Advance tax for casual taxable persons must reflect eligible input tax credit, affecting registration deposit requirements. Advance tax for registration as a casual taxable person must be calculated on the estimated net tax liability after accounting for eligible Input Tax Credit. Persons operating long exhibitions beyond the permissible CTP period must register as normal taxable persons using allotment/consent letters as proof and need not pay casual-person advance tax at that registration. Where an Input Service Distributor distributes excess credit contrary to provisions, the excess plus interest and penalty is recoverable from recipient units; recipients may voluntarily deposit via FORM GST DRC-03, otherwise recovery proceedings may be initiated and FORM GST DRC-07 used, and the ISD attracts general penalty provisions.