All property taxes become due November 1st, must be paid no later than March 31st, and become delinquent if not paid before April 1st. Set up a Payment Plan.To set up a payment plan, you must appear at a Service Location in person. When will I get my Installment bill and when is the payment due? You must make payment to the Clerk of Court within 10 business days of the date the violation was issued. Bring or mail your citation with your payment. Students can enroll in a payment plan until the day before the start of each term. Payment plan deadlines are posted on the Nelnet site.