Enforcement Rules of The Taxpayer Rights Protection Act Article 3

The term "The taxpayers' income for maintaining their basic living expenses shall not be taxed" in Paragraph 1 Article 4 of the Act referring to the expense amount which is maintained for basic living for taxpayers, spouses, and dependents shall not be less than the amount which taxpayers may deduct from the gross consolidated income, including the amount of Exemption and deductions. The aforementioned expense amount shall be calculated in accordance with the expense of basic living for each person in the current year announced by the Central Authority multiplied by the number of taxpayers, spouses, and dependents. If the deducted amount is less than the basic living expenses, the taxpayer may use the difference as a deduction from the gross consolidated income.The deductions referred to in the preceding paragraph do not include the special deduction for loss from the property transaction and the special deduction of income from salaries/wages.The Ministry of Finance shall announce the expense of basic living for each person in accordance with Paragraph 2, Article 4 of the Act before the end of December each year. The amount shall be calculated in units of NT$1,000; if the amount is less than NT$1,000, it shall be calculated as a unit of NT$1,000 and rounded up or down to the nearest NT$1,000 using the traditional method.
中文原文 納稅者權利保護法施行細則第3條
本法第四條第一項所稱維持基本生活所需之費用,不得加以課稅,指納稅者按中央主管機關公告當年度每人基本生活所需之費用乘以納稅者本人、配偶及受扶養親屬人數計算之基本生活所需費用總額,超過其依所得稅法規定得自綜合所得總額減除之本人、配偶及受扶養親屬免稅額及扣除額合計數之金額部分,得自納稅者當年度綜合所得總額中減除。
前項扣除額不包括財產交易損失及薪資所得特別扣除額。
財政部應於每年十二月底前,依本法第四條第二項規定公告當年度每人基本生活所需之費用,其金額以千元為單位,未達千元者按百元數四捨五入。

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