A. One to ten days late, five percent of tax due;

B. Eleven to twenty days late, eight percent of tax due;

C. Twenty-one to thirty-one days late, ten percent of tax due;

D. Thirty-two to sixty days late, fifteen percent of tax due; but in no event shall the penalty amount be less than ten dollars. In addition to this penalty, the city clerk may charge the taxpayer interest of one percent of all taxes and fees due for each thirty-day period, or portion thereof, that the amounts are past due.