Key takeaway: Prediction Today is one of several independent prediction-market comparison sites, but if you're looking to actually trade predictions, you'll want to evaluate platforms like Polymarket, Kalshi, PredictIt, and Metaculus directly. Each has different regulatory status, fee structures, and market coverage. This guide compares the major alternatives so you can choose based on your location, risk tolerance, and trading style.
What Are Prediction Market Alternatives?
Prediction markets allow you to buy and sell shares in the outcome of future events—from elections and sports to economic indicators and scientific breakthroughs. Rather than relying on a single platform, UK and international traders benefit from understanding the landscape of available options.
Prediction Today serves as an independent review and comparison resource, helping users navigate this growing ecosystem. However, the actual platforms where you trade differ significantly in their approach, regulation, user experience, and available markets. Understanding these differences is essential before committing capital.
The prediction-market sector has expanded considerably in 2026, with several established platforms competing alongside newer entrants. Each operates under different regulatory frameworks and serves distinct user bases. Some focus on real-money trading, others on play-money or academic purposes, and a few occupy a grey area that appeals to risk-tolerant traders.
Polymarket: The Largest Real-Money Platform
Polymarket remains the largest decentralised prediction market by trading volume. It operates on blockchain infrastructure and allows users to trade shares in binary outcomes using USDC (a stablecoin) or fiat deposits via third-party payment processors.
Strengths: Polymarket offers exceptional liquidity across hundreds of markets, from US politics and cryptocurrency to weather and entertainment. The platform charges a 2% fee on winnings, which is competitive. Markets are created by users, meaning the breadth of events covered is vast. The interface is relatively straightforward for experienced traders.
Limitations: Polymarket's regulatory status remains contested in the United States, and UK users face restrictions on accessing the platform directly through standard payment methods. The platform explicitly prohibits users in certain jurisdictions, though enforcement relies on geofencing and user declarations. Markets can suffer from low liquidity on niche events, making entry and exit difficult. The decentralised nature also means less traditional customer support.
Best for: Experienced traders comfortable with blockchain, those seeking deep liquidity on major events, and users outside restricted jurisdictions.
Kalshi: The Regulated US Alternative
Kalshi operates as a CFTC-regulated exchange in the United States, offering binary event contracts on elections, economic data, weather, and sports. It's one of the few platforms with explicit regulatory approval for real-money prediction trading.
Strengths: Kalshi's regulatory status provides legal clarity and consumer protections that decentralised platforms cannot match. The platform focuses on quality over quantity, with carefully vetted markets. Trading fees are transparent (typically 5% on winnings for most users, though this varies). Customer support is professional and responsive. The user interface is intuitive and designed for retail traders.
Limitations: Kalshi is available only to US residents aged 21 and over. International traders, including those in the UK, cannot access the platform. Market selection is narrower than Polymarket, reflecting Kalshi's regulatory constraints. Liquidity, whilst improving, remains lower than Polymarket on equivalent events.
Best for: US-based traders who prioritise regulatory safety and customer support over maximum market selection.
PredictIt: The Academic-Focused Platform
PredictIt, operated by Victoria University of Wellington in New Zealand, operates under a no-action letter from the US CFTC, positioning itself as an academic research platform. It remains one of the most accessible platforms for UK users.
Strengths: PredictIt allows international access, including from the UK, making it one of the few legitimate options for British traders. The platform is stable and has operated since 2014. Markets focus on politics, economics, and current events. The fee structure is straightforward: 10% on winnings and a 5% withdrawal fee. The academic framing provides some regulatory protection.
Limitations: The 10% fee on winnings is higher than Polymarket or Kalshi. Liquidity is substantially lower than Polymarket, particularly on non-US events. The platform's academic positioning means market selection is curated rather than user-driven, limiting coverage of niche events. The user interface, whilst functional, feels dated compared to newer competitors.
Best for: UK-based traders seeking a regulated, accessible entry point; those focused on political and economic forecasting; users who prioritise platform stability over cutting-edge features.
Metaculus: Play-Money and Serious Forecasting
Metaculus operates primarily as a play-money platform, though it recently introduced a real-money track in select jurisdictions. It emphasises scientific and geopolitical forecasting over entertainment events.
Strengths: Metaculus attracts serious forecasters and offers an exceptional range of scientific, technological, and geopolitical questions. The community is highly engaged and produces detailed reasoning for predictions. Play-money markets allow risk-free exploration. The platform is free to join and use. Recent expansion into real-money markets (where available) offers upside for committed users.
Limitations: Play-money markets lack the incentive structure of real-money platforms, potentially reducing forecast accuracy. Real-money access is limited to specific jurisdictions and may not include the UK. Liquidity on real-money markets is nascent. The platform's focus on serious forecasting means fewer entertainment or short-term event markets.
Best for: Forecasters interested in long-term scientific and geopolitical questions; those wanting to develop prediction skills without financial risk; academic and research communities.
Regulatory Landscape and UK Access in 2026
The regulatory environment for prediction markets remains fragmented and evolving. The UK does not explicitly prohibit prediction markets, but the Gambling Commission's jurisdiction creates ambiguity. Platforms operating from overseas generally fall outside direct UK regulation, though UK users may face restrictions from the platforms themselves.
