Regulations for the Computation of Business Tax for Dual-Status Business Entities Article 8-3

If a dual-status business entity fails to follow Subparagraph 6 of Article 8-2 at the time of adjustment and filing of the last business tax return for the year, the competent authority may suspend the use of the direct deduction method by the said business entity. In such case, the said business entity shall compute its business tax in accordance with the provisions in Articles 1 to 7 herein and shall not change the computation method within the following three years.If the use of the direct deduction method for the computation of business tax by a dual-status business entity has been suspended during a year, the tax period in the year immediately prior to the initiation of the ratio deduction method shall be treated as the last filing period of the year in which the tax adjustment shall be made according to Items 1 and 2 of Subparagraph 4 of Article 8-2 herein.
中文原文 兼營營業人營業稅額計算辦法第8-3條
兼營營業人於調整報繳當年度最後一期之營業稅,未依第八條之二第六款規定辦理者,主管稽徵機關得核定停止其採用直接扣抵法,該兼營營業人於三年內應依第一條至第七條規定計算其應納營業稅額,不得變更。
兼營營業人於停止其採用直接扣抵法時,其當年度已經過期間,應於改採比例扣抵法前報繳稅款之當期,視為當年度最後一期,依第八條之二第四款第一目及第二目規定辦理。

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