Best Prediction Markets in 2026: 17 Platforms Compared (Regulation, Fees, Access and Who Each Suits)

What CoinRithm's Live Data Adds

Most "best prediction markets" lists stop at fees and features. CoinRithm aggregates all twelve venues it tracks into one database, so we can also show how big each catalog is and how accurate each venue's prices have been. Catalog counts are a snapshot from September 23, 2026. Calibration figures were recomputed on September 29, 2026, after we corrected how ladder markets (books where several outcomes can resolve Yes) are scored. The linked pages update continuously.

How to read it:

• Open events come from the prediction market source comparison. They measure catalog breadth, not trading volume. Smarkets and Metaculus counts cover only the part of each venue CoinRithm ingests.
• Calibration error comes from the venue calibration report. It asks: when a venue priced an outcome at 70% one day before resolution, how often did it happen? The number is the average gap in percentage points (expected calibration error), so lower is better. Kalshi's 1.32 points was the lowest of any venue with enough data (five qualified), with Polymarket next at 2.47.
• Sample sizes differ a lot. Gemini's figure rests on 48 events and Limitless's on 119, so treat them as early readings. Markets without a price snapshot 20 to 28 hours before resolution, including most same-day markets, are excluded. Futuur has a separate final-price series (3.07 points across 143,952 resolved markets since 2017) that is not comparable with the 24-hour figures.

Same question, different venues. The live comparison page matched 1,793 questions listed on two or more venues on September 23, 2026. On the busiest ones, prices lined up closely: the 2026 Ballon d'Or market had Harry Kane at 58% on Polymarket, 58% on Kalshi and 59% on Manifold, and Lamine Yamal at 22%, 24% and 23%. Thinner markets drift further apart, and the page's Divergence view ranks those gaps. The practical lesson: on big questions, pick a platform for access, fees and funding rather than for a better price, and compare venues before trading smaller markets. Matching labels do not guarantee identical contract rules, so read each venue's rules before acting on a gap.

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The 17 Best Prediction Market Platforms in 2026

1. Kalshi

Best for: US traders who want the broadest regulated market list, and eligible traders in many other countries

Kalshi is a Designated Contract Market regulated by the US Commodity Futures Trading Commission (CFTC), and it clears trades through its own clearinghouse, Kalshi Klear. It lists markets on politics, sports, economics, weather, culture, crypto and more. Kalshi says its contracts are governed by federal rather than state law; how states treat sports contracts is still a live legal question, and some brokers that route to Kalshi exclude specific states (Coinbase excludes Nevada). See our state-by-state guide.

• Who can use it: US users aged 18+. Since 2026, users in many other countries too, except those on the restricted list in its Member Agreement, which includes the UK, Canada, France, Italy, Ireland, Australia, Switzerland, Poland, Portugal, Singapore and India. The list does not name Germany, Spain or the Netherlands, but regulators there treat unlicensed prediction markets as illegal or have opened proceedings, so check local rules first. Canadian residents can reach some Kalshi contracts (economics, financial markets, climate) through Wealthsimple Predict, a separate Canadian app announced in June 2026.
• Trading fees: takers pay 0.07 x contracts x price x (1 - price), rounded up. That is $1.75 on 100 contracts at 50¢ and $0.07 at 1¢ or 99¢. Some series also charge maker fees. There are no settlement or membership fees (fee schedule, effective July 7, 2026).
• Funding: debit card (including Apple Pay and Google Pay), bank transfer (ACH), PayPal, Venmo, Cash App (deposits only), crypto and wire. The minimum deposit is $10 ($1,000 by wire). ACH is free; card deposits may carry a fee of up to 2%. International accounts deposit by debit card, crypto or wire and withdraw by debit card or crypto.
• Extras: a variable 3.25% APY on cash and open positions for eligible US users with at least $250, and perpetual futures on 18 crypto assets and 2 metals for approved US users.
• Settlement: most markets settle within about three hours of the official result.
• On CoinRithm: 12,991 open events tracked; 1.32-point calibration error across 1,400 scored events, the lowest in our report. Browse the Kalshi page or read What Is Kalshi? and Kalshi Fees Explained.

Watch out for: the restricted-country list if you are outside the US, and the card deposit fee if you fund by debit card.

