BYDFi's current spot transaction fees are as follows:

Maker / Taker: 0.1%

Transaction fees are charged separately at the time when users buy and sell. You can find the transaction fee rate for each currency on the trading introduction page.

Example:

Buy 1 BTC: Transaction Fee = 1 * 0.1% = 0.001 BTC
Sell 1 BTC for 100 USDT: Transaction Fee = 100 * 0.1% = 0.1 USDT