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Overview

Bison charges fees on successful trades and passes on the majority to the developer. Fees are charged whenever orders are filled.

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Fee Calculation

When an order is filled, fees are calculated based on the dev account associated with the order. If no dev account is specified, no fees are charged.

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Gross Fee

The gross fee collected is calculated as: GrossFeeAmount=max⁡(GrossBaseFee,⌊TradeAmount×GrossFeeBps10,000⌋)\mathrm{GrossFeeAmount} = \max \left( \mathrm{GrossBaseFee}, \left\lfloor \mathrm{TradeAmount} \times \frac{\mathrm{GrossFeeBps}}{10{,}000} \right\rfloor \right) Where:
  • GrossBaseFee is the minimum fee in µUSDC (micro-USDC, where 1 USDC = 1,000,000 µUSDC)
  • GrossFeeBps is the fee rate in basis points (1 bps = 0.01%)
  • TradeAmount is the trade amount in µUSDC
The gross fee is the maximum of:
  1. The base fee (minimum fee regardless of trade size)
  2. The percentage-based fee calculated from the trade amount

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Fee Distribution

The gross fee is then split between the developer and Bison: BisonFeeAmount=⌊GrossFee×BisonFeeCutBps10,000⌋DevFeeAmount=GrossFee−BisonFee\begin{align*} \mathrm{BisonFeeAmount} &= \left\lfloor \mathrm{GrossFee} \times \frac{\mathrm{BisonFeeCutBps}}{10{,}000} \right\rfloor \\ \mathrm{DevFeeAmount} &= \mathrm{GrossFee} - \mathrm{BisonFee} \end{align*} Where BisonFeeCutBps determines Bison’s share of the gross fee in basis points.
Bison’s fee cut is 33.33% (3,333 bps). The majority is passed on to you, the developer. If your application does significant trading volume, please reach out to the Bison team directly to discuss a different fee structure.

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Defaults

Dev accounts default to the following fee structure:
  • GrossBaseFee: 100,000 µUSDC ($0.10)
  • GrossFeeBps: 100 (1%)