If a return as under Article 124, paragraph (1) (Filing a Tax Return If the Person Required to File Has Died) (including as applied mutatis mutandis pursuant to Article 125, paragraph (5) (Filing a Tax Return If the Taxpayer Has Died Partway Through the Year)) or Article 125, paragraph (1) indicates an amount set forth in Article 120, paragraph (1), item (iii) (Amount of Income Taxes Indicated in Income Tax Returns), the person filing the return due to circumstances falling under any of those provisions must pay income taxes to the national government in an amount equivalent thereto by the deadline for filing the return, as prescribed in Article 5 (Succession to the Obligation to Pay National Taxes Based on Hereditary Succession) of the Act on General Rules for National Taxes.
定義第二条第一項第三十七号・法令全体に適用
第二編第五章第二節第一款及び第二款(確定申告)(第百六十六条において準用する場合を含む。)の規定による申告書(当該申告書に係る期限後申告書を含む。)
わかりやすく言うと
確定所得申告や確定損失申告、年の途中で死亡し又は出国する場合の確定申告など、第百二十条から第百二十七条までの規定により出す申告書のことで、期限後申告書も含みます。第百六十六条で非居住者に準用する場合も含みます。