Auction premium is the price that the successful bidder pays in addition to the original/base price to the government. For instance, let’s assume premium is 150%, then the successful bidder pays INR 1.5 for every INR 1 (maybe ton or anything else according to the licensing condition).
If that is the case as stated above, then Auction Premium is a part of the consideration payable for the Licensing services for right to use minerals including exploration and evaluation falling under Head 997337. [Refer Notification No. 11/2017-Central Tax (Rate) dated 28.06.2017]
As 997337 is supplied by Odisha Government to the Assessee (Business Entity) then the liability to pay GST is on the assessee under RCM as envisaged by S.No. 5 of the Notification No. 13/2017- Central Tax (Rate) dated 28.06.2017.