We have the BNB trading fee deduction function.
We would recommend though to check whether this feature is enabled in your Binance account just to insure that Stoic can use BNB to cover the trading fees
(Should be on: https://www.binance.com/en/support/faq/115000583311 => 2. Can I turn on/off the (Using BNB to pay for fees) function?).