skip to main content


Finance and Business Operations

Welcome to the Property Tax Online Payment Website

As a King County taxpayer, you have online access to the same information about your property taxes as is available through our customer service staff. The following self-service tools are available online for your convenience:

Your Tax Dollars at Work

If you cannot find answers to your questions in the FAQ menu, send us an e-mail via Contact - Property Tax or call 206-263-2890.

Property tax statements for 2015 were mailed on February 13. First half 2015 taxes are due or must be postmarked by April 30, 2015 to avoid delinquency charges. Prior year delinquent payments may be made at any time. Second half 2014 property taxes were due or must have been postmarked by October 31, 2014 to avoid delinquency charges. Payments made after this date will be charged late fees. To make online payment(s), go to the King County E-commerce Property Tax Web page. It may take up to a week for your property tax payment to be reflected in our records after we receive it. Even after we show your account in PAID status on our website, if your bank rejects the transaction, it can be reversed off of our system once we are notified. It is the responsibility of the taxpayer to confirm successful posting with their bank. If you pay online by electronic check (debit to your checking account), you should see this reduction in your bank account within three business days even though our system may not yet reflect the payment.

DISCLAIMER: Please be aware that the accuracy of the information you are accessing may be affected by pending payments or other changes. Therefore, King County Treasury Operations cannot warrant the accuracy, reliability or timeliness of the information, and shall not be held liable for losses caused by using this information. Any person or entity that relies on any information obtained from this system does so at their own risk.

Note: Documents on this page are available in portable document format (PDF) .

Administration Building
King County Treasury
Administration Building
500 4th Avenue, Room 600,
Seattle, WA 98104-1818
Property Tax Hotline: 206-263-2890
Foreclosure: 206-263-2649
Business Hours: 8:30 a.m. - 4:30 p.m.