Kalshi vs Polymarket: Which Prediction Market Is Better in 2026?

Kalshi vs. Polymarket comparison

Polymarket and Kalshi came onto the scene around the same time, with Polymarket launching in 2020 and Kalshi following in July 2021.

When it comes to the best prediction market promos, the Polymarket promo code has the edge in total value, with $20 in bonuses being awarded after you input the promo code SBR and make a recommended deposit of $10. The Kalshi promo code SBR only offers $10 in bonuses, but these bonus funds can be acquired with a deposit as small as $1.

In a head-to-head matchup of Kalshi vs. Polymarket markets, Kalshi has Polymarket beat by a pretty wide margin. It offers more coverage across the board and gives traders more ways to play within each category. Polymarket is still pretty limited outside sports, with politics and economics the only non-sports markets available. Kalshi, by comparison, has more than 10 categories beyond sports.

That said, Polymarket has recently made up ground on fees. It now uses the same midpoint-weighted fee model as Kalshi, where trading costs are highest around coin-flip outcomes, like 50/50 markets or contracts trading near 50 cents. The difference is that Polymarket gives traders an added incentive to post liquidity through maker rebates.

Polymarket, like Kalshi, gives traders access to limit orders. That means you can set the price you want and wait for the market to come to you. It also includes an order book with live bids and asks, which helps you see liquidity, track the spread, and read the market a little better before you jump in.

Kalshi has the advantage on banking. It offers more payment options, including PayPal, which is unavailable on Polymarket. At the same time, Polymarket doesn’t charge debit card withdrawal fees like Kalshi, so there’s at least one spot where it comes out ahead. 

Continuing my prediction market comparison, both apps are fast, but Kalshi makes market navigation easier. On Polymarket, sports markets are grouped into the same horizontal strip as politics and economics. Kalshi breaks sports out into a separate tab, so the lobby is easier to scan and use.

Kalshi is more interactive than Polymarket because it has built-in social features around the markets. The Ideas feed gives users a place to share trade takes, break down market moves, and discuss positions in the comments, adding a community element to the platform.

What are Kalshi & Polymarket?

Kalshi and Polymarket are two of the best prediction market apps where users can trade contracts on sports and real-world events in the US and worldwide. 

Kalshi

Kalshi is available in more than 140 countries globally. In the US, it operates through KalshiEX LLC, which is registered with the Commodity Futures Trading Commission as a Designated Contract Market.

That gives Kalshi a different regulatory profile from many other prediction market platforms, which entered the space by partnering with third-party exchanges rather than running their own in-house exchange structure.

At a basic level, Kalshi is a platform where users buy and sell contracts on real-world outcomes. Trading happens in a peer-to-peer market, so you are taking positions against other users rather than against the platform itself. If you buy Yes on an outcome, another trader is taking the No side of that same contract.

Markets are built in a binary Yes-or-No format. In other words, you are choosing whether something will happen or not happen. That could be a political outcome, such as whether a party will win control of the Senate, or a sports outcome, such as whether a team will win a game.

Contract prices range from $0.01 to $0.99, and that price reflects the market’s implied probability. The closer a contract is to $0, the less likely the outcome. The closer it is to $1, the more likely it is.

A market settles once the official outcome is confirmed, and Kalshi finalizes the result. After settlement, winning contracts are paid into your cash balance. Each winning contract pays out $1, while losing contracts settle at $0.

Each Kalshi event includes a market rules section that spells out exactly how the market will be settled and how special cases such as forfeits, disqualifications, or concessions are handled.

One area where Kalshi stands apart from apps like OG.com, Underdog, or FanDuel Predict is that traders can enter the market as either takers or makers.

Takers accept orders that are already available, so they are taking the current market price. Makers post the price they want and wait for someone else to match it, giving them more say in execution and helping build liquidity.

Polymarket

Polymarket comes in two versions: the global platform and the US version. They share the same brand, but the user experience and the legal wrapper differ. 

