Fee Calculation

Users are classified into six tiers (VIP0–VIP5) based on their rolling 14-day trading volume. Each tier corresponds to a specific maker fee and taker fee as defined in the Fee Schedule.

14-Day Trading Volume

The 14-day trading volume is the aggregated notional trading volume executed by a user over the most recent 14 days, across all supported trading pairs. Each fill is converted to USDT notional using the execution price at the time of the trade. The rolling total is recalculated daily at 07:00 (UTC).

Example: If a user trades BTC, XRP, DOGE, SOL, and BCH within the past 14 days, each fill is converted to USDT notional at its respective execution price. At 07:00 (UTC) each day, the platform recomputes the cumulative notional volume over the latest 14-day window.

Maker and Taker Orders

A maker order is a limit order that is not immediately matched and is therefore posted to the order book, adding liquidity. A taker order is an order that immediately matches against existing liquidity, removing liquidity from the order book. Fees are assessed upon execution, using the applicable maker/taker fee rate for the user’s current tier.

Fee Calculation Rules

Transaction Fee = Average Transaction Price × Contract Value × Number of Contracts × Fee Rate

Average Transaction Price = Σ(Priceᵢ × Volumeᵢ) / Total Volume

Example: For BTCUSDT perpetual contracts with a contract value of 0.0001 BTC per contract, assume the average transaction price is 100,000 USDT.

Trader A (Maker Fee: 0.02%, Taker Fee: 0.05%) opens/closes 100 contracts at market price (taker).

Trading fee for Trader A = 100,000 × 0.0001 × 100 × 0.05% = 0.5 USDT.

For USDT-margined perpetual contracts, fees are settled in USDT and deducted immediately from the available balance after each execution.

Liquidation

A liquidation fee is charged using the most conservative taker fee rate (i.e., 0.05%) across all tiers. This approach ensures costs are covered under stressed market conditions and supports stable platform operation.

Daily Update of Fee Level

The platform updates each user’s latest fee tier on a daily basis at 07:00 (UTC), based on the rolling 14-day trading volume.

FAQ

Q: What are maker and taker orders? Why are the fees different? A: A taker order executes immediately against existing orders and removes liquidity, so it is typically charged a higher fee (taker fee). A maker order posts to the order book and adds liquidity, so it is typically charged a lower fee (maker fee).

Q: Why can the PnL shown while holding a position differ from the PnL after closing? A: Unrealized PnL reflects mark-to-market gains/losses before closure. Realized PnL is the net result after closing, accounting for transaction fees and funding payments. The difference commonly arises from these costs.

Realized PnL = Price Difference × Contract Value × |Number of Contracts| + Funding Fees (±) − Transaction Fees

Example: For 100 BTCUSDT perpetual contracts (contract value 0.0001 BTC per contract), opening price 100,000 USDT, closing price 105,000 USDT, Opening Fee −0.5 USDT, Closing Fee −0.5 USDT, Funding Fee −1 USDT:

Realized PnL = (105,000 − 100,000) × 0.0001 × 100 − 1 − 0.5 − 0.5 = 48 USDT