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2. Polymarket

Best for: crypto users outside the restricted countries who want the widest global market list

Polymarket.com is the international, crypto-based version of Polymarket. It is non-custodial, runs a central limit order book on the Polygon blockchain, and uses pUSD, a token backed by USDC, as collateral for all trading. Markets resolve through the UMA Optimistic Oracle, where a proposed outcome can be disputed and, if needed, voted on.

• Who can use it: anyone outside its restricted list. As of August 14, 2026, Polymarket names 39 blocked countries, including the US, UK, Germany, France, Italy, the Netherlands, Ireland, Belgium, Poland, Australia, Japan and Brazil, plus four Canadian provinces (Alberta, British Columbia, Ontario and Quebec). Singapore, Poland, Thailand and Taiwan are close-only (you can close positions but not open new ones). Access is based on physical location, and VPN use breaks its terms.
• Trading fees: only takers pay, at a rate set by category: 0 for geopolitics and world events, 0.04 for politics, finance, tech and mentions, 0.05 for sports, economics, culture and weather, and 0.07 for crypto. On 100 shares at 50¢ that is $1.00 (politics), $1.25 (sports) or $1.75 (crypto). Makers never pay (fee docs).
• Funding: send crypto from Ethereum, Polygon, Arbitrum, Base, Optimism, BNB Smart Chain, Solana, Bitcoin, Tron and other networks; it converts to pUSD automatically. Minimums are $2 on most networks, $7 on Ethereum and $9 on Bitcoin and Tron. Polymarket charges no deposit or withdrawal fee, but on-ramps such as Coinbase or MoonPay may.
• On CoinRithm: 15,809 open events tracked, the largest real-money catalog we cover; 2.47-point calibration error across 1,016 scored events, the second lowest in our report. See the Polymarket page, What Is Polymarket? and Polymarket Countries and Availability.

Watch out for: the block list (it changed a lot in 2026) and category fees on crypto and sports markets.

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3. Polymarket US

Best for: US residents who want Polymarket's markets in a regulated, dollar-funded app

Polymarket US is operated by QCX LLC, a CFTC-regulated Designated Contract Market, and is a completely separate product from polymarket.com. Polymarket's help center is explicit: US residents must use the Polymarket US app, and accounts are not connected.

• Who can use it: US residents aged 18+ who pass identity verification.
• Markets: sports, politics (including a 2026 midterms hub), crypto, weather, tech, culture and economics categories on polymarket.us.
• Trading fees: takers pay 0.0695 x contracts x price x (1 - price), at most $1.74 on 100 contracts at 50¢. Makers receive a rebate, $0.31 on the same trade (fee schedule, effective September 17, 2026).
• Funding: debit card, bank transfer (ACH) and wire ($1,000 minimum). Withdrawals are free; card and ACH take 3 to 4 business days, wire 1 business day.
• Limits: Polymarket US says it sets no trading size limits; large orders simply fill against what is on the book.

Watch out for: it is not the same account or the same market list as polymarket.com.

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4. Robinhood Prediction Markets

Best for: existing Robinhood customers who want event contracts next to their stocks and crypto

Robinhood offers event contracts through Robinhood Derivatives, a registered futures commission merchant, and sends orders to KalshiEX, ForecastEX or Rothera Exchange and Clearing. Rothera is a CFTC-licensed exchange and clearinghouse run by a joint venture of Robinhood and Susquehanna International Group; Robinhood began routing World Cup and baseball contracts there in June 2026. Robinhood says over 12 billion event contracts traded on its platform in 2025 and over 16 billion in 2026 through early June.

• Who can use it: US residents aged 18+ with an individual brokerage account. Maryland residents cannot trade sports event contracts, and Nevada residents cannot open new sports positions (since December 1, 2025).
• Fees: since June 1, 2026, the commission is 10% x price x (1 - price) x contracts, or 5% with Robinhood Gold ($5 a month), capped at 1¢ per contract. Exchanges add up to 1¢ per contract. At 50¢ the cap applies either way: $1.00 commission on 100 contracts plus the exchange fee (Robinhood help).
• On CoinRithm: 291 open Robinhood (Rothera) events tracked. See the Rothera page and What Is Rothera?.

