Thank you all for you valuable opinion.
However, I am unable to understand where in the Act is it mentioned that interest will be levied on the entire output tax amount. Section 50 mentions 'to pay tax' , there is no clarification whether 'to pay tax' means net liability after tax or full output liability.
In addition the amount in ITC in Electronic Credit Ledger is not something I can remove or take refund of (considering I do not fall in Sec 54/55 refund provisions), the ITC is with the Government. Only because of the machinery provision of filing of a GSTR 3B return that it needs to be debited could be questioned.
Also, in case of high volume output tax of a taxpayer where ITC is in excess and delay of filing return due to some unavoidable reason, the interest could be exponentially high just because the return was delayed. Wherein the taxpayer is paying prescribed late fee for filing the return.
Please let me know if any views on the above. Appreciate the responses. Thank you.