Code of Civil Procedure Article 77-21

In cases where a motion for issuance of a payment order is deemed to be the initiation of an action or a motion for mediation in accordance with the provision of the first paragraph of Article 519, the court costs or filing fees shall be taxed in full in accordance with the provisions of Article 77-13 or Article 77-20.In such cases, the party moving for issuance of a payment order may have the filing fees that were paid for that motion deducted from the court costs or filing fees to be paid in accordance with the provision of the preceding paragraph.
中文原文 民事訴訟法第77-21條
依第五百十九條第一項規定以支付命令之聲請視為起訴或聲請調解者,仍應依第七十七條之十三或第七十七條之二十規定全額徵收裁判費或聲請費。
前項應徵收之裁判費或聲請費,當事人得以聲請支付命令時已繳之裁判費扣抵之。

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