Section 56 Bis For the purpose of tax collection prior to the time limit under Section 56, the taxpayer liable to file a tax return under Sections 56, 57, 57 Bis, and 57 Ter shall file a tax return in the form prescribed by the Director-General, within the month of September of every tax year, reporting only the income under Section 40 (5), (6), (7) or (8) derived during the period from January to June. 37