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The taker pays a fee on each fill. The taker is the side whose order matched a resting order, and the maker is the side whose order was resting. A maker never pays. Fee=c⋅P (1−P)⋅N⋅1¢\text{Fee} = c \cdot P\,(1 - P) \cdot N \cdot 1\text{¢} PP is the price the fill executed at, not your limit price. A winning contract pays full value, 1¢. The coefficient depends on the market’s schedule, below.

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The two fee schedules

Each market carries its schedule in fee:
GET /v3/catalog/markets/{id}
WHEN_LIVE charges the taker only while the event is OPEN_INGAME. ALWAYS charges in every phase, because a futures event never goes live. makerCredit is the maker’s share of the taker’s fee on the same fill.
Taker fee against execution price for 10,000 contracts: a symmetric arc peaking at $0.75 on the game schedule and $1.50 on the futures schedule

Both curves peak at P = 0.50 and fall to zero at the ends. A price of 0.30 costs the same as 0.70.

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Which schedule a market is on

A futures market settles on a season, not a game. In PGA, ATP, WTA and UFC, a futures market carries no futures fee. Its event never goes live, so it charges nothing. Read fee from the market. Never work it out from this table.

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Worked examples

Each fill below is a number of contracts at a price. The maker on the other side of the first fill earns a $0.3750 credit on the game schedule. On the futures schedule, it earns $1.0500.
We decide whether an event is live at match time. A WHEN_LIVE market charges fills on the live side of a GOLIVE, not the pregame side.
Every GOLIVE voids every resting order, and the live window can open more than once. See Event lifecycle.

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Where to read fees

  • GET /v3/catalog/markets/{id} returns fee: the coefficient, the credit, and when it charges.
  • GET /v3/portfolio/fills returns fee on every charged fill, and leaves it out otherwise.
  • GET /v3/account/subaccounts/{keyId}/transactions returns the ledger rows behind a fee.
  • The private stream’s fill event carries no fee.
A fee rounds half up to the millicent, the same way as a balance. See Monetary representations.