Section 197.172 - Interest rate; calculation and minimum(1) Real property taxes shall bear interest at the rate of 18 percent per year from the date of delinquency until a certificate is sold, except that the minimum charge for delinquent taxes paid prior to the sale of a tax certificate shall be 3 percent.(2) The maximum rate of interest on a tax certificate is 18 percent per year. However, a tax certificate may not bear interest, and the mandatory interest as provided by s. 197.472(2) may not be levied during the 60-day period following the date of delinquency, except for the 3 percent mandatory interest charged under subsection (1).(3) Personal property taxes shall bear interest at the rate of 18 percent per year from the date of delinquency until paid or barred under chapter 95.(4) Interest shall be calculated from the first day of each month.s. 135, ch. 85-342; s.7, ch. 92-32; s.7, ch. 2011-151.