Enforcement Rules of the Income Tax Act Article 31-2

The interest income of short-term commercial papers that shall be included in the amount of income of the profit-seeking enterprise as stated under Paragraph 3, Article 24 of the Act refers to the amount calculated by multiplying the proportion of the profit-seeking enterprise’s holding period to the duration of the issuance of the short-term commercial papers with the interest income for the portion of the maturity payment amount of the short term commercial papers that exceeds the first sales price. The tax amount calculated in accordance with the withholding tax rate multiplied by the prescribed interest income is allowed as deduction against the amount of the profit-seeking income tax payable for the annual income tax return.The gains or losses derived from the property transaction whereby a profit-seeking enterprise sells short-term commercial papers as described in the preceding paragraph before the due date shall be the net amount of the sale price minus the purchase price and interest income calculated as described in the preceding paragraph.The tax amount calculated in accordance with the prescribed withholding rates stated in Paragraph 2, Article 24-1 of the Act refers to the tax amount calculated in accordance with par value, coupon rate and holding period of government bonds, corporate bonds, and financial bonds and in accordance with the prescribed withholding rates.
中文原文 所得稅法施行細則第31-2條
本法第二十四條第三項但書所稱應計入營利事業所得額課稅之短期票券利息所得,指依短期票券到期兌償金額超過首次發售價格之差額,按持有期間占該短期票券發行期間比例計算之金額。
該項利息所得依規定扣繳率計算之稅額,得自營利事業所得稅結算申報應納稅額中減除。
營利事業持有前項短期票券於到期日前出售者,應以售價減除購進價格及依前項規定計算之利息所得後之餘額,為財產交易所得或損失,併計營利事業所得額。
本法第二十四條之一第二項所稱依規定之扣繳率計算之稅額,指依公債、公司債及金融債券票面金額,按票面利率、持有期間及規定扣繳率計算之稅額。

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