This Act comes into effect on April 1, 1981; provided, however, that the provisions set forth in the following items come into effect on the dates specified respectively in those items:

The provisions of Chapter II of the Act on Special Measures Concerning Taxation as amended (hereinafter referred to as the "New Act") apply to income tax for 1981 and subsequent years, except as otherwise provided, and with regard to income tax for 1980 and prior years, the provisions then in force continue to govern.

①With regard to income tax in the case where an individual prescribed in Article 10-2, paragraph (1) of the Act on Special Measures Concerning Taxation prior to the amendment (hereinafter referred to as the "Former Act") put industrial conversion equipment, etc. prescribed in that paragraph of which the individual made an acquisition, etc. (meaning acquisition, manufacture or construction; the same applies in the following Article) before the Effective Date of this Act (hereinafter referred to as the "Effective Date") to use for the business prescribed in that paragraph, the provisions of Article 10-2 of the Former Act remain in force. In this case, the phrase "if there is an amount to be deducted, that amount" in paragraph (2) of that Article is deemed to be replaced with "if there is an amount to be deducted, or if there is an amount to be deducted from the amount of income tax on the amount of gross income for that year pursuant to the provisions of Article 10-2, paragraph (3) of the Act on Special Measures Concerning Taxation prior to the amendment by the Act Partially Amending the Act on Special Measures Concerning Taxation (Act No. 6 of 1984; hereinafter referred to as the "1984 Amendment Act"), which is to remain in force pursuant to the provisions of Article 3, paragraph (1) of the Supplementary Provisions of the 1984 Amendment Act, Article 10-2, paragraph (3) of the Act on Special Measures Concerning Taxation as amended by the 1984 Amendment Act, or Article 5, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the Act on Special Measures Concerning Taxation (Act No. 15 of 1979; hereinafter referred to as the "1979 Amendment Act"), those amounts", and the phrase "Article 10-2, paragraph (1) of the Act on Special Measures Concerning Taxation" in paragraph (6) of that Article is deemed to be replaced with "Article 10-2, paragraph (1) of the Act on Special Measures Concerning Taxation prior to the amendment by the Act Partially Amending the Act on Special Measures Concerning Taxation (Act No. 13 of 1981; hereinafter referred to as the "1981 Amendment Act"), which is to remain in force pursuant to the provisions of Article 3, paragraph (1) of the Supplementary Provisions of the 1981 Amendment Act".

②With regard to the application of the provisions of Article 10-2 of the Act on Special Measures Concerning Taxation as amended by the Act Partially Amending the Act on Special Measures Concerning Taxation (Act No. 6 of 1984) (hereinafter referred to as the "Act on Special Measures Concerning Taxation as Amended in 1984") in the case where the provisions of the preceding paragraph apply, the phrase "if there is an amount to be deducted, that amount" in paragraph (4) of that Article is deemed to be replaced with "if there is an amount to be deducted, or if there is an amount to be deducted from the amount of income tax on the amount of gross income for that year pursuant to the provisions of Article 10-2, paragraph (2) of the Act on Special Measures Concerning Taxation prior to the amendment by the Act Partially Amending the Act on Special Measures Concerning Taxation (Act No. 13 of 1981; hereinafter referred to as the "1981 Amendment Act"), which is to remain in force pursuant to the provisions of Article 3, paragraph (1) of the Supplementary Provisions of the 1981 Amendment Act, those amounts".

①The provisions of Article 12 of the New Act apply where an individual puts industrial machinery, etc. prescribed in paragraph (1) of that Article of which the individual makes an acquisition, etc. on or after the Effective Date to use for the individual's business, and with regard to cases where an individual put industrial machinery, etc. prescribed in Article 12, paragraph (1) of the Former Act of which the individual made an acquisition, etc. before the Effective Date to use for the individual's business, the provisions then in force continue to govern.

②The provisions of Article 12-2, paragraph (2) of the New Act apply where an individual puts medical equipment prescribed in that paragraph which the individual acquires or manufactures on or after the Effective Date to use for the individual's business, and with regard to cases where an individual put medical equipment prescribed in Article 12-2, paragraph (2) of the Former Act which the individual acquired or manufactured before the Effective Date to use for the individual's business, the provisions then in force continue to govern.

