City taxes shall be due and payable on the first day of July of each year. To all taxes there shall be added one percent as an administrative fee. To all taxes paid after September 30, there shall be added a two percent penalty. The added administrative fee, penalties and interest herein provided shall belong to the City and shall constitute a charge and shall be a lien against the property to which the taxes themselves apply, collectible in the same manner as the taxes to which they are added.