Rules Governing the Administration of Electronic Payment Business Article 24

An electronic payment institution shall not offer users or contracted institutions overdraft services, loans, or other credit lines. Nor shall an electronic payment institution advances for a user when the amount of payment instructed by the user exceeds the balance in his/her e-payment account or stored value card. However, the aforementioned restrictions shall not apply to one-time advances and usage in the public transportation or parking lot business.
中文原文 電子支付機構業務管理規則第24條
電子支付機構不得對使用者及特約機構提供透支及放款等授信或信用額度,或於使用者支付指示之金額逾電子支付帳戶或儲值卡餘額時,為使用者代墊款項。
但為單次墊款且使用於大眾運輸事業或停車場業,不在此限。

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