The Enforcement Rules of the Land Tax Act Article 38

In the event that the taxpayer or taxpayer’s proxy has made double or undue payments for agricultural land grain tax or the imposed rice acquisition, said taxpayer or proxy may apply for a refund or a payment offset for the corresponding grain tax or rice acquisition of the following term pursuant to Article 28 of the Taxation Act. Said application shall be submitted to and handled by the competent taxation authority in conjunction with the local competent authority of food administration. However, only grain tax payment may be refunded. Applications for the refund or offsetting of the agricultural land tax in-lieu cash payment does not need to be handled in conjunction with the local competent authority of food administration.The refunded agricultural land grain tax or rice acquired upon taxation pursuant to the preceding paragraph shall be made with grains submitted in the current term and of the same class of the original submitted grains. For the refund of the rice acquired upon taxation, first calculate the total rice acquisition price according to the government-approved rice acquisition unit price of the current term, and then pay the amount to the designated public grain warehouse to make the grain refund.
中文原文 土地稅法施行細則第38條
納稅義務人或代繳義務人如有重複或錯誤繳納田賦及隨賦徵購稻穀時,得依稅捐稽徵法第二十八條之規定申請主管稽徵機關會同當地糧政主管機關辦理退還或抵繳次期應繳田賦及隨賦徵購稻穀。
但納稅義務人或代繳義務人得僅申請退還田賦實物;其申請退還或抵繳田賦代金者,免由當地糧政主管機關會辦。
依前項規定退還之田賦實物及隨賦徵購稻穀,應以退還當期之新穀,並以原繳納之同一種類稻穀退還之。
其退還隨賦徵購稻穀,應先行按退還時當期政府核定隨賦徵購單價格計算其徵購稻穀價款,繳付於指定退還實物經收公糧倉庫後予以退還。

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