The assessment of taxes herein made and the returns required therefor shall be for the year ending December 31. If the taxpayer, in exercising a privilege taxable under this article, keeps the books reflecting the same on a basis other than the calendar year, he may, with the consent of the City Treasurer, make his annual returns and pay taxes for the year covering his accounting period as shown by the method of keeping his books.
(1970 Code Sec. 29-25)