# 資金費率機制

資金機制確保永續合約價格與現貨市場價格保持掛鉤，資金在多頭和空頭之間直接轉移，BBX 不收取任何資金費用。

### 費率方向：

* **正資金費率（永續價 > 現貨價）：** 多頭支付空頭
* **負資金費率（永續價 < 現貨價）：** 空頭支付多頭

### 結算時間：

* 採用行業標準，每 4 小時結算一次
* 僅對結算時間戳時持有的倉位生效；
* 結算前已平倉的倉位不參與

### 對保證金的影響：

資金費用優先從可用帳戶餘額扣除；若餘額不足則從倉位保證金扣除，導致清算價格更接近標記價格、清算風險上升。

### 波動期間的可變間隔：

在市場劇烈波動時，資金結算間隔可能調整，以加速價格收斂，調整以透明方式進行。


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