# 资金费率机制

资金机制确保永续合约价格与现货市场价格保持挂钩，资金在多头和空头之间直接转移，BBX 不收取任何资金费用。

**费率方向：**

* 正资金费率（永续价 > 现货价）：多头支付空头
* 负资金费率（永续价 < 现货价）：空头支付多头

**结算时间：**

* 采用行业标准，每 4 小时结算一次
* 仅对结算时间戳时持有的仓位生效；
* 结算前已平仓的仓位不参与

**对保证金的影响：**

资金费用优先从可用账户余额扣除；若余额不足则从仓位保证金扣除，导致清算价格更接近标记价格、清算风险上升。

**波动期间的可变间隔：**

在市场剧烈波动时，资金结算间隔可能调整，以加速价格收敛，调整以透明方式进行。


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