Regulations Governing Application of Agreements for the Avoidance of Double Taxation with Respect to Taxes on Income Article 33

In the case that an individual who is a resident of the other Contracting State and whose spouse is a resident of the ROC derives dividends, interest, royalties, and technical service fees from ROC sources, that resident of the other Contracting State may apply for the limited tax rate to such income as specified in a DTA, to be withheld in accordance with Article 25 of these Regulations. In this context, the requirement of the aforesaid income for joint filing with the spouse, in accordance with Article 15 of the Income Tax Act, shall not apply.
中文原文 適用所得稅協定查核準則第33條
他方締約國之居住者配偶如為中華民國境內居住之個人,該他方締約國之居住者取得中華民國來源之股利、利息、權利金及技術服務費,得依所得稅協定規定之上限稅率及第二十五條規定扣繳,不適用所得稅法第十五條合併申報規定。

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