yes/no question. "Will the Fed cut rates at the April 2026 meeting?" "Will the Chiefs win this Sunday?" "Will Bitcoin close above $100k this week?"
You buy contracts priced between 1¢ and 99¢. If you buy YES at 35¢ and the event happens, you receive $1 — a 65¢ profit. If it doesn't happen, you lose your 35¢. You can also buy NO, which is the inverse position.
Unlike traditional sports betting, where you're playing against a bookmaker, Kalshi operates as an exchange. Every trade is matched between buyers and sellers. The platform doesn't set the prices — the market does.
Placing a Trade
The trading flow is deliberately simple:
- Browse markets by category or search for a specific event.
- Select a market.
- Choose YES or NO.
- Set your trade size (number of contracts).
- Review the price, potential profit, and fees.
- Confirm.
You can sell your position at any time before the market resolves. If the price moves in your favor, you take profit. If it moves against you, you cut your loss. You don't have to wait for the event to happen.
Order Types
Kalshi supports both market orders (execute immediately at the best available price) and limit orders (set your own price and wait for a match). Limit orders — which Kalshi calls "maker" orders — get lower fees, incentivizing users to add liquidity to the order book.
What Markets Can You Trade on Kalshi?
Kalshi's market catalog has expanded dramatically over the past year. The platform currently lists over 350,000 active contracts across several categories.
Sports (Kalshi's Biggest Category)
Sports now accounts for roughly 90% of Kalshi's trading volume. The platform covers NFL, NBA, NCAAB, NHL, soccer, tennis, golf, UFC, and esports, with new sports being added regularly.
Beyond simple game outcomes, Kalshi offers spread contracts, totals, player props, and a parlay-equivalent feature called "Build Your Combo" — introduced in 2025. For anyone coming from traditional sports betting, the contract format feels immediately familiar, with the key difference being that you're trading on an exchange rather than against a house.
The Super Bowl 60 window was a landmark moment: Kalshi and Polymarket combined generated $1.63 billion in Super Bowl-related trading, with Super Bowl Sunday alone producing approximately $1.34 billion — the single largest trading day in prediction market history.
Politics and Elections
Kalshi's second-largest category. Contracts cover US presidential, congressional, and gubernatorial races, as well as policy outcomes, Supreme Court decisions, and geopolitical events. Political markets were Kalshi's original core and still offer good depth, though Polymarket now leads on total political market variety.
Economics and Finance
This is where Kalshi's roots show. The platform offers contracts on Fed interest rate decisions, CPI prints, GDP releases, unemployment data, S&P 500 targets, and other macro indicators. These markets react in real time to economic data — contracts reprice within seconds of CPI or jobs numbers landing.
Weather
A Kalshi specialty that no other major platform matches. You can trade on hurricane landfalls, daily temperature ranges in specific cities, snowfall totals, and other weather events. These markets are niche but attract a dedicated following.
Crypto
Kalshi offers crypto price prediction contracts settled in USD — not tokens. Contracts cover Bitcoin, Ethereum, and other major assets, with settlement prices sourced from CF Benchmarks. For traders who want crypto exposure without touching crypto infrastructure, this is a clean solution.
Entertainment and Culture
Oscar winners, Grammy awards, box office results, and other cultural events round out the catalog. These tend to have lower volume than sports or politics but add variety.
Kalshi Fees: What Do You Actually Pay?
Kalshi's fee structure is transparent but more complex than Polymarket's zero-fee approach on most markets.
Trading fees
Kalshi charges a variable fee on every matched trade. The fee is calculated based on the contract price — it's highest for contracts priced around 50¢ (where uncertainty is greatest) and lowest for contracts near 1¢ or 99¢ (where outcomes are near-certain).
The maximum fee is approximately $0.02 per contract. For bulk trades of 100 contracts, total fees range from roughly $0.07 to $1.75 depending on the price level.
Fees differ by order type: taker fees (market orders that execute immediately) are slightly higher than maker fees (limit orders that rest on the book). This incentivizes liquidity provision.
Some special events and market categories have modified fee schedules, so it's worth checking the fee schedule for specific contracts.
Deposit and withdrawal fees
This depends entirely on your payment method:
- ACH bank transfer: Free both ways.
- Wire transfer: Free from Kalshi's side (your bank may charge).