Watch out for: it is no longer commission-free, and state limits apply to sports contracts.

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5. Coinbase

Best for: US Coinbase customers who want to trade Kalshi markets with USD or USDC

Coinbase offers prediction markets through Coinbase Financial Markets, and the markets themselves are operated by Kalshi, which also decides outcomes.

• Who can use it: US residents only, excluding Nevada.
• Funding: settled USD or USDC in your Coinbase account.
• Fees: shown in the order confirmation before you trade; Coinbase does not publish a fixed rate on its help page.

Watch out for: it is Kalshi's market list in a Coinbase wrapper, so compare the all-in cost with trading on Kalshi directly.

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6. Interactive Brokers (ForecastEx, Kalshi and CME)

Best for: investors who want event contracts beside stocks and futures, including some clients outside the US

Interactive Brokers lists event contracts from ForecastEx (its affiliate, a CFTC-registered exchange and clearinghouse), Kalshi and CME Group in one platform.

• Who can use it: eligible clients aged 21+ of Interactive Brokers LLC, Interactive Brokers Canada, Interactive Brokers Hong Kong, Interactive Brokers Ireland and Interactive Brokers Singapore. US election contracts are only for eligible US residents.
• Fees (US pricing): ForecastEx contracts have no commission, only a 1¢ exchange fee per contract ($1.00 on 100). Kalshi and CME event contracts cost 1¢ commission plus 1¢ exchange fee (IBKR pricing).
• Extra: ForecastEx positions earn an incentive coupon, currently 3.38% APY, accrued daily and paid monthly.
• On CoinRithm: 4,350 open ForecastEx events tracked. See the ForecastEx page and What Is ForecastEx?.

Watch out for: the 21+ age rule and a brokerage account setup that is heavier than a betting-style app.

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7. Gemini Predictions

Best for: US crypto investors who already hold a Gemini account

Gemini Predictions is a CFTC-regulated event-contract exchange run by the Gemini crypto exchange.

• Who can use it: US users only, trading from their USD balance with limit orders, 24/7.
• Fees: for contracts listed from March 18, 2026, takers pay 0.07 x contracts x price x (1 - price) and makers 0.0175 x the same, rounded up to the next cent. That is $1.75 for a taker buying 100 contracts at 50¢ (fee schedule).
• On CoinRithm: 625 open events tracked; many are short crypto-price contracts that open and settle quickly. See the Gemini page and What Is Gemini?.

Watch out for: Gemini stopped operating in the UK and Europe on April 6, 2026, so it is not an option there.

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8. PredictIt

Best for: US politics fans who trade small amounts

PredictIt is a politics-focused market run as a project of the not-for-profit Prediction Market Research Consortium, with Aristotle International handling verification and clearing. It operates under a CFTC no-action letter granted in October 2014.

• Who can use it: U.S. persons aged 18+, meaning US citizens living anywhere or resident aliens.
• Limits: up to $3,500 in any single contract.
• Fees: 10% of your profit when you sell above cost or a contract pays out; no fee on losing or break-even trades; no fee on standard withdrawals. Credit card deposits cost 3%, except the first deposit up to $1,000; bank transfers are free.
• On CoinRithm: 193 open markets tracked. See the PredictIt page and What Is PredictIt?.

Watch out for: a 10% profit fee is the highest headline rate here on a winning trade, and the market list is mostly US politics.

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9. DraftKings Predictions

Best for: DraftKings customers who want sports, stock market and crypto event contracts

DraftKings Predictions is run by a CFTC-registered broker and lists markets from Crypto.com | Derivatives North America (CDNA), DraftKings' own DKeX exchange and CME. Markets include NFL, college football, NBA, NHL, college basketball, the stock market, Bitcoin and Ether prices.

• Who can use it: you must be physically located in a US state where markets are offered, in Washington, D.C. or a US territory, and not on tribal land. Availability varies by state and by market type.
• Fees: all-in fees of up to 2¢ per contract per side on CDNA and DKeX markets priced between 30¢ and 94¢, and 1¢ to 2¢ on CME markets (fee disclosure).

Watch out for: fees apply on both opening and closing trades.

