GST on Tobbaco leaves Export to Egypt

Chisty Mohammad (36 Points)

22 September 2018  
firm is sole proprietorship,
GST registration done in August -2017,
till now no GST return filed till now,
but it's not a issue.. return will be filed with late fees,



till July-2018 No Business i.e nill return,

now in August-2018 month,

1 sale invoice which is IGST (Egypt) sale,

seller given invoice in USD say 20,000 USD..,


no separate IGST shown in invoice,

commodity is (purchase tobacco leave from farmer and supply to Egypt)

now what is the tax treatment in GST
how to calculate USD to INR
selling date = dollar conversion..

give some advice .....