Article 125Filing a Tax Return If the Taxpayer Has Died Partway Through the Year
第百二十五条（年の中途で死亡した場合の確定申告）
If the circumstances, when a Resident dies partway through the year, constitute a case in which a return under Article 120, paragraph (1) (Filing Income Tax Returns) must be filed in connection with the Resident's income taxes for the year, unless the Resident's heir files a return under paragraph (3), the heir must file a return with the district tax office director, giving information that includes what is set forth in the items of Article 120, paragraph (1) with regard to those income taxes, 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.
If the circumstances, when a Resident dies partway through the year, constitute a case in which it is permissible to file a return under Article 122, paragraph (1) or paragraph (2) (Filing a Return to Receive a Refund) in connection with the Resident's income taxes for the year, unless the Resident's heir is permitted to file a return under the following paragraph, the heir may file a return with the district director, giving information that includes what is set forth in the items of Article 120, paragraph (1) and the items of Article 122, paragraph (1) with regard to those income taxes, as prescribed by Cabinet Order.
If the circumstances, when a Resident dies partway through the year, constitute a case in which it is permissible to file a return under Article 123, paragraph (1) (Filing Tax Returns Showing Losses) in connection with the Resident's income taxes for the year, the Resident's heir may file a return with the district tax office director, giving information that includes what is set forth in the items of paragraph (2) of that Article with regard to those income taxes, by the day before that which marks four months' time since the day after the heir learns of the commencement of the succession, as prescribed by Cabinet Order.
The provisions of the second sentence of Article 120, paragraph (1) apply mutatis mutandis to the information to be given in a return under paragraph (1) or paragraph (2), and the provisions of paragraphs (3) through (7) of that Article apply mutatis mutandis to the filing of a return under the preceding three paragraphs. In such a case, the term "Filing Deadline" in paragraph (5) of that Article is deemed to be replaced with "Filing Deadline (or the day on which the return is filed, if the return is a return of refund claim as prescribed in Article 61, paragraph (1), item (ii) (Special Provisions for Base Period for Calculation of Amount of Delinquent Tax) of the Act on General Rules for National Taxes)", and the term "Act on General Rules for National Taxes" is deemed to be replaced with "that Act".
Paragraph (1) applies mutatis mutandis if the person who is required to file a return under paragraph (1) dies prior to the deadline for filing the return without having filed it, and paragraph (2) of the preceding Article applies mutatis mutandis if the person who is permitted to file a return under paragraph (3) dies prior to the deadline for filing the return without having filed it.