- Debit card: 2% processing fee on deposits; flat $2 fee on withdrawals.
- Crypto: No Kalshi fee, but network gas fees apply.
- PayPal / Venmo: No Kalshi fee.
The takeaway: if you use ACH, you pay nothing beyond trading fees. Debit cards are the only payment method with meaningful friction.
Interest on balances
One underappreciated Kalshi feature: the platform pays approximately 3.75–4% APY on idle cash balances. For traders keeping capital on the platform between trades, this partially offsets trading fees and is something Polymarket doesn't offer.
Kalshi User Experience and Interface
Kalshi's design philosophy leans clean, modern, and functional. The desktop interface uses a dark navy palette with bright accent colors that make active markets easy to scan. Categories are clearly organized in the top navigation, and a search function lets you find specific contracts quickly.
Each market page shows the contract question, a live price chart, the order book, recent trades, and the full resolution criteria. Kalshi also has a community "Ideas" section where users share analysis and predictions — though it's less active than Polymarket's per-market comment sections.
The Mobile App
The Kalshi app is available on iOS and Android and is, by many accounts, one of the better-designed prediction market mobile experiences. It's fast, the layout is clean, and trading feels responsive. Push notifications for price moves and resolution events are a useful feature for active traders.
That said, the app has drawn some criticism in recent App Store reviews. Users have reported occasional freezing and crashes, inconsistent price displays (YES and NO percentages not always summing to 100%), and UI changes that moved useful information like live P&L off the main trading screen. Kalshi's support team has been responsive to these complaints, but app stability remains an area for improvement.
Demo Account
A standout feature for newcomers: Kalshi offers a free demo account where you can practice trading with mock funds using only an email address. This is an excellent way to learn the mechanics before risking real money — and something most competitors don't offer.
Kalshi's Regulatory Position: Strengths and Challenges
Kalshi's CFTC regulation is its single biggest differentiator. As a designated contract market, Kalshi operates under strict guidelines for transparency, fair market operations, and prompt payouts. For US traders, this means legal clarity that crypto-native platforms can't match.
But regulation is also creating new challenges. Several states have begun pushing back on Kalshi's sports contracts, arguing they constitute sports betting and should fall under state gambling regulation rather than federal CFTC oversight. Most recently, an Ohio court classified Kalshi's sports contracts as sports betting — adding another chapter to an escalating legal battle.
The CFTC has asserted exclusive federal authority over prediction markets, pushing back against state-level classification efforts. This jurisdictional battle is ongoing and could have significant implications for Kalshi's sports business, which now drives the vast majority of its revenue.
For users, the practical impact is that Kalshi is available in 40+ states but not all 50. Certain states with aggressive gambling regulators have restricted or complicated access. Check Kalshi's availability page for current state-by-state status.
Kalshi's Explosive Growth in Numbers
The scale of Kalshi's recent growth is hard to overstate:
- $22.88 billion in trading volume processed in 2025.
- ~$260 million in estimated 2025 revenue — up nearly 1,000% from $24 million in 2024.
- Sports accounted for 89% of 2025 fee revenue, with the share exceeding 90% in the final months of the year.
- December 2025 was the platform's strongest month, generating $63.5 million in fee revenue.
- The final week of 2025 produced $20 million in fees alone — more than the first four months of the year combined.
- Market share in US sports betting grew to approximately 3% during peak NFL season, positioning Kalshi roughly seventh among US sports betting operators.
These numbers tell a clear story: Kalshi has found product-market fit in sports, and that category is driving the business. The question going forward is whether the platform can maintain this growth as regulatory challenges mount and Polymarket's US operations scale up.
Kalshi API and Automated Trading
Kalshi offers API access for developers and algorithmic traders, accessible through the platform's documentation. The API covers market data, order placement, portfolio management, and account operations.
The API is functional and adequate for most automated strategies, though it's generally considered less comprehensive and less well-documented than Polymarket's offering. Polymarket's WebSocket streaming, order batching capabilities, and official SDKs give it an edge for serious bot operators.
That said, Kalshi's regulated status and USD-based settlement make it attractive for institutional algorithmic traders who need CFTC compliance. Jump Trading serves as a market maker on both Kalshi and Polymarket.
