Land Tax Act Article 34-1

When a landowner applies for the land value increment tax to be levied at the rate applicable to self-use residential land, they must indicate the designation of "self-use residential" on the land present value declaration form and submit the certificate of building improvements. If the designation is not indicated, the landowner may supplement the application to the local tax authority before the payment deadline; late applications for the self-use residential land tax rate will not be accepted.For land ownership transfers where the right holder is required to independently declare the land transfer present value or in cases where such declaration is not required, the tax authority shall proactively notify the landowner. If the land meets the criteria for self-use residential land, the landowner must apply within 30 days from the day following receipt of the notification. Late applications will not qualify for the self-use residential land tax rate on the land value increment tax.
中文原文 土地稅法第34-1條
土地所有權人申請按自用住宅用地稅率課徵土地增值稅,應於土地現值申報書註明自用住宅字樣,並檢附建築改良物證明文件;其未註明者,得於繳納期間屆滿前,向當地稽徵機關補行申請,逾期不得申請依自用住宅用地稅率課徵土地增值稅。
土地所有權移轉,依規定由權利人單獨申報土地移轉現值或無須申報土地移轉現值之案件,稽徵機關應主動通知土地所有權人,其合於自用住宅用地要件者,應於收到通知之次日起三十日內提出申請,逾期申請者,不得適用自用住宅用地稅率課徵土地增值稅。

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