Payment is said to be made when the funds are debited in the bank account of the registered person and credited to the Electronic Cash Ledger. Subsequent reducing the same amount from cash ledger while filing GSTR-3B is mere appropriation of money paid towards tax earlier. For example if the tax was paid by debit to OD/CC account of the registered person then bank would start charging interest from the date on which some amount is paid by debit to such OD/CC account.
Further, interest is compensatory in nature and is payable when the amount is not paid on due date, from the due date till actual date of payment - SC Pratibha Processors.
Proviso inserted from 10.07.2024 is clarificatory in nature as it merely clarifies the intent of the legislature that if the money was paid earlier by the taxpayer before the due date of filing of GSTR-3B, then even though it lies in Electronic Cash Ledger till GSTR-3B is actually filed no interest can be levied and collected from such taxpayer as for late filing of GSTR-3B there is already a late fees charged to the taxpayer.