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10. FanDuel Predicts

Best for: FanDuel customers, especially where FanDuel's sportsbook is not available

FanDuel Predicts is the app of FanDuel Prediction Markets, a joint venture of FanDuel Group and CME Group. Contracts are listed by CME Group exchanges, and accounts are held at a registered futures commission merchant. You must be 18+.

• Where: FanDuel's state map lists Predicts across US states and says the app offers prediction markets in all states where its sportsbook is not available.
• Fees: two cents per dollar of potential payout, so a $100 potential payout costs $2. The same fee applies if you cash out early.

Watch out for: the fee is based on the potential payout, not the price you pay.

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11. Fanatics Markets

Best for: sports fans in the states where it is live

Fanatics Markets is operated by Morton St. Trading Investments, LLC, a CFTC-registered futures commission merchant, and offers contracts through Crypto.com | Derivatives North America.

• Where: live in 22 states (Alabama, Alaska, California, Delaware, Florida, Georgia, Hawaii, Idaho, Maine, Minnesota, Mississippi, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, Oregon, Rhode Island, South Carolina, South Dakota, Texas and Utah) and 4 territories.
• Fees: a trading fee between $0.00034 and $0.02 per contract, highest near 50¢ (effective September 2, 2026). Debit card, Apple Pay, PayPal and Venmo deposits may cost up to 2%; ACH deposits and all withdrawals are free.

Watch out for: availability is limited to the listed states and territories.

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12. Limitless

Best for: crypto traders who want fast crypto-price markets on-chain

Limitless is a crypto prediction market on Base, an Ethereum layer 2, with USDC as collateral. It is operated by Street Chow Inc., a Panamanian company. It runs both order-book and AMM markets, many on hourly and daily crypto prices. Most markets resolve automatically through Pyth Network price feeds; short crypto up/down markets use Chainlink averages; event markets are resolved manually, typically within 24 to 72 hours.

• Who can use it: users 18+ outside its restricted list. Its terms (updated September 15, 2026) say it is not available for trading in the United States, "Republic of China" and the Canadian provinces of Ontario and Alberta, and it blocks sanctioned regions.
• Fees: makers pay nothing. On order-book markets, taker buys cost 0.40% to 3.00% (3.00% at prices up to 50¢) and sells 0.42% to 1.50%. AMM markets charge a flat 0.40% (fee docs).
• On CoinRithm: 383 open events tracked; 10.12-point calibration error across 119 scored events. See the Limitless page and What Is Limitless?.

Watch out for: a 3% buy fee on cheaper contracts adds up if you trade often as a taker.

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13. Smarkets

Best for: UK users who want a licensed exchange for politics and current affairs

Smarkets is a betting exchange rather than a contract market. Its exchange and sportsbook are licensed by the UK Gambling Commission (licensee Smarkets (Malta) Limited), and it also holds licences in Malta, Ireland and Sweden.

• Who can use it: 18+. Its terms bar residents of, or people located in, countries including the US, France, Italy, Portugal, the Netherlands, Belgium, Turkey, Australia and Switzerland.
• Fees: 2% commission on net winnings per market on the Standard Tier, so a £50 even-money bet that wins pays £1. No commission if you lose on a market.
• On CoinRithm: we track its politics and current-affairs markets (100 open events). See the Smarkets page, What Is Smarkets? and Prediction Markets in the UK.

Watch out for: odds are shown in betting-exchange format, not as contract prices.

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14. Myriad

Best for: crypto users who like small, fast on-chain markets

Myriad is an on-chain prediction market with a non-custodial wallet. You can deposit USD1 on BNB Smart Chain or other crypto (minimum $3, powered by MoonPay). It runs both AMM and order-book markets and also has points-based play.

• Fees: AMM buys cost 0% to 2% depending on the market, plus $0.0085 per transaction for gas. On order-book markets only takers pay; makers are fee-free and earn rebates.
• On CoinRithm: 39 open events tracked. See the Myriad page and What Is Myriad?.

Watch out for: small pools move a lot on one trade, and its docs do not publish a country list.

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15. Futuur

Best for: Latin American users and anyone who wants to practice with play money

Futuur runs play-money markets with its Ooms currency for anyone, and real-money markets in crypto. It is operated by Futuur Anjouan Ltd. under a gaming licence from the Autonomous Island of Anjouan (Comoros).