The Financial Conduct Authority (FCA) has not issued specific guidance on binary prediction markets, treating them differently from traditional financial derivatives. This creates a grey zone where platforms like Polymarket and PredictIt operate with limited direct oversight of UK users, whilst Kalshi and some others impose strict geographic restrictions.
In 2026, several platforms have begun exploring explicit UK licensing or partnerships with regulated entities. However, as of now, UK traders typically access international platforms either directly (where geofencing permits) or through VPN services, which carries its own risks and potential violations of platform terms of service.
The regulatory trend globally is toward clearer frameworks. The European Union has proposed stricter rules, whilst some US states have moved toward legalisation. UK policy remains uncertain, making it essential to understand the legal implications before trading significant sums.
Fee Structures and Cost Comparison
Fees vary substantially across platforms and can significantly impact returns, particularly for frequent traders or those making small bets.
Polymarket: 2% fee on winnings; no deposit or withdrawal fees (though blockchain gas fees may apply depending on method).
Kalshi: Typically 5% on winnings for retail users; no deposit fees; withdrawal fees vary by method.
PredictIt: 10% on winnings plus 5% withdrawal fee; no deposit fees.
Metaculus: Free for play-money; real-money fees vary by jurisdiction but typically 2–5% on winnings.
For a £100 winning bet, fees range from £2 (Polymarket) to £15 (PredictIt with withdrawal). Over dozens of trades, these differences compound. However, fee comparison should not overshadow market quality, liquidity, and regulatory safety—a cheap platform with poor liquidity may cost you more in slippage than you save in fees.
Market Selection and Liquidity Comparison
The breadth and depth of available markets differ substantially. Polymarket offers the widest selection, with thousands of markets spanning politics, sports, cryptocurrency, entertainment, and niche topics. PredictIt and Kalshi focus on curated selections, typically 100–500 active markets. Metaculus emphasises scientific and long-term forecasting questions.
Liquidity—the ease of entering and exiting positions—is critical. On major events (US elections, major sporting events), all platforms offer reasonable liquidity. On niche markets, Polymarket generally offers better depth, though even there, small traders may face slippage. PredictIt's liquidity is notably thinner, particularly on non-US events.
For UK traders, this creates a practical challenge: the most liquid platform (Polymarket) is hardest to access legally, whilst the most accessible platform (PredictIt) offers lower liquidity. Balancing these trade-offs requires honest assessment of your trading style and capital size.
Frequently Asked Questions
Is it legal for UK residents to use prediction markets?
The legal status is ambiguous. Prediction markets are not explicitly prohibited, but the Gambling Commission's oversight creates uncertainty. Platforms like PredictIt and Metaculus allow UK access, whilst others (Kalshi) explicitly prohibit it. Using a VPN to access restricted platforms violates their terms of service and may expose you to legal risk. Consult a legal advisor if you're trading substantial sums.
Which platform is safest for beginners?
PredictIt or Metaculus (play-money) offer the safest entry points. PredictIt provides real-money trading with regulatory backing and international access. Metaculus's play-money track lets you learn without financial risk. Both have strong communities and educational resources.
Can I make consistent profits from prediction markets?
Prediction markets are not get-rich-quick schemes. Consistent profits require genuine forecasting skill, disciplined risk management, and deep knowledge of your chosen domains. Many traders lose money. Treat prediction markets as a speculative investment, not a reliable income source.
What's the minimum bet size?
Most platforms allow bets as small as £1–£5, though some markets have minimum order sizes. Smaller bets suit learning; larger positions require careful consideration of liquidity and your risk tolerance.
How do I withdraw winnings?
Withdrawal methods vary: Polymarket uses stablecoin transfers (requiring a crypto wallet); Kalshi and PredictIt offer bank transfers and other fiat methods. Processing times range from same-day (crypto) to several business days (bank transfers). Always check fees before withdrawing.
Are prediction markets rigged or manipulated?
Established platforms have strong incentives to prevent manipulation. Polymarket's blockchain infrastructure provides transparency; regulated platforms like Kalshi face compliance oversight. That said, low-liquidity markets can be vulnerable to manipulation, and no platform is perfectly secure. Start with major markets where liquidity is deep.
Making Your Choice
Selecting a prediction-market platform depends on your location, risk tolerance, trading style, and regulatory comfort. UK users face the most constraints: Polymarket offers the best markets but questionable legal status; PredictIt provides legitimate access but higher fees and lower liquidity; Metaculus offers risk-free play-money learning.
Rather than choosing a single platform, many experienced traders use multiple platforms to compare odds, access different markets, and diversify risk. However, start with one platform, learn its mechanics, and expand only once you're confident in your approach.
Prediction markets are genuinely useful for both forecasting and speculation, but they carry real financial risk. Never bet more than you can afford to lose, and approach them as speculative investments rather than reliable income sources.
For detailed, up-to-date comparisons of prediction-market platforms tailored to your location and needs, visit Prediction Today.