Regulations on the Handling of Counterfeit, Altered, and Imitation New Taiwan Dollar Notes and Coins by Financial Institutions Article 4
In addition to the methods of handling set forth in Article 2,when the Bank of Taiwan discovers counterfeit（altered）or imitation of NT Dollars in the course of handling currency withdrawn from circulation and delivered to it by other financial institutions, it may also collect all such currency within five days after the end of each month and deliver it to the Central Bank’s Department of Issuing for handling.
中文原文 金融機構處理偽造變造仿造新臺幣券幣辦法第4條
台灣銀行於整理各金融機構送存之新臺幣回籠券幣中，發現有偽（變）造、仿造券幣時，除比照第二條辦理外，截留之偽（變）造、仿造券幣，得於每月終了五日內，彙集一次，送交中央銀行發行局處理。