• Who can use real money: not residents of its restricted list, which includes the US, UK, Canada, Germany, France, Italy, the Netherlands, Japan and Australia. Play money is open everywhere.
• On CoinRithm: 609 open events tracked, and a long resolved history: 143,952 markets since 2017 in our final-price calibration series (3.07 points). See the Futuur page and What Is Futuur?.

Watch out for: switch carefully between play-money and real-money modes; prices mean different things.

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16. Manifold

Best for: free practice and questions no real-money venue lists

Manifold uses mana, a play-money currency that cannot be converted to cash. Everyone starts with 1,000 mana for free, anyone can create a market, and Manifold runs regular prize drawings paid in USDC that you can enter for free.

• On CoinRithm: 16,101 open events tracked, the most of any venue, and a 4.47-point calibration error across 191 scored events. See the Manifold page and What Is Manifold?.

Watch out for: play money is a weaker signal than real money on thin markets.

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17. Metaculus

Best for: long-range science, technology and AI questions

Metaculus is a forecasting platform and aggregation engine run as a public benefit corporation. You submit probabilities instead of trading contracts, and the Community Prediction is a recency-weighted median of forecasts. Tournaments award cash prizes to the most accurate forecasters.

• On CoinRithm: Metaculus limits which questions its API returns, so we show only a small permitted slice. See the Metaculus page and What Is Metaculus?.

Watch out for: there is no money to win or lose outside tournaments.

Also worth watching

Problyx is a free-to-play social prediction app that uses points instead of money. Markets typically show trader counts in the hundreds, it now has iOS and Android apps, and it publishes a developer API page. It is a low-stakes way to practice.

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Fee Comparison: What a $50 Position Costs

The fairest like-for-like test is buying 100 contracts at 50¢ (a $50 position) as a taker, the most expensive price point on formula-based venues. All figures come from each platform's published schedule as of September 23, 2026.

Key takeaways:

• Formula venues cost the most at 50¢ and the least near 1¢ or 99¢. A 90¢ contract on Kalshi costs $0.63 per 100 instead of $1.75.
• Resting limit orders are the cheapest way to trade on Polymarket, Limitless and most Kalshi markets, and they earn a rebate on Polymarket US.
• Funding costs matter too. Card deposits cost up to 2% on Kalshi and Fanatics Markets and 3% by credit card on PredictIt; bank transfers are free on all three.
• For the full breakdown, read the Prediction Market Fees Comparison.

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Which Platform Is Right for You?

By location

By goal

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Regional Availability Guide

If country access is your main question, use this table with the prediction market availability page, which shows the official evidence for each trading venue we track in 20 countries.

Sources: Kalshi Member Agreement (Restricted Jurisdictions, September 20, 2026) and Kalshi's international sign-up help page, Polymarket geographic restrictions page (updated August 14, 2026), Limitless terms (updated September 15, 2026), Smarkets terms (version 4.14, August 14, 2026), Smarkets licensing page and the regulator notices named below.

* Cells marked "*" rest on more than the platform's own list, as of September 23, 2026:

• Available*: Kalshi and Polymarket say they are open internationally except the countries on their restricted lists. Mexico is on neither list, and Japan is not on Kalshi's. Smarkets holds an exchange licence for Ireland from Ireland's Gambling Regulatory Authority (GRAI).
• Restricted*: neither Kalshi nor Polymarket lists Spain, but Spain's gambling regulator (DGOJ) opened sanction proceedings against both in May 2026. Polymarket does not list India, but an Indian government (MeitY) advisory of April 25, 2026 restricts it there.
• Not verified*: the platform does not list the country, but local rules or reports point the other way, so access is not confirmed either way. In Germany, the gambling regulator (GGL) says unlicensed prediction markets are illegal, and in the Netherlands the regulator (Ksa) treats them as illegal gambling. Brazil banned event contracts on politics, sports and entertainment from May 2026. In Turkey, blocks of kalshi.com and polymarket.com are reported but not confirmed by an official record.

