BUSINESS MERGERS AND ACQUISITIONS ACT Article 48

Any loss from the transaction in which a company applied its business or assets in subscribing or exchange for the shares from another company and the value of such acquired shares is lower than the book value of the business or assets may be amortized within fifteen years; provided, however, that any loss incurred, that is prevented from deduction from the income pursuant to Article 44, may not be amortized.
中文原文 企業併購法第48條
公司以營業或財產認購或交換他公司股票時,如所得股票之價值低於營業或財產帳面價值時,其交易損失,得於十五年內認列。
但依第四十四條規定損失不得自所得額中減除者,不得認列。

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