Income Tax Act Article 14-7

When an individual fails to file the tax return within the period as specified in Article 14-5, the tax authority may assess the amount of income and tax payable and issue to the individual a written notice, demanding the payment of tax within the time limit.For implementation of the investigation and verification by the tax authority after receiving a tax return filed by an individual in accordance with Article 14-5, the provisions of Paragraph 1 of Article 80 shall apply mutatis mutandis.For serving, checking and correction of the assessment notice showing the result of further investigation in accordance with the preceding Paragraph, Article 81 shall apply mutatis mutandis.For an individual who has refundable tax payment through the investigation and verification in accordance with Paragraph 2, Paragraphs 2 and 4 of Article 100 shall apply mutatis mutandis.For an individual who declares the deductions of various kinds of costs, expenses, and losses which exceed the limitations prescribed by Article 14-4 and the preceding Article, and thus the voluntary payment of tax falls short, Article 100-2 shall apply mutatis mutandis.
中文原文 所得稅法第14-7條
個人未依第十四條之五規定期限辦理申報者,稽徵機關得依前條規定核定所得額及應納稅額,通知其依限繳納。
稽徵機關接到個人依第十四條之五規定申報之申報書後之調查核定,準用第八十條第一項規定。
前項調查結果之核定通知書送達及查對更正,準用第八十一條規定。
第二項調查核定個人有應退稅款者,準用第一百條第二項及第四項規定。
個人依第十四條之四及前條規定列報減除之各項成本、費用或損失等超過規定之限制,致短繳自繳稅款,準用第一百條之二規定。

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