Enforcement Rules of the Tax Collection Act Article 17

When the tax collection authority makes a decision to impose a fine under the provisions set out in Article 50-2 of the Act, the tax collection authorities shall issue and deliver to the taxpayer a written decision for imposition of a fine along with a Penalty Payment Slip.In the event that the person subject to the penalty disagrees with and has initiated an administrative remedy appeal only against the decision on the amount of supplementary tax, and the final decision made in the administrative appeal results in an alteration or revocation of the original decision to the extent affecting the amount of the fine originally imposed, the tax collection authority shall be responsible, ex officio, for adjusting the amount of such fine to be imposed accordingly.
中文原文 稅捐稽徵法施行細則第17條
稅捐稽徵機關依本法第五十條之二規定為罰鍰處分時,應填具裁處書及罰鍰繳款書送達受處分人。
受處分人如僅對於應繳稅捐不服提起行政救濟,經變更或撤銷而影響其罰鍰金額者,稅捐稽徵機關應本於職權更正其罰鍰金額。

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