For failure to pay a tax when due, the Tax Collector shall add a penalty of 10% of such tax on the last day of each month after the due date thereof; provided, that the amount of such penalty to be added shall in no event exceed 50% of the amount of the tax due.
('64 Code, § 13-32) (Ord. 50, passed - - ; Ord. 397, passed 3-22-71)