RCM can be availed for both Intra & Inter state supplies.
Liability of GST payable under reverse charge must be calculated as under:
Identify the purchases made from unregistered persons to determine the reverse charge liability
a) Segregating the above purchases into inter-state and intra state supplies;
b) Remove the intra-state purchases of a state where there is no registration obtained;
c) Remove the intra-state or inter-state purchases which are not exempted or are nil rated
for ex: Purchase of milk, books etc.;
d) Remove the intra-state or inter-state purchases which are not leviable to GST For ex:
Petrol, diesel, electricity etc.;
e) Remove the intra-state or inter-state purchases which are purchased from a person who
is not in any business i.e. not being a supplier.
f) Segregate the intra state purchases portion on day wise;
g) Remove the ones below ₹ 5,000/- per day;
h) Identifying Place of supply in case of inter-state purchases from unregistered persons;
i) Identifying the classification code for such supplies
j) Apply the appropriate rate of tax and compute GST payable on purchases from
unregistered persons;
k) Identify supplies notified to be taxable under reverse charge. For ex: advocates, GTA,
sponsorships;
l) Identifying the classification code for such supplies;
m) Apply the appropriate rate of tax and compute GST payable on notified supplies under
reverse charge;
n) In case of e-commerce operator the above calculation needs to be done for shifting of
charge also.
o) Raise a consolidated monthly invoice mentioning all the taxable supplies subject to
reverse charge as per the mandatory requirement of a tax invoice.
Once the above calculation is performed, total taxable value and tax on inward supplies liable
under reverse charge must be disclosed in Form GSTR 3B.