Data snapshot Snapshot Nov 8, 2026
Prediction Market Fees Compared: What 15 Platforms Publish
Fees are the least glamorous and most decisive number in prediction market trading. A contract bought at 62 cents that settles at a dollar grosses 38 cents before costs; what the platform takes in trading fees, and what it costs to get money in and out, decides how much of that 38 cents a trader keeps. This site tracks 15 platforms, and the first finding is that they do not publish fees in anything like a common format.
Some publish a formula, a percentage of the trade value that scales with price. Some publish a schedule in a filing. CME's event contract fees, for example, appear in its listing documents at a cent per contract on Globex. Play money platforms publish nothing because there is nothing to charge. The table quotes each platform's own published wording, shortened, with the full text on its profile page. Where no schedule was published in the data collected, the table says so rather than guessing.
| Platform | Markets tracked | Fees, as published (shortened) |
|---|---|---|
| CME Group Event Contracts | 28 | Exchange fees in CME listing filings: CME Globex $0.01 per contract for members and non members, cash settlement $0.00; position adjustment or transfer $0.10 and give up surcharge $0.05 i... |
| DraftKings Predictions | 0 | DraftKings charges a $0.01 transaction fee for each event contract bought or sold, plus a separate exchange fee; its fee schedule gives CME markets total fees of $0.01 per contract at pri... |
| FanDuel Predicts | 0 | No fee schedule published in the data collected. |
| ForecastEx | 35 | Interactive Brokers pricing: ForecastEx forecast contracts USD 0.00 commission per contract plus third party exchange fee USD 0.01 per contract |
| Kalshi | 456 | Taker fee formula fees = round up(0.07 x contracts x price x (1 minus price)); peaks at $1.75 per 100 contracts at $0.50; maker fee formula uses 0.0175 where charged; no settlement fee an... |
| Limitless | 28 | AMM markets flat 0.40 percent on all trades; order book takers pay buy fees of 0.40 percent to 3.00 percent in outcome tokens and sell fees of 0.42 percent to 1.50 percent in USDC; makers... |
| Manifold | 89 | No fee schedule published in the data collected. |
| Metaculus | 0 | No fee schedule published in the data collected. |
| Myriad Markets | 23 | Order book fees apply to takers only, with a peak fee rate of 1.5 percent at $0.50 decaying linearly to zero at the extremes, and makers pay no fees and receive rebates; AMM markets charg... |
| Opinion | 0 | Fees apply to the taker only and makers are not charged; fees range from 0 percent to 1 percent on a topic_rate x price x (1 minus price) curve, highest near a 50 percent price, with a $0... |
| PancakeSwap Prediction | 0 | Participation fee of 3 percent of each round total prize pool; the Prediction FAQ says 3 percent of each round total pot goes to the treasury, of which 100 percent is used to buy back and... |
| Polymarket | 410 | Taker fee rate by category in docs: Finance 0.04, Economics 0.05, Crypto 0.07, maker fee rate 0; fee peaks at $1.00 per 100 Finance shares at $0.50; no Polymarket fees to deposit or withd... |
| Polymarket US | 0 | Standard taker fee Fee = theta x contracts x price x (1 minus price) with theta 0.0695, max $1.74 per 100 contracts at $0.50; tiered taker coefficients run from 0.095 below $10,000 traili... |
| Predict.fun | 0 | Makers pay no fee; takers pay from 0.018 percent to 2 percent depending on share price, calculated as base fee 2 percent x min(price, 1 minus price) x shares, peaking at $1.00 per 100 sha... |
| Robinhood Event Contracts | 29 | From June 1 2026 commission = k x price x (1 minus price) x contracts, where k is 10 percent without Gold or 5 percent with Gold, rounded up to the nearest $0.01 and capped at $0.01 per c... |
The second finding is scale. The chart counts markets tracked per platform in the finance dataset, and the spread is wide: Kalshi at 456 markets and Polymarket at 410 account for most of the book, with a long tail of venues listing dozens or fewer. Fee competition matters most where a trader has a real choice of venue for the same event, which today means the big two and a handful of overlaps.
The fee question connects to a wider honesty problem in this industry: headline prices are quoted gross everywhere and net nowhere. A market maker can shade a price by a cent and call it the market; a platform can advertise zero commissions while the spread does the charging. Prediction markets are unusually transparent by the standards of retail trading, since the price is the product and both sides of it print in public. That transparency is exactly why the remaining opacity, the fee schedules, deserves a comparison table. Traders who read the schedules before the prices make better decisions than traders who read them after the settlement.
Withdrawal and deposit costs sit outside the dataset and outside most fee pages' headlines, and they belong in any trader's real arithmetic, especially for small stakes where a fixed cost swamps a formula fee. The profiles here link to each platform precisely so those schedules can be read at the source. What the comparison establishes is the shape of the field: which platforms compete on a published formula, which bury costs in filings, and which, being play money, are honest about charging nothing because nothing is at stake.
Before trading anywhere, read the platform's current fee page, not this snapshot of it. Fees change, promotions come and go, and the profile pages here link to each platform so the current schedule is one click away. What this comparison gives you is the map: which venues charge, how they describe it, and where the honest answer is that nothing was published.
Snapshot data: prices and volume were collected from the platform on Nov 8, 2026. They are dated snapshots, not live quotes. Use the live market link for current prices.