Read this table correctly

• Restricted, Blocked or Close-only means the platform's own terms or help center name that country or region.
• Not listed means the platform's restricted list does not name it. That is not a promise of access or legality: local law may still prohibit trading, and platforms can refuse accounts at their discretion.
• PredictIt is not in the table because its rule is about who you are, not where you are: only U.S. persons aged 18+ (US citizens anywhere or resident aliens) can trade.
• US-only platforms (Polymarket US, Robinhood, Coinbase, Gemini and the sportsbook apps) are not available outside the US. Futuur's real-money markets are restricted in countries including the US, UK, Canada, Australia, Germany, France, the Netherlands, Spain, Italy, Singapore, the UAE, Japan and Turkey.

For more detail, read Polymarket Countries and Availability, Prediction Markets in Europe and Are Prediction Markets Legal in the US?.

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What Is Driving Prediction Market Volume in Late 2026

• US midterm elections on November 3, 2026. Kalshi, Polymarket US and PredictIt all run dedicated midterm markets on House and Senate control. See Election Prediction Markets.
• The NFL and college football seasons. Sports now make up a large share of listings on Kalshi, Polymarket US and the sportsbook apps. See Sports Prediction Markets.
• Crypto price contracts. Hourly and daily Bitcoin and Ether contracts run around the clock on Kalshi, Limitless, Gemini and Polymarket. See Crypto Price Prediction Markets.
• Economic data. Fed decisions, inflation and jobs releases list on Kalshi, ForecastEx and CME event contracts. See Economics and Fed Prediction Markets.

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How to Use CoinRithm to Choose and Research

CoinRithm is a free research and paper trading platform, not a broker. It aggregates twelve venues, so you can check a question everywhere it trades before you open an account anywhere.

1. Browse CoinRithm Prediction Markets by category, volume or trend.
2. Compare the same question across venues on the live comparison page, and use its Divergence view to spot the biggest gaps.
3. Check accuracy on the calibration report and catalog size and data health on the source comparison.
4. Confirm access on the availability page before you sign up.
5. Watch large traders on the whale tracker, where venues publish trade data.
6. Read the resolution rules on the venue itself. That is where most avoidable losses start; see Common Prediction Market Mistakes.

Practice before you commit money. CoinRithm paper trading lets you stake mock USD on real prediction market events (minimum mock stake $10), alongside crypto spot and futures paper trading with $50,000 in virtual USDT. You can also let an AI agent paper trade on a free 50,000 mUSD account across spot, futures and prediction markets. No real money is traded on CoinRithm, and paper results do not guarantee real-money results.

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Frequently Asked Questions

What is the best prediction market platform in 2026?

For US residents, Kalshi is the best all-round choice: a CFTC-regulated exchange with the broadest market list and bank, card, PayPal, Venmo or crypto funding. Outside the US, Polymarket has the largest global catalog if your country is not on its 39-country block list, and Kalshi now accepts users from many countries too. UK users usually choose Smarkets, a UK Gambling Commission-licensed exchange.

What are the most famous prediction market platforms?

Kalshi and Polymarket are the best-known prediction markets and the two largest real-money venues CoinRithm tracks, with 12,991 and 15,809 open events on September 23, 2026. After them come broker apps such as Robinhood, Coinbase and Interactive Brokers, sportsbook apps from DraftKings, FanDuel and Fanatics, PredictIt for US politics, and free forecasting sites Manifold and Metaculus.

Which prediction markets are regulated in the US?

Kalshi, Polymarket US, Gemini Predictions, ForecastEx and Rothera are CFTC-regulated exchanges. Robinhood, Coinbase, Interactive Brokers, DraftKings, FanDuel and Fanatics are brokers or apps that route orders to regulated exchanges such as Kalshi, CME or Crypto.com's US derivatives exchange. PredictIt operates under a CFTC no-action letter from 2014. Polymarket.com, Limitless and Smarkets are not available to US users.

Can I use Polymarket or Kalshi in the UK, Canada or Europe?

Mostly no. Polymarket.com blocks the UK, Germany, France, Italy, the Netherlands, Ireland and Belgium, plus Alberta, British Columbia, Ontario and Quebec in Canada. Kalshi restricts the UK, Canada, France, Italy, Ireland, Belgium, Poland and Portugal. Its list does not name Germany, Spain or the Netherlands, but Spain's regulator (DGOJ) opened proceedings against Kalshi and Polymarket in May 2026, and the German (GGL) and Dutch (Ksa) regulators treat unlicensed prediction markets as illegal. UK users can use Smarkets; Canadians can use Interactive Brokers or Wealthsimple Predict.

