In Last F/Y 2017-2018 I have filled GSTR 3B for the 2 months ( Feb and March ) late by 2 days and 6 days and late fee for the same was paid accordingly Now at the time of audit my auditer make a provision for interest on total tax liability for the said months for the said days. But there was no tax liability for the said months (i.e. input tax credit is more than total tax liabilities) Is there any rule/section to pay the interest if yes than please tell the rule/section