> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bison.markets/llms.txt
> Use this file to discover all available pages before exploring further.

# Fee Structure

> Understanding trading fees on Bison

## Overview

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

## 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.

### Gross Fee

The gross fee collected is calculated as:

$$
\mathrm{GrossFeeAmount} = \max \left( \mathrm{GrossBaseFee}, \left\lfloor \mathrm{TradeAmount} \times \frac{\mathrm{GrossFeeBps}}{10{,}000} \right\rfloor \right)
$$

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

### Fee Distribution

The gross fee is then split between the developer and Bison:

$$
\begin{align*}
\mathrm{BisonFeeAmount} &= \left\lfloor \mathrm{GrossFee} \times \frac{\mathrm{BisonFeeCutBps}}{10{,}000} \right\rfloor
\\
\mathrm{DevFeeAmount} &= \mathrm{GrossFee} - \mathrm{BisonFee}
\end{align*}
$$

Where **BisonFeeCutBps** determines Bison's share of the gross fee in basis points.

<Note>
  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.
</Note>

## Defaults

Dev accounts default to the following fee structure:

* **GrossBaseFee**: 100,000 µUSDC (\$0.10)
* **GrossFeeBps**: 100 (1%)