Kalshi vs Polymarket Comparison: Which is Better for Prediction Markets?

With Kalshi and Polymarket both being prominent sites for prediction markets, you might be wondering which one is better? Well, this is where our Kalshi vs. Polymarket guide comes into action, as we have uncovered all the differences and similarities.

Coming up, we will highlight what site does it better for market coverage, bonuses, trader experience, fees, and more. While both Kalshi and Polymarket offer unique features, they will suit different types of traders. So, we are here to help you determine which one suits you the best. Are you ready? Let’s go…

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Kalshi vs. Polymarket: Overview

Let’s take a quick look at the key differences with Kalshi vs. Polymarket:

What are prediction markets?

If you’re searching for clarification on what a prediction market is, allow us to give you a quick overview before we get started with our comparison.

It’s worth noting right off the bat that it’s pretty similar to what event predictions are. Prediction markets are pretty straightforward, meaning they are perfect for beginners. You will trade contracts on binary outcomes i.e., ‘yes’ and ‘no’. These contracts are generally priced between $0.01 and $0.99, so that when you are paired with another trader it amounts to $1.00.

As more traders buy and sell contracts, the price will shift to reflect the collective belief. For instance, the more people that buy a ‘yes’ contract, will drive the price up. As such, the price will reflect the current opinions of the traders. It’s also worth understanding that the price relates to the probability of the event happening. Let’s say you buy a ‘yes’ contact at $0.45, this indicates a 45% chance of the event occurring.

You can trade contracts on a wide range of categories, including sports, financials, politics, and pop culture. Whether you want to buy or sell contracts on your favorite sports match, music awards ceremony, or who will win the next US presidential election, it’s all possible at prediction market sites.

Kalshi vs. Polymarket: Kalshi was CFTC-regulated first

If you’re wondering whether prediction markets are legal, the truth is, they absolutely are! While Kalshi was the first prediction market to get regulated by the CFTC (Commodity Futures Trading Commission), which meant it was federally approved to operate across the US, it’s no longer the only one. Polymarket has recently gained approval by the CFTC, as of November 2025. As such, both Kalshi and Polymarket have the approval to operate across the states.

Kalshi vs. Polymarket: Fees

Kalshi and Polymarket operate completely differently, with unique pricing structures. Kalshi operates a per-contract fee structure, which means that traders will pay an upfront cost every time they want to buy or sell contracts. This includes maker and taker fees, depending on whether you have been paired with another trader or not.

On the other hand, Polymarket is a fee-free site. You will never pay any deposit or trading fees at Polymarket. However, you will be charged a 2% fee on your net profits from any winning contracts. The main benefit of this is that you do not pay a fee upfront and if you lose, then you walk away only having spent the price you paid for the contract.

Kalshi vs. Polymarket: Market depth

On the face of it, both platforms offer a similar range of prediction markets. However, when you unfold the market depth, it’s clear to see that both sites focus on slightly different categories. Kalshi delivers prediction markets on US-focused categories, including politics, sports, economics, and weather. On the other hand, Polymarket offers the perfect blend of crypto, sports, tech, and current events. That’s not to say that you won’t find politics on Polymarket, for example, just that this is where the strengths are.

Kalshi vs. Polymarket: User experience

Both Kalshi and Polymarket have desktop and mobile versions of the site, with mobile apps available, too. Side by side, they are both practically identical, so if you’re comparing Polymarket vs. Kalshi in terms of website layout, you will find it difficult to pick a winner here. Both platforms have a clean, white background with a minimalist design and similar main menus. The menu across the top of the page almost mirrors each other, for example. While both of the websites are easy to scan, we found Polymarket’s grid-style markets to flow a little better.

Kalshi vs. Polymarket: Payment options

From a banking perspective, Kalshi and Polymarket have a very different approach. It all boils down to Kalshi’s centralized system, while Polymarket operates a decentralized model. This means that Kalshi houses your trade contracts and payments, while accepting most major debit cards, bank transfers, Apple Pay, Google Pay, and wire transfers. Having said that, Kalshi does also support cryptocurrency, offering a balanced list of payment methods.

On the other hand, Polymarket is a decentralized site that holds your funds on the blockchain. Polymarket uses USDC, but it is traded through the Polygon network. As such, your transactions are protected by higher levels of security and boast the ability to offer full anonymity. If you don’t own crypto, you can use your fiat method to purchase USDC on the site, which makes it easy for everyone to get involved.

Kalshi vs. Polymarket: Bonuses

Kalshi offers a $10 signup bonus after trading $100 in contracts. You don’t need to enter a promo code, as buying and selling contracts will automatically qualify you for the bonus. There is also a referral bonus, where you can pick up a $25 bonus if your referred friends open an account. You should note, though, that these bonuses aren’t available for everyone. You must download the app and wait for a bonus to arrive. Plus, when you receive these offers, you will notice that they expire fairly fast - so, don’t hang around.

Unfortunately, we couldn’t find any bonus at Polymarket, so it appears that there are no active offers in the US. However, that’s not to say that there won’t be any available in the future. With Polymarket having just opened its doors in the United States, there is a chance the celebratory offers will crop up in the future.

Pros and cons: Kalshi vs. Polymarket comparison

Now that you have learned all about our top prediction markets, you will have a good idea on whether Polymarket or Kalshi is the site for you. To help you further, here’s a quick summary of the main points:

Pros and Cons

• Kalshi and Polymarket offer similar contracts
• Transparent fee structures
• Cryptocurrencies are accepted
• Widely available in the US

• Polymarket doesn’t have bonuses

Conclusion: Is Kalshi or Polymarket better for you?

While there are crossovers in similarities between Kalshi and Polymarket, they are fundamentally different. For starters, Polymarket operates through the blockchain on the Polygon network, which requires traders to use cryptocurrency. While this limits you somewhat, it offers faster payment processing and high levels of security. It also makes Polymarket ideal for crypto-savvy traders.

If you want a per-contract basis pricing structure, Kalshi will appeal to you the best, as you will always be able to calculate your upfront costs. However, Polymarket doesn’t apply trading fees, but they do charge a commission on your winning contracts.

While both of these sites have their niche markets and core focuses, overall they are largely the same. At the end of the day, your choice boils down to how you prefer to trade, tolerance for crypto networks, preferred pricing structure, and whether or not bonuses are important to you. Take a close look through our comparisons on this page to find out which site works the best for you. If you want to compare another site, try our Kalshi vs. Robinhood guide for a deeper comparison. And if you’d like to start at either Kalshi or Polymarket now, you can sign up on these sites using the links on this page.

Kalshi vs. Polymarket FAQs