The Enforcement Rules of the Land Tax Act Article 55

For application for a refund of paid land value increment tax due to land repurchase pursuant to the provisions under Article 35 of the Act, the land owner shall submit a copy of the original contractual document upon registration for sold and repurchased lands to the taxation authority at the place of the land being sold.Where the repurchased land and the sold land are located in different counties or cities, the taxation authority accepting tax refund applications pursuant to the provisions under the preceding paragraph shall file a request to the taxation authority at the place of the repurchased land in writing to verify all relevant data before processing the application. Upon approval of the refund application, all relevant data shall be distributed to the taxation office at the place of land repurchase.The taxation authority at the place of the land repurchase shall keep an inventory of the approved tax refund applications to be reviewed regularly on an annual basis. In the event that a repurchased land is found to be transferred again or changed to other uses within five years, the provisions under Article 37 of the Act shall govern.
中文原文 土地稅法施行細則第55條
土地所有權人因重購土地,申請依本法第三十五條規定退還已納土地增值稅者,應由土地所有權人檢同原出售及重購土地辦理登記時之契約文件影本,向原出售土地所在地稽徵機關辦理。
重購土地與出售土地不在同一縣市者,依前項規定受理申請退稅之稽徵機關,應函請重購土地所在地稽徵機關查明有關資料後再憑辦理;其經核准退稅後,應即將有關資料通報重購土地所在地稽徵機關。
重購土地所在地稽徵機關對已核准退稅案件及前項受通報資料,應裝冊保管,每年定期清查,如發現重購土地五年內改作其他用途或再行移轉者,依本法第三十七條規定辦理。

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