Standards Governing the Establishment of Commercial Banks Article 16

For the bank which has not commenced its business within six months after the business license is issued, the competent authority shall revoke the permit of establishment, have the license cancelled within a prescribed period of time and notify the competent authority of incorporation registration. If, however, there is a legitimate reason, upon the approval of the competent authority, the extension application may be granted. Such extension application shall not exceed six months and is only limited to one time.
中文原文 商業銀行設立標準第16條
銀行經核發營業執照後滿六個月尚未開始營業者,主管機關應廢止其設立之許可,限期繳銷執照,並通知公司登記主管機關。
但有正當理由經主管機關核准者,得予延展,延展期限不得超過六個月,並以一次為限。

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