Value-added and Non-value-added Business Tax Act Article 49

In the event that a business entity fails to file the sales amount or a detailed list of uniform invoices used within the time limit as prescribed by in this Act, the business entity shall be liable to a delinquent reporting surcharge. The surcharge shall be equivalent to 1% of the tax payable for every two days overdue, provided that the filing is less than 30 days past due. The administrative fine shall not be less than NT$1,200 or more than NT$12,000. If the filing is in excess of 30 days past due, the business entity shall be liable to a non-reporting surcharge equivalent to 30% of the tax payable, as determined by the competent tax authority. The amount of this surcharge shall not be less than NT$3,000 or more than NT$30,000. Where there is no tax payable, the surcharges for delinquent reporting and non-reporting shall be NT$1,200 and NT$3,000 respectively.
中文原文 加值型及非加值型營業稅法第49條
營業人未依本法規定期限申報銷售額或統一發票明細表,其未逾三十日者,每逾二日按應納稅額加徵百分之一滯報金,金額不得少於新臺幣一千二百元,不得超過新臺幣一萬二千元;其逾三十日者,按核定應納稅額加徵百分之三十怠報金,金額不得少於新臺幣三千元,不得超過新臺幣三萬元。
其無應納稅額者,滯報金為新臺幣一千二百元,怠報金為新臺幣三千元。

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