1129.61. Where a corporation is required to pay tax under this Part in respect of one month in a calendar year, it shall, before 1 March of the following calendar year,(a) file with the Minister, without notice or demand therefor, a return for the year under this Part in prescribed form;
(b) estimate, in the return, the amount of tax payable under this Part by it in respect of each month in the year; and
(c) pay to the Minister the amount of tax payable under this Part by it in respect of each month in the year.