2026 Property Tax Due Dates
Official SourceFirst installment
August 20
Second installment
February 20
Late Penalty
Up to 10% penalty + 1% monthly interest
Payment Methods
Online, mail, in-person
Kauai Treasurer
How to Pay Kauai Property Taxes
📬
By Mail
Send check to county treasurer
🏢
In Person
Visit treasurer's office
Related Resources
Get Deadline Reminders
We'll email you 2 weeks before your property taxes are due.