Income Tax Act Article 72

The period for filing an annual income tax return as provided in Paragraph 1 of Article 71-1 may, before the time limit and under special circumstances, through the application of the will executors, or heirs, or estate administrator and upon the approval of the tax authority, be extended to a date not later than the time limit prescribed for filing an estate tax return.Any taxpayer as provided in Paragraph 2 of Article 71-1 and Article 73 may, under the special circumstances of being unable to file his/her/its tax return within the time limit or file by himself/herself/itself, appoint an individual residing in the territory of the Republic of China to file a tax return and make a tax payment on his/her/its behalf with the approval of the tax authority. In the case of a delinquent payment or failure to entrust a certified public accountant or any other lawful agent to file the tax return and make a tax payment on his/her/its behalf, the tax authority may notify the exit/entry control office to deny exit clearance to such a taxpayer.
中文原文 所得稅法第72條
第七十一條之一第一項規定之申報期限,遺囑執行人、繼承人或遺產管理人,如有特殊情形,得於結算申報期限屆滿前,報經稽徵機關核准延長其申報期限。
但最遲不得超過遺產稅之申報期限。
第七十一條之一第二項及第七十三條規定之納稅義務人,如有特殊情形,不能依限或自行辦理申報納稅者,得報經稽徵機關核准,委託中華民國境內居住之個人負責代理申報納稅;如有欠繳稅款情事或未經委託會計師或其他合法代理人代理申報納稅者,稽徵機關得通知主管出入國境之審核機關,不予辦理出國手續。

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