Financial Asset Securitization Act Article 39

Other than Beneficiary Securities being recognized as short-term bills by the competent authority, the trading of Beneficiary Securities shall be subject to the securities transaction tax at the tax rate applicable to corporate bonds.
中文原文 金融資產證券化條例第39條
受益證券除經主管機關核定為短期票券者外,其買賣按公司債之稅率課徵證券交易稅。

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