What works
- Deepest slate of pure political markets, per Casino.org
- Per-contract limit raised from $850 to $3,500 in 2025
- Trader cap of 5,000 per market was cancelled in 2025
- No deposit fee and no per-trade commission
- Survived a CFTC shutdown order and won in court in July 2025
What does not
- 10% fee on net profit per market plus 5% on withdrawals
- 30-day hold from first deposit before any withdrawal
- No native iOS or Android app; mobile website only
- Politics only: no sport, crypto or entertainment contracts
- Support is an email form: no live chat or phone line
Start with the bill. A PredictIt trader who buys a "Yes" share at 60 cents, wins, and takes the money out does not collect 40 cents of profit. The platform keeps 10% of the gain at settlement, then 5% of whatever leaves the account. On our arithmetic the 40 cents shrinks to about 31 cents. Whether PredictIt is worth using in 2026 depends on how you feel about that haircut, and on whether you want the one thing it still does better than newer rivals: a deep list of purely political markets.
A note on method. PredictIt's own site returned HTTP 403 (blocked) to our test machine, so we could not open an account or trade. The facts below come from Wikipedia and from a long review by Casino.org, and we name which is which. The fee sums are ours.
How the market works
Every contract is a yes or no question, such as who controls the Senate after the 2026 midterms. Shares trade between 1 and 99 cents and a correct share redeems for $1. Casino.org lists the live book as politics only: Congress, presidential and congressional approval, cabinet and judicial nominations, governors and mayors, and a smaller slate on UK and EU politics. There is no sport, crypto or entertainment.
PredictIt began on 3 November 2014 as an academic project of Victoria University of Wellington, in New Zealand, with Aristotle running operations from Washington, D.C. Its legal permission was a staff no-action letter from the CFTC.

Why the limits changed
That letter capped each trader at $850 per question and each market at 5,000 traders. Then, on 4 August 2022, the CFTC withdrew the letter, saying the university had not run the platform within its terms, and told PredictIt to close all positions by 15 February 2023. PredictIt sued. The Fifth Circuit granted an injunction on 26 January 2023, and Wikipedia reports that PredictIt won the case in July 2025.
The result, per Wikipedia and Casino.org, is a new arrangement in 2025: a nonprofit, the Prediction Market Research Consortium, took over the research side, the per-contract cap rose from $850 to $3,500, and the 5,000-trader cap was cancelled. Casino.org dates the amended letter (No. 25-20) to July 2025. The two sources disagree on the legal footing afterward. Wikipedia mentions a 5 September 2025 approval to operate as a regulated derivatives exchange. Casino.org, in its review, still describes PredictIt as operating under a no-action letter and not as a full exchange. We cannot settle that from here, so check the platform's current notice.
The $3,500 figure is a per-contract limit, not a cap on your total. It is high enough to matter to a serious political bettor and too low to take a large position in a single race.

What it costs
The schedule, as Casino.org prints it: 10% of net profit per market, charged at settlement; 5% on withdrawals; no deposit fee and no per-trade commission. A losing position costs only the stake, so the 10% bites only the winners. That fits the sums above, and it explains the review's judgment that this is one of the higher effective costs among regulated prediction markets.
Two practical consequences follow. First, a trade needs a bigger move than it would elsewhere to be worth making, so frequent in-and-out trading is a poor fit. Second, Casino.org describes the 10% as applying to net profit per market, so if that holds, gains and losses on different contracts within one market should net against each other before the fee is taken. We would confirm that in PredictIt's own fee notice before relying on it.

Getting money in and out
Funding is by credit or debit card or by cash through PayNearMe, with a $10 minimum. Withdrawals go by ACH or mailed check, with a $10 minimum and the 5% fee. International traders may request a wire for an extra $40.
The detail that catches newcomers is the hold. Casino.org says no withdrawal is available until 30 days after the first deposit (60 for international traders), and then about a week to arrive. If you may need the money back within a month, do not deposit it.
There is no iOS or Android app. The site is mobile-responsive and Casino.org says a March 2026 redesign improved it. Support is by email form and a help center, with no live chat and no published phone line.

Who should use it
Casino.org scores PredictIt 3.5 out of 5, and we land a little above that because the product does one job well. It suits someone who wants to trade political outcomes, accepts the 10% and 5% fees as the price, and can leave money in for a month. It does not suit anyone who trades sport, wants quick withdrawals, or expects to flip positions many times a day.
Treat any price as a crowd's guess, not a promise. Prediction markets can lose you money, and you should only stake what you can afford to lose. Check the age and residency rules before you register. If trading starts to feel compulsive, call 1-800-GAMBLER.
Aristotle Inc.: the facts
- Maker
- Aristotle Inc. (research arm: Prediction Market Research Consortium)
- Launched
- 3 November 2014
- Profit fee
- 10% of net profit per market, at settlement
- Withdrawal fee
- 5%; $40 extra for an international wire
- Minimum deposit
- $10 by card, debit or PayNearMe cash
- Minimum withdrawal
- $10 by ACH or mailed check
- Withdrawal hold
- 30 days from first deposit (60 for international traders)
- Per-contract limit
- $3,500 (was $850 until 2025)
- Share pricing
- 1 to 99 cents; a correct share pays $1
- Mobile
- No app; responsive website
- Support
- Email form and help center; no live chat or phone
18+ only. Odds, offers and terms change; check them on the operator's site before you deposit. If betting stops being fun, take a break: BeGambleAware (UK) 0808 8020 133, 1-800-GAMBLER (US).