Short answer
- Lowest fees from a Solana wallet: Pascal, a non-custodial order book on Solana where takers pay 2% × price × (1 − price), about $1 on a $100 trade at 50 cents. Makers get a quarter of that back.
- Most markets: Polymarket. Fund it from Solana with SOL, USDC or USDT ($2 minimum). Takers pay $2 to $3.50 on a $100 trade at 50 cents by category, geopolitics markets are free, and makers never pay.
- Inside a Solana app you already use: Jupiter Predict from Jupiter, which lists mainly Polymarket markets at twice Polymarket's fee, plus fee-free sports ticket and Forecast markets.
- Regulated, account-based: Kalshi, funded by bank, card or crypto deposit.
- Sports betting exchange: BetDEX, 1% commission on net profits, no fees on losing bets.
At a glance
| Market | Runs on | Model | Fee | Cost of a $100 buy at 50 cents |
|---|---|---|---|---|
| Pascal | Solana | Order book | Takers 2% × p × (1 − p); makers get 25% back | $1.00 |
| Polymarket | Off Solana, funded from Solana | Order book | Takers 0.04–0.07 × p × (1 − p); geopolitics free | $2.00 (politics) to $3.50 (crypto) |
| Jupiter Predict | Solana app, Polymarket markets | Order book | 2× the Polymarket fee; sports tickets and Forecast free | $4.00 (politics) |
| Triad | Solana | Shared pool | 5% on $0.10–$0.90 shares; 0.36% of profit on a win | $5.00 |
| Kalshi | Regulated exchange | Order book | Fee on expected earnings, highest near 50 cents | See fee schedule |
| BetDEX | Solana | Sports betting exchange | 1% of net profits | $0 to bet |
| Trepa | Solana | One-minute accuracy contests | 20% of losing stakes | $0 to enter |
p is the share price. Costs are taker fees from each market's own docs, before Solana network fees and spread.
Why fees peak at 50 cents
Most order-book prediction markets charge takers a rate × price × (1 − price). That's largest at 50 cents, when the outcome is most uncertain, and shrinks toward 1 cent or 99 cents. On Polymarket a 100-share crypto trade costs $1.75 at 50 cents but $0.63 at 10 or 90 cents. Buying long shots or near-certain outcomes is cheaper per share; trading coin-flip markets costs the most.
Limit orders that rest on the book usually pay nothing on Pascal and Polymarket and earn a share of taker fees. If you aren't in a hurry, a limit order is the cheapest way in.
Order books vs pools
Order books (Pascal, Polymarket, Kalshi) match buyers and sellers. You can sell before the event resolves at the current bid, and the price is the market's probability.
Shared pools (Triad) put both sides' money in one pot; winners split the losing side's contributions. Payouts depend on how much is on each side at the end, not the price you entered at.
Contests (Trepa) score how close your price prediction is, and the better half of players split the losing stakes.
How to choose
- Liquidity first. A market with thin depth costs more in spread than in fees. Check the order book before trading size.
- Read the resolution rules. Every market names its source and edge cases. Disputes and delays happen.
- Check where you can trade. Some markets restrict regions. Follow each platform's terms.
- Use limit orders. Makers pay no fee on Pascal or Polymarket.
- Size small. You can lose your whole position on any market.
The markets
Pascal
A non-custodial prediction market exchange on Solana: USDC collateral sits in a Solana program and orders match on a central limit order book, through the app or a REST and WebSocket API. Takers pay 2% × price × (1 − price) per contract by default and makers receive 25% of the taker fee. Deposits come from a Solana wallet or by withdrawing from Polymarket or an exchange.
Polymarket
The largest crypto prediction market, across politics, sports, crypto, finance, culture and more. Taker fee rates run from 0.04 to 0.07 by category, geopolitics is free, makers are never charged, and there are no Polymarket deposit or withdrawal fees. Deposits from Solana in SOL, USDC or USDT, $2 minimum. Audited by Cantina and Quantstamp with Certora formal verification.
Jupiter Predict
Prediction markets inside Jupiter on Solana, mainly sourced from Polymarket, plus 5- and 15-minute Up or Down markets and a one-minute Arcade. Polymarket-sourced markets charge twice the Polymarket fee; sports ticket and Jupiter Forecast markets charge no trading fee; Arcade takes 1% of winning payouts. $5 minimum on Polymarket-sourced orders.
Triad
Pool-based prediction markets with Pre-Market and short Fast Markets. 5% on buys and sells priced $0.10 to $0.90, falling to 0.9% near $0.99, and 0.36% of profit on a winning position.
Kalshi
A regulated exchange for event contracts on real-world events, for US and international users. Fees are based on a contract's expected earnings and are highest near 50 cents; some markets add maker fees. Funded by bank, card, PayPal or crypto deposit.
BetDEX
A peer-to-peer sports betting exchange on Solana where you back or lay odds against other bettors instead of a bookmaker. 1% commission on net profits, and it says it doesn't limit winning accounts.
Trepa
One-minute contests where you predict an exact BTC price. Beat the round's median error and you win your stake back plus a share of losing stakes, after a 20% take.
How we ranked
Binary event markets you can trade from a Solana wallet rank first, ordered by the taker fee on a $100 buy at 50 cents in a politics market, from each market's own fee docs. Kalshi, which uses an exchange account, comes next, then markets with different formats (sports betting, contests). Checked in October 2026. Prediction markets carry real financial risk; this isn't financial advice. Editorial policy.