Regulations on Disposal of the Financial Affairs of Social Associations Article 21

All the account books, accounting documents, and accounting reports of a social organization, except those which shall be permanently kept or which are related to unsettled accounting events, shall be kept for at least ten (10) years after thecompletion of annual closing procedures.Upon expiration of the specified term of storage, the financial archives listed in the preceding paragraph may be destroyed after being verified by the board of supervisors. In special occasions, the term of storage may be prolonged with the consent given inthe respective meetings of the board of directors and the board of supervisors or a joint meeting of directors and supervisors.
中文原文 社會團體財務處理辦法第21條
社會團體各項會計帳簿、會計憑證及會計報告表冊,應於年度決算程序辦理終了後,至少保存十年。
但應永久保存或有關未結會計事項者,不在此限。
前項已屆滿保管年限之財務檔案,經監事會點驗後得予銷燬,其因特殊原因,得將保管年限經理事會及監事會或理監事聯席會議通過後延長之。

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