Dear Sir,
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Your services are classified under intermediary services.
The place of supply of intermediary service is usually the location of the supplier. This situation includes the export of intermediary services as well. However, as per the general rule, the place of supply of export is outside India and therefore exports are zero-rated. Since there is a specific rule, it will prevail over the general rule, and accordingly, in case of export of intermediary services, the place of supply will be within India.
Now, when we apply the above provision to intermediary service where both the seller of goods and buyer is outside India, the location of the supplier, i.e. the location of the intermediary becomes the place of supply. This transaction gets covered under GST, despite the fact that the origin and the consumption of goods are occurring outside India.
Intermediary generally charge commission against the services provided by them. The commission income so earned is subjected to GST and all the provisions of GST law is applicable accordingly.
The rate is 18% on commission income.