Input Tax Credit recovery: excess credit from an ISD must be returned or recovered with interest and penalties. Clarifies that advance tax for a casual taxable person must be calculated on the estimated net tax liability after eligible input tax credit; long-running exhibitors exceeding the casual period must register as normal taxable persons using allotment letters as place-of-business proof and need not pay advance tax for normal registration; and excess credit distributed by an ISD must be recovered from recipients with interest and penalty, with recipients allowed to voluntarily deposit excess credit or face recovery proceedings, while the ISD is also liable to general penalty provisions.