What type of GST is proposed to be implemented?

It would be a dual GST with the Centre and States
simultaneously levying it on a common tax base. The GST
to be levied by the Centre on intra-State supply of goods
and / or services would be called the Central GST (CGST)
and that to be levied by the States would be called the State
GST (SGST). Similarly Integrated GST (IGST) will be levied
and administered by Centre on every inter-state supply of
goods and services