Treasurer

We encourage you to consider paying electronically – refer to Quick Links and select “Paying Your Taxes Online.” Payments do not update on website for 2 business days.

Property taxes for 2025 are certified (PDF) and statements are expected to be mailed prior to Feb. 25, 2025. Any unpaid balances remaining from prior periods are delinquent.

Balance information is currently posted on this website. View Property Information.

The due date for property taxes in Island County is April 30. Second half balances are due Oct. 31.

The property taxes paid to the Island County Treasurer are redistributed to the State of Washington to fund public schools, the special purpose districts that provide services (hospital districts, school districts, cities, fire districts, parks and recreation districts, diking districts, drainage districts, the library district, emergency medical services, etc.), and Island County (roads and public services). These districts require tax revenues to continue operations and provide services for county residents. Additionally, many have outstanding bond issues with debt service payments due June 1 and Dec. 1. On behalf of the state and districts, we appreciate your prompt payments.

If you do not receive a tax statement by mail, request that one be emailed to you.

Failure to receive a statement by mail does not absolve the taxpayer of the responsibility to make timely payment per RCW 84.56.020. Checks received without appropriate interest and/or penalties included will be returned as a short payment.

Where Your Tax Dollar is Going in 2025