Input tax credit proportionate to consideration unpaid beyond...

Input tax credit proportionate to consideration unpaid beyond 180 days must be added to output tax liability, and interest runs from availment until a financial or commercial credit note is received and recorded. A supplier's full waiver through such a credit note leaves no unpaid supply value and permits retention of original-invoice credit because the note does not reduce transaction value or invoice tax; beneficial Board clarifications bind departmental officers. Recorded unpaid balances and a bona fide view, later supported by clarification, do not establish fraud, wilful misstatement, or suppression merely because audit detected the issue. The GST demand for credit and penalty fail, while interest for the intervening period remains payable.