The margin is charged in proportion, which is divided into exchange margin+futures company margin.

For example, at present, the margin ratio of rebar exchange is 10%, calculated at the price of 5000: 5000* 10 (ten tons per lot) * 10%=5000 yuan.

In other words, according to the deposit of 10%, it costs 5000 yuan to make first-grade rebar.

The lower the margin ratio, the greater the leverage. If the margin ratio is 10%, it is equivalent to 10 times leverage. The margin ratio of many varieties of exchanges is 5%, and the leverage is 20 times.