The Regulations of Tariff Quota Article 8

Whilst quota is allocated by the method of first-come first-serve, the Customs shall announce if the quantity of declaration reaches certain volume, and shall examine and release the imported goods after that the procedure of allocation is performed by the Ministry of Finance or the delegated organization or the entrusted authorization. In view of the need to retrieve imported goods in advance, the duty-payers can pay the guaranty deposit equivalent to the amount of customs duties calculated by out-quota tariff rate and apply for the release of imported goods.The certain volume referred to in preceding Paragraph and the allocation method of goods referred to in Article 5 of the Regulations shall be announced at the same time.The importers can not request for applying the in-quota tariff rate to imported goods if the importers submit declarations over 15days from the arrival date of transportation means carrying such goods and the quota has been allocated.
中文原文 關稅配額實施辦法第8條
依進口貨物先到先配方式核配關稅配額者,其報關數量達一定額度時,海關應公告,並俟財政部或其委任或委託之機關(構)分配作業完成後,再據以徵稅驗放;納稅義務人如有先行提貨之必要者,得按配額外稅率計算應納關稅之數額繳納保證金,申請驗放。
前項之一定額度,應於貨物適用之分配方式依第五條規定公告時,一併公告。
進口人未自裝載貨物之運輸工具進口日起十五日內,向海關辦理報關時,數量已核配完畢者,不得要求適用配額內稅率課稅。

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