Section 63, The Goods and Services Tax Act, 2009

A person who fails to file a GST return by the due date isliable to a penalty equal to the greater of– (a) Le 1,000,000; or (b) 5 % of the GST payable for the period to which the return relates, for each month in which the return remains outstanding, until the return is filed or an assessment is issued in respect of the period to which the return relates.