Kalshi vs. Polymarket: Which One’s for You
Kalshi vs. Polymarket is a closer comparison now that Polymarket U.S. is showing both sports and politics. From a distance, the two platforms still look similar: Yes/No contracts, event markets, and prices that move as traders react. Once you start using them, the difference is more practical.
Kalshi is still the broader everyday option for eligible U.S. users. It works on desktop and mobile, supports dollar-based funding, and has a wider board across sports, politics, economics, weather, and other event categories. Polymarket U.S. is still more app-first and beta-feeling, but it's no longer sports-only.
That leaves a cleaner comparison: what can you trade today, how easy is it to fund the account, how quickly can you get access, and which board will you actually want to check again tomorrow?
Kalshi vs. Polymarket Key Takeaways for May 2026
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🟢 Kalshi |
🔵 Polymarket |
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|---|---|---|
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💰 Bonuses & Promos |
Use Kalshi promo code ACTION to Trade $10, Get $10! |
Use Polymarket promo code ACTION to Deposit $20 Get $20 Bonus, Use our Code to Skip the Waitlist! |
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✍️ Terms & Conditions |
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH. |
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH. |
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🏦 Regulatory Status |
CFTC Designated Contract Market with a published rulebook |
Currently operating in the U.S. through a limited, invite-only mobile beta |
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⚖️ Legal States |
Available to eligible U.S. users in approved jurisdictions, subject to market listings and state actions. Not available in AZ, IL, MA, MD, MI, MT, NV, or OH. |
U.S. beta access is limited to eligible users outside AZ, IL, MA, MD, MI, MT, NV, and OH. The U.S. beta is separate from the international Polymarket platform. |
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🤑 Deposit Methods |
USD via ACH and bank transfer; debit card available |
Crypto-based funding; supported deposits may include USDC/USDC.e, which Polymarket converts into platform collateral for trading. |
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🏟️ Event Categories |
Economic indicators (CPI, jobs, rates), politics, weather, sports |
Sports and politics are currently available in the U.S. app, with more categories expected to come as the beta expands. |
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🏧 Fees |
Trading fees on expected earnings; $0 ACH; posted card/transfer fees |
Taker fees may apply depending on the market and order type; third-party, network, or funding costs may also apply. |
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📉 Liquidity |
Exchange order book with market makers and partner distribution |
Crypto order book with large election-cycle flows and rapid listings |
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💵 Payout structure |
$1 for “Yes,” $0 for “No,” per contract rules |
Winning shares redeem for $1.00 in Polymarket collateral; losing shares settle at $0. |
TL;DR
- Kalshi is the simpler option for eligible U.S. users right now. It works on desktop and mobile, supports direct USD funding, and already has a broader live board across politics, economics, weather, and sports.
- Polymarket’s U.S. setup is still narrower than Kalshi’s, but it now includes sports and politics rather than sports only. The rollout remains more app-first and invite/waitlist-driven, so access and available markets can still feel more limited.
- The biggest practical differences are funding, fees, and board breadth. Kalshi uses standard U.S. payment rails and a posted fee formula. Polymarket’s fees depend on the market and order type, while the U.S. experience still runs through a more limited product flow.
- Both settle binary contracts the same basic way. Winning positions pay $1 per contract, while losing positions settle at $0.
Read More: A Beginner’s Guide to Kalshi: A Lightly-Technical Explainer of Contracts & Pricing
Read More: A Beginner’s Guide to Polymarket: Everything You Need to Know About Contracts & Pricing
Kalshi vs. Polymarket: Promo Codes & Bonuses
Polymarket has the larger listed welcome bonus right now. If you’re eligible and live outside the no-go states, you can claim both offers:
- Polymarket Promo Code: Polymarket is currently in a limited U.S. beta with over 1 million people on the waitlist. Eligible users in approved jurisdictions can use the invite code ACTION to bypass the line, get early access, and claim this: Deposit $20 Get $20 Bonus, Use our Code to Skip the Waitlist!
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Kalshi Promo Code: New users can sign up with code ACTION to Trade $10, Get $10!
- You can also take advantage of the refer-a-friend program at Kalshi to earn rewards.
🥇 Best Welcome Bonus: Polymarket
Which One Fits the Way You’ll Actually Use It?
If you want one account that can hold up through the whole week, Kalshi is still the easier fit. You can go from election markets to CPI to weather to Sunday’s games without feeling like you need a second app to fill in the gaps. It’s also easier to deal with day to day. Funding feels more familiar, desktop is there when you want it, and the board usually gives you more reasons to come back even when one category goes quiet.
Polymarket can still work if your routine is phone-first and focused on sports or politics. If those are the markets you care about most, the narrower U.S. setup may not bother you much. But if you’re eligible for both and trying to pick one regular home base, Kalshi still asks for fewer trade-offs right now.
Compare Kalshi's election markets to Polymarket's election markets!
How Do Prediction Markets Operate?
Think of price as probability. In a prediction market platform, a “Yes” at 0.62 implies a 62% chance of that outcome. Traders buy and sell around news flow, polls, and opinions, and can exit early if the view changes. At resolution, Kalshi winners receive $1 per contract, while Polymarket winners redeem winning shares for $1.00 in platform collateral. Losing positions settle at $0. That binary payout is why prices feel like odds, whether you trade macro prints, sports, or a high-visibility election market that mentions Donald Trump by name.
Two quick tips that help: read the contract rules and make sure you agree with the listed data source and settlement trigger, and plan funding in advance of key listing moments so you’re not waiting for transfers while the market moves.
Whether you use Kalshi, Polymarket, or both, make sure to always keep responsible trading practices at the forefront.
Read More: Spotify Top Songs Predictions on Kalshi
Read More: Grand Theft Auto 6 Prediction Markets
The main difference right now is scope and day-to-day usability. Kalshi is a CFTC-regulated DCM with a broader U.S. board across sports, politics, economics, weather, and more. Polymarket U.S. is also built for eligible U.S. users, but the current app experience is still narrower and more beta-driven, even with sports and politics now available.
Yes. Kalshi is a Designated Contract Market regulated by the Commodity Futures Trading Commission, giving eligible U.S. users a regulated path to trade with a published rulebook and market oversight.
Yes, through a limited mobile beta, but only where available. Eligible U.S. users in approved jurisdictions can bypass the waitlist by downloading the app and using Polymarket invite code ACTION to claim the current offer: Deposit $20 Get $20 Bonus, Use our Code to Skip the Waitlist! Offer not available in AZ, IL, MA, MD, MI, MT, NV, or OH.
Yes, both platforms list sports markets. Polymarket U.S. now also includes politics, while Kalshi has a broader board that includes sports, politics, economics, weather, and other event categories. Just remember these are prediction-market contracts, not standard sportsbook bets, and availability depends on where you live.
It depends on the category. Kalshi often shows deeper liquidity in macro and election markets, while Polymarket's global platform sees massive liquidity racking up around late-breaking news and elections (though eligible U.S. beta users are currently restricted to sports).
Both resolve binary outcomes the same way, so winning traders win $1 per “Yes” (1.00 USDC on Polymarket) and losing shares settle at $0 when the market ends.