Which prediction market has the lowest fees?

On a $50 position (100 contracts at 50 cents), Polymarket charges nothing on geopolitics markets and $1.00 on politics, while ForecastEx through Interactive Brokers costs $1.00 in exchange fees. Kalshi, Polymarket US and Gemini charge about $1.75 as a taker. Posting limit orders instead of taking liquidity is free on Polymarket, Limitless and most Kalshi markets.

Which prediction markets accept USDT deposits?

Polymarket.com accepts USDT from several networks, including Ethereum, Tron, BNB Smart Chain, Solana, Arbitrum and Base, and converts it to pUSD automatically; minimums are $2 on most networks and $9 on Tron. Kalshi accepts crypto deposits from international users. Several Asian countries, including Japan, Singapore, Thailand and Taiwan, are blocked or close-only on Polymarket, so check its list first.

Which prediction market is the most accurate?

On CoinRithm's calibration report, which compares prices one day before resolution with what actually happened, Kalshi had the smallest average error on September 29, 2026: 1.32 percentage points across 1,400 events, with Polymarket next at 2.47 across 1,016. Manifold scored 4.47 points. The report scores only markets with a single winner, so ladder markets are left out. Sample sizes and market mix differ by venue, so treat the ranking as a guide rather than a verdict.

Do I need crypto to use prediction markets?

No. Kalshi, Polymarket US, Robinhood, Interactive Brokers, Gemini, PredictIt and the sportsbook apps all take US dollars by bank transfer or card, and Coinbase accepts USD or USDC. You need crypto for Polymarket.com, Limitless, Myriad and Futuur's real-money markets. Kalshi also accepts crypto deposits if you prefer them.

What is the minimum to start trading on a prediction market?

Kalshi's minimum deposit is $10, or $1,000 by wire. Polymarket.com accepts deposits from $2 on most networks. Myriad's crypto deposits start at $3. Contract prices run from 1 cent to 99 cents, so small positions are possible almost everywhere. Manifold and Metaculus are free, and CoinRithm's paper trading lets you practice with mock stakes from $10.

Can I practice prediction market trading without real money?

Yes. Manifold gives every user 1,000 mana of play money, Futuur offers play-money markets worldwide, and Problyx is a free-to-play points app. On CoinRithm you can paper trade real prediction market events with mock USD, or let an AI agent paper trade for you, and compare your results with live odds from twelve venues before risking money anywhere.

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Conclusion

In September 2026, the best prediction market is the one you can legally use from where you live, with the fee structure and funding method that fit how you trade. For most US residents that is Kalshi, or Polymarket US if you want Polymarket's markets. Outside the US, Polymarket.com has the largest catalog but a long block list, and Kalshi is the main fiat alternative. UK users should look at Smarkets, and Canadians at Interactive Brokers or Wealthsimple Predict.

Before you open any account:

1. Check the platform's own restricted-country list and our availability page.
2. Compare the all-in fee at the prices you actually trade, and use limit orders where makers trade free.
3. Read the resolution rules for every market.
4. Practice with play money or CoinRithm paper trading, and only ever trade money you can afford to lose.

Keep reading:

• Head to head: Kalshi vs Polymarket
• Alternatives: Polymarket Alternatives and Kalshi Alternatives
• Costs: Prediction Market Fees Comparison
• Legality: Are Prediction Markets Legal in the US?
• Accuracy: How Accurate Are Prediction Markets?
• New to the category: What Are Prediction Markets in Crypto?
• Step by step: How to Use Polymarket and How to Use Kalshi

Browse by platform on CoinRithm: Polymarket · Kalshi · Metaculus · PredictIt · Limitless · Manifold Markets · Smarkets · Robinhood (Rothera) · Futuur · Myriad · ForecastEx · Gemini

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Last updated: September 29, 2026

Disclaimer: This article is for educational and informational purposes only. It is not financial, legal or investment advice. Prediction markets involve financial risk, and you can lose your entire stake. Check the legal status of prediction markets where you live before participating, and only trade money you can afford to lose. Platform features, fees and availability change often; always confirm current details with each platform before trading. CoinRithm offers research and paper trading only and does not execute real-money trades.