Enforcement Rules of Value-added and Non-value-added Business Tax Act Article 32

Where a business entity applies, based on article 23 and paragraph 1 of Article 24 of the Act, for changing the method of calculating its business tax into the one provided in Section I of Chapter IV of the Act, a decision shall be made by the tax authority in charge within one month. Such business entity shall use government uniform invoices, set up books of accounts from the first day of the month in which approval of change is granted by the tax authority in charge, and file business tax returns and pay the tax in accordance with the reporting period specified in Article 35 of the Act.The creditable tax on goods or services purchased, as prescribed in Paragraph 2 of Article 25 of the Act, which is unused before the change mentioned in the preceding Paragraph is made may be claimed against the business tax payable after the change is made.The preceding two Paragraph shall be applicable mutatis mutandis to those small-scale enterprises which are determined by the MOF as having to calculate their business tax in accordance with Section I of Chapter IV of the Act.
中文原文 加值型及非加值型營業稅法施行細則第32條
營業人依本法第二十三條及第二十四條第一項規定申請改按本法第四章第一節規定計算稅額者,主管稽徵機關應於一個月內核定。
該營業人應於主管稽徵機關指定變更課稅方式之月一日起,依照規定使用統一發票、設置帳簿,並依本法第三十五條規定按期自行申報納稅。
前項營業人於變更課稅方式前,其所有依本法第二十五條第二項規定得繼續扣減之進項稅額,留抵變更課稅方式後之應納稅額。
前二項規定於小規模營業人經財政部核定應依本法第四章第一節規定計算稅額者準用之。

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