The Enforcement Rules of the Land Tax Act Article 44

Landowners filing a declaration within the jurisdiction of the Act, for a sold self-use residential land with an area exceeding the limit specified under Paragraph 1 or Subparagraph 1, Paragraph 5, Article 34 of the Act shall calculate to the area limitation in accordance with the priority of applicability that the landowners selected; if not selected by the landowners, the applicable priority refers to the land value increment tax calculated according to Article 33 of the Act from high to low.For sold self-use residential land which has not been assessed in accordance with Paragraph 1, Article 34 which came into force on January 13, 2014, or Paragraph 5 of the same Article which came into force on September 23, 2021, the provisions of the preceding paragraph shall apply.
中文原文 土地稅法施行細則第44條
土地所有權人申報出售在本法施行區域內之自用住宅用地,面積超過本法第三十四條第一項或第五項第一款規定時,應依土地所有權人擇定之適用順序計算至該規定之面積限制為止;土地所有權人未擇定者,應以各筆土地依本法第三十三條規定計算之土地增值稅額,由高至低之適用順序計算之。
本細則中華民國一百零三年一月十三日修正施行時適用本法第三十四條第一項或一百十年九月二十三日修正施行時適用同條第五項規定之出售自用住宅用地尚未核課確定案件,適用前項規定。

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