①If a Resident who is required to file a return under Article 120, paragraph (1) (Filing Income Tax Returns) dies between January 1 of the year following the relevant year and the deadline for filing that year's return without having filed that return, unless the Resident's heir files a return under the following paragraph, the heir must file the return with the district tax office director by the day before that which marks four months' time since the day after the heir learns of the commencement of the succession (or by the start of the heir's Absence From Japan, if the heir becomes Absent From Japan prior to that date; hereinafter the same applies in this Article), as prescribed by Cabinet Order.

②If a Resident who may file a return pursuant to paragraph (1) of the preceding Article dies between January 1 of the year following the relevant year and the deadline for filing that year's return without having filed a return, the Resident's heir may file the return with the district tax office director by the day before that which marks four months' time since the day after the heir learns of the commencement of the succession, as provided by Cabinet Order.