Formula for calculating Coin-Margin Perpetual Contract:
Contract Multiplier * Amount (Contracts) * Fee Rate / Execution Price
(Details on Contract Multiplier can be found in the Introduction Chapter)
John Doe opened 100 contracts LONG at the price of 8000 USDT (contract multiplier is 1USD). Suppose his fee rate is 0.05%, then this trade’s fees will be 1USD * 100 * 0.05%/ 8000 USDT/BTC = 0.00000625 BTC
Fees for coin margin contracts is the underlying asset of the contracts. (E.g. BTC Coin Margin Perpetual Contract trading fees will be charged in BTC, LTC Coin Margin Perpetual Contract trading fees will be charged in LTC).