Supplementary Provisions, Article 50Principles of Transitional Measures Concerning Special Provisions on Corporation Tax upon the Partial Amendment of the Act on Special Measures Concerning Taxation
第五十条（租税特別措置法の一部改正に伴う法人税の特例に関する経過措置の原則）
Unless otherwise provided, the provisions of Chapter III of the New Act on Special Measures Concerning Taxation apply to corporation tax for business years of a corporation (including an association or foundation without juridical personality prescribed in Article 2, paragraph (2), item (ii) of the Act on Special Measures Concerning Taxation; hereinafter the same applies up to Article 62 of the Supplementary Provisions) beginning on or after the Effective Date, and the provisions then in force continue to govern corporation tax for business years of a corporation that began before the Effective Date.
別段の定めがあるものを除き、新租税特別措置法第三章の規定は、法人（租税特別措置法第二条第二項第二号に規定する人格のない社団等を含む。以下附則第六十二条までにおいて同じ。）の施行日以後に開始する事業年度分の法人税について適用し、法人の施行日前に開始した事業年度分の法人税については、なお従前の例による。