Supplementary Provisions, Article 9, paragraph (1)
第一項
The provisions of Article 203-3 of the new Income Tax Act (limited to the parts concerning a widow under the new Income Tax Act and a single parent) apply to public pensions or retirement packages payable on or after January 1, 2021, and the provisions then in force continue to govern public pensions or retirement packages payable before that date (including public pensions or retirement packages referred to in Article 203-3 of the former Income Tax Act as applied with the replacement of terms pursuant to the provisions of Article 41-17, paragraph (2) of the former Act on Special Measures Concerning Taxation).
新所得税法第二百三条の三（新所得税法の寡婦及びひとり親に係る部分に限る。）の規定は、令和三年一月一日以後に支払うべき公的年金等について適用し、同日前に支払うべき公的年金等（旧租税特別措置法第四十一条の十七第二項の規定により読み替えて適用される旧所得税法第二百三条の三の公的年金等を含む。）については、なお従前の例による。