17 January 2022
Its not delay of deposit but the delay in offsetting which will attract interest. The due date for GSTR-3B is 20th so that is the due date of payment. If you have deposited tax on 18th but you offsetted your cash ledger on 21st you will have to pay interest for one day @ 18%.pa
17 January 2022
The interest is chargeable @ 18% on the net tax liability after setting off the ITC from output tax liability. Suppose the due date for return was 20th December 2021 and you filed it on 25th Dec 2021. Tgen the interest should be calculated for (25-20) days*18%*net liability payable in cash