Except as otherwise provided in these Supplementary Provisions, the provisions of the Corporation Tax Act as amended by the provisions of Article 2 (hereinafter referred to as "the New Corporation Tax Act") apply to corporation tax on income for a business year of a corporation (including an association or foundation without juridical personality prescribed in Article 2, item (viii) of the New Corporation Tax Act; the same applies hereinafter) beginning on or after the Effective Date and to corporation tax on consolidated income for a consolidated business year of a consolidated corporation beginning on or after the Effective Date, and with regard to corporation tax on income for a business year of a corporation that began before the Effective Date and corporation tax on consolidated income for a consolidated business year of a consolidated corporation that began before the Effective Date, the provisions then in force continue to govern.