现货、合约手续费与永续资金费率指南
用 10 USDT 的手续费示例理解返佣，并区分挂单、吃单、USDT 本位永续资金费和预估强平价。
现货手续费怎么算？合约手续费又怎么算？
分别查看平台的现货和合约费率表，并区分挂单和吃单。返佣按符合条件的手续费计算。例如一笔交易收取 10 USDT 手续费，其中全部符合 20% 返佣条件，示例返还 2 USDT。永续合约还可能产生资金费，是否纳入活动要看平台条款。
挂单和吃单手续费在哪里查？
在交易所费率表分别查 Maker 和 Taker 费率，再对照成交明细的实际角色。限价单如果立即与已有订单成交，也可能按吃单费率计算。
交易所现货和合约有什么区别？
现货交易买卖资产。合约交易建立与标的价格相关的仓位，可能使用保证金和杠杆。看合约费用前，先了解保证金模式、强平规则与资金费的结算方式。
USDT 本位永续合约的资金费率在哪里看？
在具体合约交易页查当前资金费率和下一次结算时间，在持仓或资金流水里查实际扣收。资金费与合约开平仓手续费是两项记录，比较成本时应分开核对。
资金费率为正或为负，如何理解？
常见的永续合约规则下，正资金费率通常由多头向空头支付，负费率时方向相反。结算时点、金额公式和是否发生支付，要以该合约规则与账单为准。
合约预估强平价在哪里看？
在平台的持仓详情查预估强平价，再核对采用的价格口径、保证金模式及维持保证金要求。余额、其他仓位或风险档位变化时，预估值可能随之变动。
Read in English
Spot Fees, Futures Fees and Perpetual Funding
Use a 10 USDT fee example to understand rebates, maker and taker fees, perpetual funding and estimated liquidation prices.
How do spot and USDT-margined futures fees compare?
Check the spot and futures fee schedules separately and distinguish maker and taker fees. A rebate applies to eligible fees. For example, if a 10 USDT fee is fully eligible at 20%, the rebate is 2 USDT. Perpetual contracts can also incur funding payments, whose eligibility depends on the offer terms.
Where do I check maker and taker fees?
Find maker and taker rates on the exchange fee schedule and check the actual role in the fill details. A limit order can incur a taker fee if it immediately matches an existing order.
How do spot and futures trading differ?
A spot trade buys or sells the asset. A futures trade creates a position linked to its price and can involve margin and leverage. Understand the margin mode, liquidation rules and funding schedule before comparing futures fees.
Where can I see the funding rate for a USDT-margined perpetual?
Check the specific contract page for its current funding rate and next settlement time. Look at your position or account history for the actual payment. Review funding and trade fees separately when comparing costs.
What do positive and negative funding rates mean?
Under common perpetual contract rules, longs typically pay shorts when funding is positive. The direction reverses when the rate is negative. Check the contract's terms and your statement for the schedule, calculation and actual payment.
Where do I check a futures position's estimated liquidation price?
Look in the platform's position details. Check the price basis, margin mode and maintenance margin requirement. The estimate can change with balances, other positions or risk tiers.