# 平台费用规则

**费用计算规则：**

* 未匹配的交易不收取上架或下架费用。
* 一旦订单成交，卖方会立即收取费用。买方将在结算阶段后产生费用。收取的费用将转入 Unich 财库。
* 当双方都参与结算时，池子的总交易量会收取 2% 的费用。（包括项目代币和保证金）
* 执行提现的方会收取 0.5% 的费用。
* 当一方已结算而另一方未结算时，结算方会收取 4% 的费用。
* 对于在结算阶段双方都退出池子的已匹配订单，将收取 2.5% 的退款费用，按池子的总交易量计算。

**计算公式**： 

* 对于双方都结算的已成交订单：费用 = 2% × 交易量
* 对于仅一方结算的已成交订单（按保证金计算）：费用 = 4% × 交易量（买方 + 卖方）
* 对于买卖双方未执行结算的交易（按抵押资产计算）: 费用 = 2.5% 交易量
* 对于提现订单（按保证金计算）：费用 = 2.5% × 交易量


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