Business Entity Accounting Act Article 34

(Timely Recording)Accounting events must be recorded in accordance with the sequence of occurrence on a daily basis no later than two months after such occurrence.
中文原文 商業會計法第34條
會計事項應按發生次序逐日登帳,至遲不得超過二個月。

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