You don’t need to gaze into the tea leaves to know that prediction markets are a hot topic. But trying to sort through the Kalshi vs Polymarket debate creates more questions. Good news – you’re finally going to get some answers. This article breaks down the debate into simple terms. You’ll get the truth about fees, bonuses, prediction markets, funding and other features.
You might roll with the buttoned-up Kalshi. Maybe Polymarket will catch your eye. Or perhaps you’ll do the two-step dance and join both. Read on…
Trying to figure out the best prediction market apps ranks right up there with some of the greatest debates in history. It might even be as polarizing as whether pineapple belongs on pizza.
But you can’t solve this one in a blind taste test. You need to look at the facts, starting with this overview:
Your next step is to take a fine-toothed comb through the features of these sites to see which one catches your eye. From compliance to bonuses to fees, you’ll get the full scoop here:
Watching paint dry and talking about regulations fall into the same non-thrilling category of conversation for most people. But nothing is sexier than knowing your trading activities are compliant with the law.
Both Kalshi and Polymarket are regulated by the CFTC (Commodity Futures Trading Commission). The difference? Kalshi built their exchange from the ground up within a strong regulatory framework. Meanwhile, Polymarket played the bad boy for a while in the global market. The CFTC looked over their glasses and glared at them, so they rebuilt their platform to wall off U.S. traders from the rest of the world. This made the CFTC satisfied enough to let U.S. traders resume trading on Polymarket.
State-level regulations are another issue altogether. Both platforms are sparring with the states, which can be a little messy at times. For now, you can just wait to see what the fallout is, if any.
The takeaway is that both platforms are regulated, but Kalshi has regulatory compliance ingrained in its DNA.
Both brands offer a tasty sample of what it’s like to conduct trades. Kalshi usually offers a “trade $25, get $25 in bonus trades” bonus. Polymarket requires you to deposit $10 to get $50. Both offer these credits as non-withdrawable bonuses. You can use your bonus funds to make trades, but you can’t withdraw the bonus funds themselves.
Polymarket gains a slight lead with the bonuses, but there are plenty of other features to review before you make a decision.
As you can see in the table above, these platforms have roughly the same types of prediction markets. The big difference is the liquidity. Higher liquidity (deep order books) makes it easier for you to jump in and out of markets. The higher liquidity also reduces slippage so you’re not paying more than you want to for a contract.
Kalshi is the liquidity king in the U.S. market. Its order books are especially deep for sports, economics, and financial markets. But Polymarket ain’t too shabby either. They’ve got plenty of volume in sports markets too, but politics and world-event markets is where they take the crown. See the table later on for a direct comparison across markets.
Kalshi’s funding falls within the traditional guardrails of US banking. Deposits and withdrawals are straightforward and simple using fiat currency, with bank transfers, wire transfers, and debit cards being the preferred funding methods. You can also fund your account with crypto, but the platform will convert it to the US dollar.
You may know the global Polymarket site for its cryptocurrency use and tech-bro coolness. But for US traders, the brand is all about the fiat currency – debit cards, bank wires, and bank transfers – thanks to its tussle with the CFTC.
You can’t escape the fees, so you might as well know exactly where these platforms stand with this Kalshi vs Polymarket comparison:
Prices tend to be highest at Kalshi whenever there’s a high degree of market uncertainty and/or when you place limit orders. Polymarket’s fees are highest for market orders, but the exact fees depend on the category. The geopolitical category with its 0% fee is a good place to get your feet wet and learn the platform.
Both brands offer intuitive and polished apps. Kalshi leans towards an app with an institutional feel. If an app ever wore a pocket protector, this would be the one. Polymarket's app is fast, slick and modern, with a more relaxed and fun aesthetic. Polymarket is also more of a “mobile first” brand, while Kalshi caters to traders on both the site and the app.
Since both platforms are doing the regulatory dance with the CFTC, they both have identity verification requirements in place before you can trade. These platforms will want your name, date of birth and social security number. They’ll also want proof in the form of an official identification. This is all standard, and one site isn’t better or worse on this issue.
There is no one size fits all platform for every trader, or even for every trade. The smart money is to join both platforms, and then use the one that’s a good fit for your current trade. Ask yourself:
Liquidity varies from day to day and across markets, but here’s a rough guide of what to expect:
Kalshi might be the king in one category today, but Polymarket could steal the title tomorrow. It’s also worth noting that the sharpest traders may even find Kalshi vs Polymarket arbitrage opportunities.
Prediction market traders may argue about these two platforms, but the smart traders know you can’t go wrong with either one. They both have a large number of markets available, with Kalshi edging out Polymarket US for overall liquidity. Fees are based on the orders you’re placing and the markets you’re trading. Both offer bonuses, with Polymarket offering a better deal. Both are regulated, with Kalshi shooting compliance straight into their veins. But you know what? Rigid loyalty to one brand can cause you to miss out on favorable pricing, which is why joining both is a good idea.
When you’re ready to jump in and try out your trading chops, all you have to do is tap the brands’ banners on this page to get started.
These are platforms where traders can predict outcomes by buying the corresponding event contract. Contract prices range from $0.01 to $0.99, with the price being roughly equal to the probability of a specific outcome. Incorrect contracts settle at $0. Correct event contracts settle at $1. Traders who make a correct prediction get a profit that’s $1 minus the price they paid for their contract, minus any fees.
These are parlay-style trades where you could bundle together multiple event contracts into a single trade. This gives you the potential for a higher payout, but you also need to get all predictions correct in order to get that payout. Both Kalshi and Polymarket offer combos.
Sometimes, if the fees fall within the framework outlined earlier. For example, if you’re trading geopolitical markets on Polymarket, you won’t have fees for exiting the contract.
It’s the difference between the price you expect to pay for a contract versus what you actually pay. Negative slippage eats your profits. High liquidity reduces slippage, as there are more traders available to buy or sell contracts at your desired price.
