Deposit Insurance Act Article 14

The assessment base shall be calculated based on the total liabilities over underlying deposits after subtracting the uninsured deposits mentioned in Paragraph 2 of Article 12 and shall be calculated once every semiannual period; the standard dates for calculating such base shall be determined by the CDIC.
中文原文 存款保險條例第14條
保險費基數,以要保機構存款標的之負債總額扣除第十二條第二項規定不保項目存款之餘額為準,並以每半年計算一次;其計算基準日,由存保公司定之。

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