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Jupiter Predict fees depend on the market type. The current fee rates in the app take precedence over this page. Quoted amounts are estimates; final costs depend on the trades that fill and the fees that apply.

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How are trading fees charged?

When buying or selling contracts:
  • Trading fees apply only to the part of your order that fills. An order with no fills has no trading fee.
  • For an open buy limit order, funds for the unfilled portion stay reserved. Unused funds are returned when the order closes.
  • On Polymarket markets, trades settle in JupUSD. If you pay with another token, it is swapped to JupUSD first. Swap costs and Solana network costs are separate from trading fees.
  • Claiming winnings from a Polymarket position has no additional trading fee. Fees already paid on filled trades are not refunded. Returning unused order funds also has no trading fee.
Arcade uses a different fee model, explained below.

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What fee does each market type charge?

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How are fees on Polymarket markets calculated?

For standard Jupiter trades on Polymarket-sourced markets, trading fees have two parts: Trade value is the number of contracts filled multiplied by their execution price, before fees. The builder fee is based on this value, not your profit or potential payout. A taker trade fills against an available order. A maker trade comes from an order that waits on the order book until another trader fills it. A limit order can fill immediately as a taker, so choosing a limit order does not guarantee zero platform fees. If part fills immediately and the rest fills later as a maker, each part is charged according to how it fills. Polymarket’s platform fee varies by market and execution price; see Polymarket’s fee schedule. Jupiter’s builder fee is added separately. For example, buying 100 contracts at $0.25 has a trade value of $25. The builder fee is $0.50, so the total cost is $25.50 plus any applicable platform fee. Selling contracts for $25 before fees returns $24.50 minus any applicable platform fee. These examples exclude separate swap and network costs.

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How does the Arcade fee work?

Arcade rounds do not use contracts or an order book: everyone bets into a shared pool, and the winning side splits it. The fee is 1% of your payout, and your payout includes your own stake back: Payout = your stake ÷ the winning side’s pool × the total pool × 0.99 For example, $1 on Down against $1,000 on Up pays about $990 if Down wins. Losing bets pay no fee because they receive no payout, and stakes refunded from one-sided rounds or flat closes are returned in full with no fee. See Arcade.

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Can other routes add fees?

Markets that use other routes can include additional or different fees: Degen markets may use a different route from standard Browse markets, so the Polymarket fee rules above do not necessarily apply to them. Check the quote for the specific market and route before you sign.

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What Solana network costs apply?

Jupiter Predict runs on Solana, so you need a small SOL balance for:
  • Transaction fees, paid when you sign transactions.
  • Account rent, a temporary deposit some on-chain accounts require.
Rent is recovered automatically when eligible accounts are closed. These are standard Solana network costs, separate from Predict trading fees.