892.11  PAYMENT SCHEDULE.
   At the time of confirmation of a special assessment roll, Council shall, in its resolution, state the number of installments in which the assessment is to be paid, the due date of the first and subsequent installments and the rate of interest to be charged on unpaid installments, which rate shall not exceed twelve percent per year. However, the whole assessment, after confirmation, may be paid to the City Treasurer at any time in full with accrued interest thereon.