资金费率是在永续合约上持有多头仓位的交易者与持有空头仓位的交易者之间流动的小额付款。它们让永续合约价格与资产的实际现货价格保持一致。
当永续合约价格高于现货时，多头付给空头。当永续合约价格低于现货时，空头付给多头。方向会随市场状况翻转，正是这种拉扯让合约价格长期跟随现货。
资金费何时支付
资金费每小时结算一次。如果整点时你有持仓，付款会自动结算。在逐仓仓位上，它从该仓位的保证金中扣除或计入。在全仓模式下，它变动的是你共用的永续合约现金余额。
金额与你的仓位大小成正比，所以仓位越大，付出或收到的金额也越大。这就是为什么你的保证金或永续合约现金余额会在你没有任何交易的情况下发生变化。
资金费会随时间累积
每小时的金额很小，但会累积起来。持有几天或几周的仓位可能累积可观的资金费成本，如果你在收取的一方，也可能是可观的收益。在决定是否继续持仓时，请把资金费率和盈亏一起考虑，而不只是看价格变动。
在哪里查看费率
任何市场当前的资金费率都在其市场页面的「关于」部分，显示为「资金费率 (1h)」。一旦你持有仓位，它的「资金费」一行会显示自开仓以来你累计支付或收取的总额。
永续合约（「Perps」）由第三方协议提供，不向美国人士（美国公民、居民或任何身处美国的人）开放。请勿尝试从美国境内访问永续合约。
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