Trading Fees

When you perform trades, SunX charges a fee (in USDT) on both opening and closing positions, which is factored into the realized profit and loss (PnL).

For example, in BTCUSDT perpetual futures trading, all fees are charged in USDT. These trading fees (or rebates for makers) are not frozen at the time of order placement; they are only deducted after execution and included in the realized PnL.

Formula: Trading fee = Number of executed contracts * Face value per contract * Execution price * Trading fee rate

USDT-Margined Perpetual Futures Fee Rates:

Fee Rates to Open: Maker - 0.02%; Taker - 0.06%

Fee Rates to Close: Maker - 0.02%; Taker - 0.06%

Example 1: User A opens a long position of 200 conts (face value per cont: 0.001 BTC) in BTCUSDT perpetual futures at a price of 5,000 USDT, with the order filled as a taker. As the price rises after a few days, the user closes their position by placing a market order to sell all 200 conts at 6,000 USDT, with the order fully filled. Therefore:

Opening fee: 200 * 0.001 * 5,000 * 0.06% = 0.6 USDT

Closing fee: 200 * 0.001 * 6,000 * 0.02% = 0.24 USDT

Example 2: User B opens a long position of 200 conts (face value per cont: 0.01 ETH) in ETHUSDT perpetual futures at a price of 400 USDT, with the order filled as a taker. As the price rises after a few days, the user closes their position by placing a market order to sell all 200 conts at 480 USDT, with the order fully filled. Therefore:

Opening fee: 200 * 0.001 * 400 * 0.06% = 0.48 USDT

Closing fee: 200 * 0.001 * 480 * 0.02% = 0.192 USDT

Notes:

1. The fee rates above are for illustration only. Please refer to your actual fee tier in the Fee Rates.

2. Maker orders are limit orders added to the order book and pending execution, providing liquidity.

3. When another user's open order executes against your pending order, you'll pay a maker fee.

4. Taker orders are the limit or market orders that match immediately with existing orders in the book.

5. When your pending order matches another user's open order, you need to pay a taker fee.

6. A negative fee rate means you are not charged a fee; instead, you receive a rebate on the trade.