The global version is still the one most people associate with Polymarket. It’s built more for crypto users, so you start by connecting a crypto wallet, adding USDC, and trading on Polygon, a blockchain network that handles the platform’s transactions.

The US app is a different product. In the American market, Polymarket operates through a regulated exchange structure, so it looks a lot more like a traditional event-trading platform than a pure crypto venue.

The difference between global Polymarket and Polymarket US goes beyond branding and legal structure. It shapes the full user flow, from how you get started and move money in, to how hands-on the funding process is before you can place a trade.

On the global platform, the process starts with a wallet and crypto. You’re connecting a wallet, funding with USDC, and working through an on-chain flow before you can start trading.

Polymarket US is easier for the average user to get into. The onboarding flow is more familiar, and funding the account looks a lot closer to what people expect from a regulated trading platform. That said, there is a waitlist. However, you can skip it with our exclusive Polymarket promo code SBR.

Kalshi vs. Polymarket pros & cons

Kalshi and Polymarket are both strong platforms, and deciding between the two typically comes down to the trading experience you want. Below, I walk through the pros and cons of each one relative to the other, while factoring in both Polymarket Global and Polymarket US.

Market coverage & events on Kalshi vs. Polymarket

If you’re comparing Kalshi to Polymarket US, Kalshi wins on market selection by a mile. It offers a much bigger mix of sports and non-sports markets, and it has player props that you won’t find on Polymarket US.

Kalshi vs. Polymarket Global is a much closer fight, though Kalshi still comes out a little stronger when you stack everything up.

Both platforms offer 10+ non-sports categories, but they differ in where their attention in these categories lies. 

For example, Polymarket is better plugged into global politics and geopolitical developments, while Kalshi gives users more to work with in Mentions markets, with an Earnings subcategory built around company news and statements. Polymarket is more centered on comments and headlines involving politicians and public figures.

Kalshi is better stocked on futures markets than Polymarket Global. In basketball, you can trade markets like series exact score and next coach, while Polymarket is usually limited to championship winners and awards.

At the end of the day, both platforms offer more markets than the best betting sites, as they can both offer non-sports markets you won't find at DraftKings, FanDuel, or BetMGM. Although the best sportsbook promos tend to be much more lucrative than what you'll get at Kalshi or Polymarket.

Kalshi vs. Polymarket fee structure & pricing

Diving into the Kalshi vs. Polymarket fees, the two apps are priced much closer than they used to be, but they still don’t handle fees the same way. Kalshi uses a variable formula based on contract price, with standard fees calculated as 0.07 × C × P × (1 − P).

In plain English, Kalshi gets most expensive around the middle of the market, near 50 cents, and becomes cheaper as prices move toward the extremes. For most markets, its posted taker fee range is between $0.07 and $1.75 per 100 contracts.

Kalshi can charge maker fees on some markets, too, though many resting orders won’t be charged unless another trader matches them. So the pricing isn’t flat across the menu, and your cost can change depending on where the contract is trading and how you enter the position.

Polymarket US now uses a similar midpoint-weighted model, but the fee schedule is a little different. Its formula is Θ × C × p × (1 − p), with a 0.05 taker coefficient and a 0.0125 maker rebate coefficient.

This means takers get clipped the most around the 50-cent mark, while makers can come out ahead when their resting order gets picked off. The current US fee schedule also includes a temporary 50% taker rebate through April 30, 2026, which is paid weekly.

Polymarket Global takes a different route. It only charges taker fees in certain categories, and the rate depends on what you’re trading. Sports are priced at 0.03, politics, finance, and tech at 0.04, economics, culture, weather, and other at 0.05, while crypto goes up to 0.072.

Makers don’t pay trading fees on the global platform, and Polymarket says taker fees help fund daily USDC rebates for makers. Some categories, including geopolitics and world events, are completely fee-free.

