437. Every registrant who is required to file a return under this chapter shall in the return calculate his net tax for the reporting period for which the return is required to be filed.
Where the net tax for a reporting period of a registrant is a positive amount, the registrant shall remit that amount to the Minister on or before the day on or before which the return for that period is required to be filed.
Where the net tax for a reporting period of a registrant is a negative amount, the registrant may claim in the return for that reporting period that amount as a net tax refund for the period, payable to the registrant by the Minister.
The first and second paragraphs apply, with such modifications as are required, to a person described in section 433.