Quick Comparison Table
Before diving into each platform, here is a side-by-side comparison of the top Polymarket competitors in 2026:
| Platform | Legal in US | Markets | Fees | Deposit Method | Best For |
|---|---|---|---|---|---|
| Polymarket | No | 5,000+ (politics, crypto, sports, culture) | ~2% spread | USDC (crypto) | Non-US crypto-native traders |
| Kalshi | Yes (CFTC) | 300+ (elections, economics, weather, awards) | $0.01/contract + 7% on profit | USD (bank, debit card) | US residents wanting legal access |
| Betfair | No | 10,000+ (sports, politics, entertainment) | 2-5% commission on net profit | GBP/EUR (bank, card, PayPal) | UK/EU bettors with sports focus |
| Metaculus | Yes (free) | 20,000+ questions (science, tech, policy) | Free | None (reputation-based) | Forecasters, researchers, learners |
| Manifold Markets | Yes (play money) | 100,000+ user-created markets | Free | None (play money: Mana) | Casual prediction, education |
Now let's explore each Polymarket competitor in detail, including their strengths, weaknesses, and who they are best suited for.
1. Kalshi — The Best Polymarket Alternative for US Users
Kalshi is the only CFTC-regulated prediction market exchange in the United States. Founded in 2021, it won a landmark court case against the CFTC in 2024 to offer political event contracts, making it the most direct legal alternative to Polymarket for Americans.
Pros
- Fully regulated by the CFTC — complete legal protection
- USD deposits via bank account or debit card (no crypto needed)
- Automatic 1099 tax reporting every year
- Election, economics, weather, and sports markets available
- Robinhood partnership gives access to 100M+ users
Cons
- Fewer markets than Polymarket (300 vs 5,000+)
- 7% commission on net profits can eat into returns
- KYC required — no anonymous trading
- Lower liquidity on niche markets compared to Polymarket
Kalshi vs Polymarket: Key Differences
The biggest difference is regulation. Kalshi operates under CFTC oversight, which means your funds are held in segregated accounts and you have legal recourse if anything goes wrong. Polymarket is decentralized and unregulated — offering more markets but zero consumer protections for US users.
For US-centric events like presidential elections or Federal Reserve decisions, Kalshi often has better liquidity than Polymarket because institutional traders and hedge funds participate legally on Kalshi.
Fund Your Kalshi Account via Coinbase
If you already hold crypto, you can sell it on Coinbase and transfer USD directly to your Kalshi account via bank transfer. This is the fastest way to get started:
Sell your crypto on Coinbase, withdraw USD to your bank, then deposit into Kalshi. Coinbase supports instant ACH transfers to major US banks.
2. Betfair — The World's Largest Betting Exchange
Betfair Exchange, owned by Flutter Entertainment (NYSE: FLUT), is the world's largest peer-to-peer betting exchange. Founded in the UK in 2000, it processes over $100 billion in annual volume and offers thousands of markets across sports, politics, and entertainment.
Pros
- 10,000+ markets — far more than any competitor
- Deepest liquidity for sports and political events
- Fiat deposits (GBP, EUR) via bank, card, or PayPal
- Regulated by the UK Gambling Commission
Cons
- Not available in the United States
- 2-5% commission on net profits
- Complex interface — steep learning curve for beginners
- Primarily focused on sports; fewer crypto or tech markets
Who Should Use Betfair?
Betfair is ideal for traders in the UK, Europe, and Australia who want the deepest liquidity and the widest range of sports betting markets. If you are a non-US resident interested in political prediction markets, Betfair offers UK and European election markets with excellent liquidity.
3. Metaculus — Free Forecasting for Researchers and Learners
Metaculus is a reputation-based forecasting platform where users predict outcomes on questions about science, technology, geopolitics, and policy. Unlike Polymarket, Metaculus does not involve real money — your predictions earn (or lose) reputation points.
Pros
- Completely free — no money at risk
- Legal everywhere, including the US
- 20,000+ questions spanning science, tech, and global affairs
- Strong community of expert forecasters and researchers
- Excellent for building forecasting skills before using real money
Cons
- No real-money trading — cannot earn profits
- Fewer pop culture and entertainment markets
- Reputation-only rewards may feel less motivating
Why Metaculus Matters
While you cannot earn money on Metaculus, it is one of the most accurate forecasting platforms in the world. The aggregated predictions from Metaculus have outperformed both individual experts and traditional prediction markets in several studies. If you are serious about building forecasting skills before putting real money on the line, Metaculus is the place to start.
