As of September 7th, a 6% penalty interest has been assessed to any past due 1st installment payments and a 1.5% penalty interest has been assessed to any past due 2nd installment payments. October 7th will mark the next additional 1.5% interest. In addition, a $10 fee will be added on 10/7 for the certified final notice. We continue to honor postmark for payments that are dated September 6th or before.