The county of Kauai collects real property tax payments twice a year, on August 20th and February 20th.
Due to COVID-19, the August 20, 2020 Kauai real property tax payment due date has been extended to November 18, 2020.
However, the real property tax invoice, received in the mail, makes no mention of this November extension.
For more info, go to: County of Kauai Real Property Tax
