Liability of GST on basis of time of supply :
The liability to pay CGST/SGST on the goods and services shall arise at the time of supply of goods and services, as determined in accordance with provisions of section 12 of CGST Act – section 12(1) of CGST Act.
Major change is in respect of payment of GST on advances received – One major departure from existing provisions is that GST on goods and services is payable when advance is received. Presently, there is such provision in respect of service tax but not in case of Central Excise, CST or State Vat.