This Act comes into effect on the date of promulgation; provided, however, that the provisions set forth in the following items come into effect on the dates specified in those items:

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 business years 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) starting on or after April 1, 2011 and corporation tax on consolidated income for consolidated business years of a consolidated corporation starting on or after that date, and with regard to corporation tax on income for business years of a corporation that started before that date and corporation tax on consolidated income for consolidated business years of a consolidated corporation that started before that date, the provisions then in force continue to govern.

The provisions of Article 2, item (xii)-14 of the New Corporation Tax Act apply to a contribution in kind effected on or after the date on which this Act comes into effect (hereinafter referred to as the "Effective Date"), and with regard to a contribution in kind effected before the Effective Date, the provisions then in force continue to govern.

The provisions of Article 33, paragraph (5) of the New Corporation Tax Act apply to revaluations prescribed in paragraphs (2) and (3) of that Article that a corporation makes on or after the Effective Date and to the facts prescribed in paragraph (4) of that Article that arise on or after the Effective Date.

The provisions of Article 66, paragraph (6) (limited to the part pertaining to item (iii)) and Article 67, paragraph (1) of the New Corporation Tax Act apply to corporation tax on income for business years of a corporation starting on or after April 1, 2011 (excluding a business year ending before the Effective Date), and with regard to corporation tax on income for business years of a corporation that started before April 1, 2011 (including a business year that started on or after that date and ended before the Effective Date), the provisions then in force continue to govern.

The provisions of Article 81-9, paragraph (5) of the New Corporation Tax Act (limited to the part pertaining to item (iv)) apply to corporation tax on consolidated income for an applicable consolidated business year prescribed in that item of a consolidated parent corporation starting on or after April 1, 2011 (excluding an applicable consolidated business year prescribed in that item ending before the Effective Date).

①The provisions of Articles 133 and 134 of the New Corporation Tax Act apply to interest on a refund pertaining to a refund under those provisions for which payment is decided or appropriation is made on or after January 1, 2012; provided, however, that with regard to the calculation of the whole or part of that interest on a refund that corresponds to the period before that date, the provisions then in force continue to govern.

②With regard to interest on a refund pertaining to a refund under Article 133 or 134 of the Corporation Tax Act prior to the amendment by the provisions of Article 2 for which payment was decided or appropriation was made on or before December 31, 2011, the provisions then in force continue to govern.

The provisions of Article 143, paragraph (5) of the New Corporation Tax Act (limited to the part pertaining to item (iii)) apply to corporation tax on income for business years of a foreign corporation starting on or after April 1, 2011 (excluding a business year ending before the Effective Date).

With regard to the application of penal provisions to acts committed before this Act (or, for the provisions set forth in the items of Article 1 of the Supplementary Provisions, those provisions; the same applies hereinafter in this Article) comes into effect and to acts committed after this Act comes into effect in the cases where the provisions then in force continue to govern pursuant to the provisions of these Supplementary Provisions, the provisions then in force continue to govern.

Beyond what is provided for in these Supplementary Provisions, transitional measures necessary in connection with the enforcement of this Act are specified by Cabinet Order.