(1) Every person, who, during the previous year, carried on the business of a hotel in relation to which this Act applies or is assessable in respect of the chargeable receipts of any other person under this Act, shall furnish a return of his chargeable receipts or the chargeable receipts of such other person of the previous year in the prescribed form and verified in the prescribed manner and setting forth such other particulars as may be prescribed, before the expiry of four months from the end of the previous year in respect of the business of the hotel or where there is more than one previous year in respect of such business, from the end of the previous year which expired last before the commencement of the assessment year, or before the 30th day of June of the assessment year, whichever is later:
          Provided that, on an application made in this behalf, the Income- tax Officer may, in his discretion, extend the date for furnishing the return.
          (2) In the case of any person who, in the Income-tax Officer's opinion is assessable under this Act, whether in respect of his own chargeable receipts or in respect of the chargeable receipts of any other person, the Income-tax Officer may, before the end of the relevant assessment year, issue a notice to him and serve the same upon him, requiring him to furnish within thirty days from the date of service of the notice a return of his chargeable receipts or the chargeable receipts of such other person of the previous year in the prescribed form and verified in the prescribed manner and setting forth such other particulars as may be prescribed:
          Provided that on an application made in this behalf, the Income-tax Officer may, in his discretion, extend the date for furnishing the return.
          (3) Any assessee who has not furnished a return within the time allowed under sub-section (1) or sub-section (2), or having furnished a return under sub-section (1) or sub-section (2), discovers any omission or wrong statement therein, may furnish a return or a revised return, as the case may be, at any time before the assessment is made.