If income under the provisions of Subparagraphs 2 to 8, Paragraph 1 of Article 7 meets one of the following conditions, the income may be excluded from the amount of basic income of a profit-seeking enterprise:
1. In the case where an approval of tax exemption has been granted by the Ministry of Finance by the date when this Act comes into force.
2. In the case where an investment plan has been completed or a certificate of completion has been given by the competent authority of the enterprise by the date when this Act comes into force and provided that an approval of tax exemption is granted by the Ministry of Finance within one year following the year when this Act comes into force.
3. In the case where an investment plan has been approved with a letter of approval given by the competent authority of the enterprise and implementation of which plan has been commenced by the date when this Act comes into force and provided that the product or service item described in the plan has not been changed.
4. In the case where an investment plan has been approved with a letter of approval given by the competent authority of the enterprise, and though not yet being commenced by the date when this Act comes into force, provided that such plan is commenced within one year following the year when this Act comes into force and be completed within three years after the date next following the date when the approval is given, and the product or service item described in the plan has not been changed.
5. In the case where a private institution has entered with the authority-in-charge into an agreement in connection with participation in an infrastructure project by the date when this Act comes into force, provided that the project has been commenced and completed in accordance with the agreement, and provided that there have been no changes in the investment plan except in circumstances where the authority-in-charge has required a change in the content of the agreement.

The enforcement rules of this Act shall be prescribed by the Ministry of Finance.

This Act shall come into force on January 1, 2006, except as stipulated otherwise; however, the provisions under Article 15 shall come into force on January 1, 2007.
The Articles of this Act amended and promulgated on August 8, 2012 shall come into force in fiscal year 2013. The effective date of the amendments promulgated on May 10, 2017 shall be decided by the Executive Yuan. The Articles of this Act amended on December 30, 2020 shall come into force on January 1, 2021.