Section 21 in The Integrated Goods and Services Tax Act
Title: Import of services made on or after the appointed day
Import of services made on or after the appointed day shall be liable to tax under the provisions of this Act regardless of whether the transactions for such import of services had been initiated before the appointed day:
Provided that if the tax on such import of services had been paid in full under the existing law, no tax shall be payable on such import under this Act:
Provided further that if the tax on such import of services had been paid in part under the existing law, the balance amount of tax shall be payable on such import under this Act.
Explanation.––For the purposes of this section, a transaction shall be deemed to have been initiated before the appointed day if either the invoice relating to such supply or payment, either in full or in part, has been received or made before the appointed day.
Title: Power to make rules
(1) The Government may, on the recommendations of the Council, by notification, make rules for carrying out the provisions of this Act.
(2) Without prejudice to the generality of the provisions of sub-section (1), the Government may make rules for all or any of the matters which by this Act are required to be, or may be, prescribed or in respect of which provisions are to be or may be made by rules.
(3) The power to make rules conferred by this section shall include the power to give retrospective effect to the rules or any of them from a date not earlier than the date on which the provisions of this Act come into force.
(4) Any rules made under sub-section (1) may provide that a contravention thereof shall be liable to a penalty not exceeding ten thousand rupees.
Title: Power to make regulations
The Board may, by notification, make regulations consistent with this Act and the rules made thereunder to carry out the provisions of this Act.
Title: Laying of rules regulations and notifications
Every rule made by the Government, every regulation made by the Board and every notification issued by the Government under this Act, shall be laid, as soon as may be, after it is made or issued, before each House of Parliament, while it is in session, for a total period of thirty days which may be comprised in one session or in two or more successive sessions, and if, before the expiry of the session immediately following the session or the successive sessions aforesaid, both Houses agree in making any modification in the rule or regulation or in the notification, as the case may be, or both Houses agree that the rule or regulation or the notification should not be made, the rule or regulation or notification, as the case may be, shall thereafter have effect only in such modified form or be of no effect, as the case may be; so, however, that any such modification or annulment shall be without prejudice to the validity of anything previously done under that rule or regulation or notification, as the case may be.
Title: Removal of difficulties
(1) If any difficulty arises in giving effect to any provision of this Act, the Government may, on the recommendations of the Council, by a general or a special order published in the Official Gazette, make such provisions not inconsistent with the provisions of this Act or the rules or regulations made thereunder, as may be necessary or expedient for the purpose of removing the said difficulty:
Provided that no such order shall be made after the expiry of a period of three years from the date of commencement of this Act.
(2) Every order made under this section shall be laid, as soon as may be, after it is made, before each House of Parliament.