Regulations Governing Application of Agreements for the Avoidance of Double Taxation with Respect to Taxes on Income Article 11

Pursuant to the provisions in association with the term permanent establishment under a DTA, where a permanent establishment is used or maintained solely for the purpose of a specified activity or any combination of specified activities, and for that reason that permanent establishment may be deemed not to be constituted in the territory of the ROC, those specified activities or any combination of specified activities referring in the provisions under such DTA shall be limited to those of a preparatory or auxiliary character.The term “of a preparatory character” mentioned in the preceding paragraph means an activity which is ancillary in nature and is carried out to precede the conducts that constitute the essential and significant part of the business activity of an enterprise as a whole in the territory of the ROC. The term “of an auxiliary character” means a specified activity or any combination of specified activities under a DTA carried on as mentioned in the preceding paragraph that is not a core, essential or significant part of the business activity performed by an enterprise of the other Contracting State within and outside the territory of the ROC as a whole.
中文原文 適用所得稅協定查核準則第11條
依所得稅協定有關常設機構之規定,僅用於規定之活動或活動組合得不視為在中華民國境內有常設機構者,其所定各該活動或活動組合應以具準備或輔助性質者為限。
前項所稱準備性質,指在中華民國境內執行主要營業活動前,從事輔助性質活動者;所稱輔助性質,指就他方締約國之企業在中華民國境內、外整體營業活動而言,其從事前項所得稅協定規定活動或活動組合,非屬核心、必要或重要者。

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