③The provisions of Article 12-3, paragraph (1) of the New Act apply to machinery, etc. for business rationalization prescribed in that paragraph which is specified in a business rationalization plan prescribed in that paragraph for which a small and medium sized enterprise prescribed in that paragraph receives approval on or after the Effective Date, and with regard to machinery, etc. for business rationalization prescribed in Article 12-3, paragraph (1) of the Former Act which is specified in a business rationalization plan prescribed in that paragraph for which a small and medium sized enterprise prescribed in that paragraph received approval before the Effective Date, the provisions then in force continue to govern. In this case, with regard to the application of the provisions of Article 12-3, paragraph (1) of the New Act to machinery, etc. for business rationalization prescribed in that paragraph which is specified in a business rationalization plan prescribed in that paragraph for which a small and medium sized enterprise prescribed in that paragraph receives approval during the period from the Effective Date to March 31, 1982, the phrase "20 percent" in that paragraph is deemed to be replaced with "one-quarter", and the phrase "10 percent" with "one-eighth".

④The provisions of Article 13, paragraph (1) of the New Act (limited to the part pertaining to vehicles and transport equipment) apply to vehicles and transport equipment prescribed in that paragraph of which an individual makes an acquisition, etc. on or after the Effective Date.

⑤The provisions of Article 14, paragraph (1) of the New Act apply to rental housing prescribed in that paragraph which an individual acquires or newly constructs on or after the Effective Date, and with regard to rental housing prescribed in Article 14, paragraph (1) of the Former Act which an individual acquired or newly constructed before the Effective Date, the provisions then in force continue to govern.

①With regard to income tax for 1981 on business income arising from a sale in the case where an individual prescribed in Article 25, paragraph (1) of the Former Act, during the period from January 1, 1981 to December 31, 1981, sold beef cattle prescribed in that paragraph which the individual raised at a market referred to in that paragraph, or sold male dairy calves prescribed in that paragraph which the individual raised by entrusting the sale to an agricultural cooperative or a federation of agricultural cooperatives referred to in that paragraph, that individual may follow the provisions of that Article; provided, however, that this does not apply where the individual receives the application of the provisions of Article 25 of the New Act for income tax for that year.

②An individual who receives the application of the provisions of the main clause of the preceding paragraph must state that fact in the final return.

①The provisions of Article 41-9, paragraph (1) of the New Act apply to the extension of the due date for payment pursuant to the provisions of that paragraph pertaining to income tax of an individual for 1981 and subsequent years, and with regard to the extension of the due date for payment pursuant to the provisions of Article 41-9, paragraph (1) of the Former Act pertaining to income tax for 1980 and prior years, the provisions then in force continue to govern.

②The provisions of Article 41-10 of the New Act apply to income tax for which permission for payment in installments is granted pursuant to the provisions of paragraph (1) of that Article on or after the Effective Date, and with regard to income tax for which permission for payment in installments was granted pursuant to the provisions of Article 41-10, paragraph (1) of the Former Act before the Effective Date, the provisions then in force continue to govern.

③The provisions of Article 41-11 of the New Act apply to the extension of the due date for payment pursuant to the provisions of paragraph (1) of that Article pertaining to income tax of an individual for 1981 and subsequent years, and with regard to the extension of the due date for payment pursuant to the provisions of Article 41-11 of the Former Act pertaining to income tax for 1980 and prior years, the provisions then in force continue to govern.

The provisions of Chapter III of the New Act apply to corporation tax for business years of a corporation (including an association or foundation without juridical personality prescribed in Article 2, item (viii) of the Corporation Tax Act (Act No. 34 of 1965); the same applies hereinafter) commencing on or after the Effective Date, except as otherwise provided, and with regard to corporation tax for business years of a corporation that commenced before the Effective Date, the provisions then in force continue to govern.

The provisions of Article 42 of the New Act apply to corporation tax on income for business years of a domestic corporation prescribed in paragraph (1) of that Article ending on or after the Effective Date, and with regard to corporation tax on income for business years of that domestic corporation that ended before the Effective Date, the provisions then in force continue to govern.