In terms of Section 25(4) of the CGST Act, 2017, every person who is required to obtain separate registration for every branch located in different state or union territory shall be treated as distinct persons. Accordingly, the supply of goods (stock transfers) to a branch located outside the State would qualify as supply, liable to tax in terms of clause 2 to Schedule I of the CGST Act, 2017. Further, it is important to note that, supply of goods to a branch / unit located within the same State having separate registration would also be liable to tax since both such units (supplying unit and recipient unit) would qualify as distinct person in terms of Section 25(4).
(ICAI FAQ PUBLICATIONS 06-09-2017 SCOPE OF SUPPLY : FAQ NO. 5)