Funding is part of the equation, too. Kalshi charges a 2% platform fee on debit card deposits, while ACH, wire, PayPal, and Venmo deposits don’t incur a platform fee. Crypto deposits can still come with provider charges and blockchain gas fees.

Polymarket Global doesn’t charge users to deposit or withdraw USDC. Even so, the wallet-and-on-chain flow can still introduce external costs, including third-party fees and network fees.

Kalshi vs. Polymarket legal status & regulation

Kalshi is built around a US exchange model. Polymarket is split between a US exchange product and a separate global platform.

Kalshi runs through a more vertically integrated structure. KalshiEX LLC is registered with the CFTC as a designated contract market, and Kalshi Klear LLC is registered as a derivatives clearing organization. 

In other words, Kalshi is not just a front-end app plugged into someone else’s exchange. It operates both the trading venue and the clearing layer within the same federal framework.

Polymarket is more segmented. In the US, QCX LLC, which does business as Polymarket US, is listed by the CFTC as a designated contract market. That gives the American product its own federal exchange structure.

Outside the US, Polymarket runs a separate global platform that the CFTC does not oversee. Access is also limited by geography, with certain countries and regions blocked from using the platform.

Federal oversight doesn’t settle everything. States can still challenge sports event contracts through enforcement actions, licensing arguments, and their own reading of state gambling law.

That tension is already playing out. Kalshi has faced cease-and-desist orders or litigation in states including New Jersey, Nevada, Ohio, Illinois, Maryland, and Montana. The argument from states has generally been that sports event contracts look too much like sports betting and should be regulated under state gambling law, not federal commodities law.

New Jersey argued that Kalshi’s sports markets conflicted with state constitutional and statutory limits on sports wagering. Ohio took the position that offering sports contracts without a state sports-betting license violated state law.

Polymarket has faced pressure, too. After returning to the US, it faced action in Nevada, where regulators argued its event contracts amounted to wagering outside the state’s licensed gaming system.

Kalshi vs. Polymarket user experience & platform features

Kalshi and Polymarket both give traders the main tools you’d expect to have on hand, including order books, limit orders, and activity views that show how a market has moved over time. Kalshi supports limit orders and makes order-book data available through both the app and its documentation, while Polymarket Global runs on a central limit order book and supports limit-order trading.

The bigger separation shows up in navigation and product access. Kalshi and Polymarket Global do a better job of separating sports and non-sports markets in the main menu, making browsing much easier. Kalshi goes a step further inside sports by grouping player props and related sub-markets into clearer sections, so you don’t have to dig around as much once you’re inside an event.

The current Polymarket US rollout is mobile-first, with partner materials centered on a native iOS trading app, while the global product still offers a fuller desktop experience.

Who should use Kalshi vs. Polymarket?

Kalshi is a better pick for users who want a platform that feels more plug-and-play from day one, without having to deal with wallets, crypto funding, or extra steps before trading. Polymarket is a better fit for crypto-native traders who are already comfortable with USDC and moving funds through a wallet.

For users coming from sports betting, Kalshi usually feels like the easier transition. It offers a much broader sports offering, along with more player props and futures markets than either version of Polymarket.

Polymarket US can make more sense for cost-conscious traders who care most about fees and don’t need a huge market menu. If you mostly trade major sports, politics, or economics markets and want to keep costs in check, Polymarket is for you.

Responsible trading / risk considerations

Prediction markets can move fast, and that cuts both ways. Don’t put up money you can’t afford to lose, and don’t treat a hot streak like proof you’ve cracked the code. Start small, learn how pricing works, and read the settlement rules before you trade anything. 

Volatility is another piece to respect, especially if you’re using crypto rails and dealing with wallet transfers or on-chain funding. For sports bettors, one thing to keep in mind is that prediction markets aren’t traditional sportsbooks. You’re not betting into house lines, and the risk works differently once market pricing and trader behavior enter the picture.