Futures Trading Act Article 50

A futures clearing house shall collect a clearing margin from each of its clearing members, and such margin may be deposited in cash or other securities approved by the Competent Authority. With respect to any pledging of securities as margin, the proportion of the total margin value that may be covered by pledged securities shall be prescribed by the Competent Authority.The methods and standards for the collection of clearing margin under the preceding paragraph and the haircut rate on the value of securities pledged as margin shall be prescribed by the futures clearing house and submitted to the Competent Authority for its approval.
中文原文 期貨交易法第50條
期貨結算機構應向期貨結算會員收取結算保證金,其結算保證金得以現金或經主管機關核定之有價證券抵繳;其以有價證券抵繳者,抵繳之有價證券占應繳結算保證金總額之比例,由主管機關定之。
前項結算保證金之收取方式、標準及有價證券抵繳之折扣比率,由期貨結算機構訂定,報請主管機關核定之。

English translation for reference only; the Chinese text prevails. Not legal advice.