The margin you mentioned in the system is 10%, which refers to the margin of the exchange. In order to control their own risks, futures companies will add a few percentage points to the exchange, which depends on the platform of each company, but it will generally be similar. The higher the trading margin, the smaller the leverage, which means that the smaller the magnification of your capital, the smaller the corresponding risk.
The handling fee is like this. What is handed over to the exchange is already mandatory and mandatory, and the rest is the profit of the futures company. As for adding a few dollars to the handling fee stipulated by the futures exchange, it depends on the situation of each company. There may be fluctuations in this area.
Simply put, the deposit is the cost of your operation, and the handling fee is the cost of your operation ~
I hope it helps you ~ If you still don't understand, you can continue to ask questions. . .