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

Polymarket vs Kalshi: Key takeaways

I've spent dozens of hours on both Kalshi and Polymarket to build this comparison. It's clear to me that Kalshi is currently the better product overall than Polymarket. One of the biggest factors is that Kalshi simply offers more markets for both sports and non-sports, although it's now closer than ever as Polymarket adds new markets. 

Here's a closer look at some key similarities and differences I found between the two platforms:

Welcome Offers

When it comes to the best prediction market promos, the Polymarket promo code has the edge in total value, with $50 in bonuses being awarded after you input the promo code SBR and make a deposit of $20. The Kalshi promo code SBR only offers $20 in bonuses, but these bonus funds can be acquired with a deposit as small as $10, making is easier to obtain. 

Markets

In a head-to-head matchup between Polymarket and Kalshi markets, Kalshi used to win by a landslide. It offered more markets, including those in sports categories, than Polymarket did. However, that gap has been narrowed in recent months, thanks to Polymarket introducing more new markets to try and match its largest competitor.

Polymarket now has plenty of markets, including politics and economics, but not quite as many as Kalshi, which has more than a dozen categories beyond sports.

Fees

That said, I found that the prediction market apps were comparable when it comes to fees. Polymarket 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.

Limit Orders

Polymarket, like Kalshi, gives traders access to limit orders. This is one of my favorite features of both platforms, as it allows you to 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.

Payment Options

Kalshi 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. On the other hand, Polymarket is more suited for those who want to use cryptocurrency to deposit and withdraw. 

User Experience

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.

I found Kalshi to be 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.

Anonymity

There are some small but important differences in how Kalshi and Polymarket share information publicly. On Kalshi, you must register with your real name and information. However, individual trading data is generally kept private. On Polymarket, all trading data is made public. However, your account itself can be anonymous, tied to a crypto wallet. In practice, this means that while the public can see that "PolymarketUser123" traded $100 on a particular market, there's no way to tie that user to any specific real-life person. 

Polymarket vs Kalshi: pros & cons

Kalshi and Polymarket are both strong platforms. Deciding between the two typically comes down to what kind of 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.

If you're already an experienced cryptocurrency user, you'll likely find Polymarket easier to use, since it incorporates popular crypto coins into its payment options. Both platforms have excellent mobile apps, making it easy to trade on the go. 

What are Polymarket and Kalshi?

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. The apps are available in states where sports betting is legal, illegal, or limited. For example, you can use Polymarket and Kalshi in Florida, where only one online sportsbook (Hard Rock Bet) can legally operate.

Polymarket

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

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. For a $50 bonus, deposit $20 after entering Polymarket promo code SBR.

If you're looking for other apps like Polymarket, we have some good suggestions. 

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, ProphetX, or FanDuel Predict is that traders can enter the market as either takers or makers. For more info on these platforms, check out our apps like Kalshi page.

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.

Market coverage & events on Polymarket vs Kalshi

When I compared Kalshi to Polymarket US, it was clear that Kalshi wins the battle over total market coverage. It offers a much larger 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 I still say that Kalshi is slightly better when everything is stacked up.

Both platforms offer 12+ 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.

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

Polymarket vs Kalshi fee structure & pricing

Diving into the Polymarket vs Kalshi fees, the two apps are priced much closer than they used to be. Kalshi uses a variable formula based on contract price. For those curious about the formula, standard fees are calculated as 0.07 × C × P × (1 − P).

To put this simply, Kalshi's fees are at their worst around the middle of the market, near 50 cents, but they're much less noticeable as prices move toward the extremes. For most markets, the posted taker fee range is between $0.07 and $1.75 per 100 contracts.

I also found that Kalshi charges maker fees on some markets, though many resting orders won’t be charged unless another trader matches them. In summary, pricing isn't flat, 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.

Prediction market fees made simple

If math isn't your thing, in simple English, this formula means that 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 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.

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.

Polymarket vs Kalshi legal status & regulation

Short answer: Both Kalshi and Polymarket are legal to use in the U.S. and available in almost every state. 

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. While you can still use Polymarket and Kalshi in California, the country's most populous state, other states without legalized sports betting have fought hard against prediction market platforms. For now now, though, you can use Kalshi in Georgia and many other states without legalized sportsbooks. 

Kalshi has faced cease-and-desist orders or litigation in many states, including New Jersey, Michigan, 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 rather than federal commodities law.

Most recently, state officials in Michigan ordered Kalshi to shut down sports event contracts by Aug. 12, 2026. However, the CFTC responded, saying that the state doesn't have the authority to make such a demand and ordering Kalshi to keep offering sports contracts in the state.

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. It has also faced some pushback from lawmakers in the Lone Star State, but for now, you can use Kalshi in Texas.

Polymarket vs Kalshi 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.

Polymarket initially rolled out in the United States as a mobile-first platform, with partner materials centered on a native iOS trading app. However, American users can now access a fuller desktop experience, if they wish. 

Who should use Polymarket vs Kalshi?

I'd argue that Kalshi is the 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, such as those who use Kalshi in New York, 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 and potential risks

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.

Like any form of stock trading, investing, or plain ol' gambling, there is risk involved when you put your own money up against uncertain outcomes.

If you feel that your spending is out of control, use built-in responsible trading tools like deposit or spending limits, or call help lines such as 1-800-GAMBLER or 1-800-MYRESET.