Deed Tax Act Article 16

The taxpayer shall, within thirty days from the date of establishment of a real estate sale, setting Dien right, exchange, bestowal or donation, or partition contract, or within thirty days from the date of application for ownership by occupation in accordance with the law, complete the Deed Tax Declaration Form, a submit the standardized contract and related documents, and file the deed tax return to the local competent tax authority. However, for the first registration of ownership of a building that has not been registered, the buyer and seller shall jointly file the tax.When disputes arise in real estate transfers, the starting date for filing deed tax shall be based on the date of the court's final judgment.For purchases or acquisitions of government property, the starting date for filing deed tax shall be the date on which the government agency issues the property transfer certificate.For real estate acquired through court auctions, the starting date for filing deed tax shall be the date on which the court issues the certificate of transfer of rights.Before the completion of construction, in cases of sale, exchange, or bestowal or donation of buildings, and the recipient’s name stated on the construction license as original or subsequently changed builder, the starting date for filing of deed tax shall be thirty days after the issuance date of the license of permit issued by the competent construction authority.
中文原文 契稅條例第16條
納稅義務人應於不動產買賣、承典、交換、贈與及分割契約成立之日起,或因占有而依法申請為所有人之日起三十日內,填具契稅申報書表,檢附公定格式契約書及有關文件,向當地主管稽徵機關申報契稅。
但未辦建物所有權第一次登記之房屋買賣、交換、贈與、分割,應由雙方當事人共同申報。
不動產移轉發生糾紛時,其申報契稅之起算日期,應以法院判決確定日為準。
向政府機關標購或領買公產,以政府機關核發產權移轉證明書之日為申報起算日。
向法院標購拍賣之不動產,以法院發給權利移轉證明書之日為申報起算日。
建築物於建造完成前,因買賣、交換、贈與,以承受人為建造執照原始起造人或中途變更起造人名義並取得使用執照者,以主管建築機關核發使用執照之日起滿三十日為申報起算日。

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