Changes made by CGST (Amendment) Act, 2018, IGST (Amendment) Act, 2018, UTGST (Amendment) Act, 2018 and GST (Compensation to States) Amendment Act, 2018 and the corresponding changes in SGST Acts would be notified w.e.f. February 01, 2019.
Read more at: http://www.pib.nic.in/PressReleseDetail.aspx?PRID=1557060