4. Manifold Markets — Play Money Prediction for Everyone
Manifold Markets is an open-source prediction market platform where anyone can create markets on any topic. It uses a play-money currency called Mana, making it accessible to anyone regardless of location or regulatory restrictions.
Pros
- Anyone can create a market on any topic in minutes
- 100,000+ user-created markets across all categories
- Legal worldwide — play money eliminates regulatory issues
- Open source — transparent and community-driven
Cons
- Play money only — no real financial returns
- Market quality varies — many low-effort or joke markets
- Lower accuracy than Metaculus for serious questions
- Smaller user base means less liquidity on individual markets
Manifold vs Polymarket
Think of Manifold Markets as the "Reddit of prediction markets" — anyone can create a question and the community weighs in. It is excellent for testing ideas, running internal company predictions, or simply having fun. However, because there is no real money involved, the predictions tend to be less accurate than Polymarket's real-money markets.
5. PredictIt — Shutting Down (Avoid)
PredictIt was once the most popular legal prediction market in the US, operated by Victoria University of Wellington under a CFTC no-action letter since 2014. However, the CFTC revoked that letter in 2023, and PredictIt has been winding down ever since.
- August 2023: CFTC revokes no-action letter
- Q4 2025: Ceased creation of new markets
- Q1 2026: Final markets resolving; users must withdraw funds
- Recommendation: Migrate to Kalshi for legal US prediction market trading
PredictIt Limitations (Even Before Shutdown)
- $850 position limit: Capped how much you could wager per contract
- 10% withdrawal fee: One of the highest fees in the industry
- 5% trading fee: Applied to every profitable trade
- Limited markets: Primarily US politics; few international events
Which Platform Should You Choose?
The best Polymarket alternative depends on your location, goals, and experience level. Use the decision guide below to find the right fit:
You have two strong options: Polymarket for crypto-native, decentralized trading with 5,000+ markets, or Betfair for traditional betting exchange with the deepest liquidity in sports.
- - Polymarket: requires USDC on Polygon — buy crypto on Coinbase first
- - Betfair: fiat deposits via bank or PayPal (UK/EU/AU)
- - Both offer far more markets than Kalshi
Start with Metaculus or Manifold Markets. Both are free, require no deposits, and let you develop your forecasting skills without financial risk.
- - Metaculus: best for serious, research-oriented predictions
- - Manifold: best for casual, fun, community-driven markets
- - Both are legal worldwide and completely free to use
- - Graduate to Kalshi or Polymarket once you are confident
How to Invest in the Prediction Market Industry
Instead of (or in addition to) trading on prediction markets, you can invest in the underlying infrastructure. Prediction markets processed over $5 billion in volume in 2025, and the sector is growing rapidly.
Buy tokens that power the prediction market ecosystem. Available on major US exchanges without VPNs or legal concerns.
- UMA Token: Powers Polymarket's oracle and dispute resolution system
- MATIC/POL: Polygon blockchain that Polymarket runs on
- FLUT (Flutter Entertainment): Parent company of Betfair (NYSE listed)
Frequently Asked Questions
What is the best Polymarket alternative?
For US users, Kalshi is the best alternative — it is the only CFTC-regulated prediction market exchange in the country. For non-US users, Betfair offers the deepest liquidity and widest market selection. For beginners, Metaculus is the best free option to practice forecasting.
Is Kalshi better than Polymarket?
It depends on your priorities. Kalshi is better for US users because it is the only legal option, offers USD deposits, and provides tax reporting. Polymarket is better for non-US users who want more markets (5,000+ vs 300+), lower fees, and decentralized trading. For major events like US elections, Kalshi often has comparable or better liquidity.
Can I use Polymarket in the US with a VPN?
We strongly advise against this. Using a VPN to access Polymarket from the US violates both Polymarket's Terms of Service and potentially US federal law. Polymarket actively detects VPN usage and has frozen accounts with funds. Use Kalshi instead — it is legal, regulated, and does not require a VPN. Read our full guide on Polymarket's legal status in the US.
Are there any prediction markets that use real money and are legal in the US?
Yes. Kalshi is fully CFTC-regulated and available in all 50 US states. It offers markets on elections, economics, weather, and more. You can also access Kalshi markets through the Robinhood app. PredictIt was previously legal but is shutting down in 2026.
What happened to PredictIt?
The CFTC revoked PredictIt's no-action letter in August 2023, forcing it to wind down operations. As of early 2026, PredictIt has stopped creating new markets and is in the process of resolving remaining contracts. Existing users should withdraw their funds immediately. Kalshi is the recommended replacement.