Regulations Governing Anti-Money Laundering and Counter-Terrorist Financing for Certified Public Bookkeepers and Bookkeeping and Tax Return Filing Agents Article 9

A certified public bookkeeper or bookkeeping and tax return filing agent shall, during the retention period stipulated in Paragraph 2 of Article 8 and Paragraph 2 of Article 10 of the Act, set up files regarding the customer transactions processed and retain photocopies, electronic files, or transcripts of identification documents or statements provided by customers and other related personnel. In the event that their identity is verified based on reasonable grounds or in a reasonable manner, descriptions of such grounds or manner or related supporting documents that are sufficient to permit reconstruction of individual transactions shall be retained completely, and copies or electronic files of the correspondence, records, and documents regarding the transactions shall be kept.
中文原文 記帳士暨記帳及報稅代理人防制洗錢與打擊資恐辦法第9條
記帳士、記帳及報稅代理人應依本法第八條第二項及第十條第二項規定之保存期限,就受理客戶交易事項設置檔案,留存客戶及其他相關人員之身分證明文件或聲明影本、電子檔案或抄錄資料;其依合理事實或方式確認身分者,應完整留存足以重建個別交易事實或方式之說明或證明文件,並留存交易事項往來文件及紀錄憑證副本或電子檔案。

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