Kalshi vs. Polymarket: How Do They Compare?
| Kalshi | Polymarket | |
|---|---|---|
| Best for | US traders, sports, USD simplicity | Crypto-native traders, political/macro markets, API traders |
| Regulation | CFTC-regulated DCM | CFTC-regulated (US); offshore (international) |
| Settlement | USD | USDC (crypto) |
| Deposits | Bank, debit card, PayPal, Venmo, crypto | USDC via wallet, MoonPay, Coinbase |
| Fees | Variable per contract (max ~$0.02); 2% on debit cards | Zero on most markets; small taker fees on select categories |
| Liquidity | Strong on sports; growing on other categories | Deepest in the industry across all categories |
| Sports | Dominant — 90% of volume, widest sports catalog | Growing but still behind Kalshi |
| Politics | Good depth | Deepest political markets available |
| Interest on balances | ~3.75–4% APY | No |
| Mobile app | Clean but has stability issues | Clean and stable |
| Onboarding | Easy — USD deposits, 5-minute KYC | Steeper — requires USDC and crypto wallet knowledge |
| Demo account | Yes (free) | No |
Bottom line: Kalshi is the better platform for US traders who want to deposit dollars from a bank account and start trading immediately — especially if sports is your primary interest. Polymarket wins on overall liquidity depth, fee structure, and the trading experience for anyone comfortable with crypto. Most active prediction market traders maintain accounts on both.
Is Kalshi Safe and Legit?
Yes. Kalshi is fully regulated by the CFTC as a designated contract market. The platform has raised $1.59 billion from tier-one investors including Paradigm, Sequoia Capital, Andreessen Horowitz, ARK Invest, and Y Combinator. It operates under strict federal oversight with transparency and payout requirements.
Standard caveats:
- You can lose money. Prediction markets are volatile. Contract prices can move sharply on news events, and you can lose your entire position.
- Regulatory risk is real. The ongoing state-versus-federal battle over sports contracts could impact market availability in certain states.
- Customer support is improving but not great. Email-only support through the Help Center is the primary channel. Response times have been criticized, particularly during high-volume periods. Kalshi has acknowledged this and appears to be investing in improvement.
- App stability needs work. While the mobile experience is generally good, reports of crashes, freezing, and display glitches are common enough to warrant mention.
Who Is Kalshi Best For?
Great fit:
- US-based traders who want the simplest possible onboarding — deposit USD, start trading.
- Sports traders looking for an exchange-style alternative to traditional sportsbooks.
- Macro and economics enthusiasts who want to trade directly on Fed decisions, CPI prints, and GDP releases.
- Beginners who want a demo account to practice before risking real money.
- Traders who value CFTC regulatory protection and legal certainty.
Not ideal for:
- International traders (Kalshi is expanding globally but still primarily US-focused).
- Traders who prioritize the absolute lowest fees (Polymarket's zero-fee structure on most markets is hard to beat).
- API-focused algorithmic traders who need the most comprehensive tooling (Polymarket's API is more robust).
- Users who want deep liquidity on political and crypto markets specifically (Polymarket leads here).
Kalshi's Platinum Program and Promotions
Kalshi launched its Platinum program in January 2026, offering high-volume traders exclusive perks including branded merchandise, early access to new features, and invitations to private events.
Beyond that, the platform periodically runs a Volume Incentive Program with cashback rewards for active traders, as well as promotional contests with leaderboard prizes. Kalshi also occasionally offers fee reductions during promotional periods.
For new users, Kalshi sometimes offers a $10 bonus on signup with a promo code. Check the platform's current promotions page for active offers.
Final Verdict: 4.3 / 5
Kalshi has gone from a regulatory pioneer to one of the fastest-growing financial platforms in the US in under two years. The combination of CFTC regulation, USD deposits, a massive sports catalog, and a clean user experience makes it the most accessible prediction market for American traders.
The 0.7-point gap versus Polymarket's 4.5 rating comes down to three things: fees are higher (Polymarket is free on most markets), liquidity is thinner on non-sports categories, and the mobile app has stability issues that undercut the otherwise polished experience. The ongoing state-level regulatory battles around sports contracts also introduce uncertainty that doesn't exist with Polymarket's federal-only structure.
But for anyone who wants to deposit dollars from their bank account and start trading on sports, politics, or economics within 10 minutes — Kalshi is the clear choice. The demo account alone makes it the best starting point for prediction market beginners.
Last updated: March 2026
