197.162  Discounts; amount and time.--On all taxes assessed on the county tax rolls and collected by the county tax collector, discounts for early payment thereof shall be at the rate of 4 percent in the month of November or at any time within 30 days after the mailing of the original tax notice; 3 percent in the month of December; 2 percent in the following month of January; 1 percent in the following month of February; and zero percent in the following month of March or within 30 days prior to the date of delinquency if the date of delinquency is after April 1. For the purposes of this section, when a discount period ends on a Saturday, Sunday, or legal holiday, the discount period shall be extended to the next working day, if payment is delivered to a designated collection office of the tax collector.