New Ammendment In Act Applicable when CBEC notify it by Notification

ACT 2018 (31, 2018) Date 29/8/2018

2) Save as otherwise provided, the provisions of this Act shall come into force on
such date as the Central Government may, by notification in the Official Gazette, appoint:
Provided that different dates may be appointed for different provisions of this Act and
any reference in any such provision to the commencement of this Act shall be construed as
a reference to the coming into force of that provision