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As a King County taxpayer, you have online access to the same information about your property taxes as is available to our customer service staff. However, if you are unable to find what you need in our Frequently Asked Questions (FAQ), please call 206-263-2890 or email

2018 Property Taxes

2018 property taxes cannot be paid in 2017 because state law does not allow county treasurers to accept tax payments until the tax roll has been completed. The King County Department of Assessments will not complete certification of the new tax roll until January 2018.

King County Treasury expects to mail tax statements no later than February 14, 2018 to property owners who pay their taxes directly to King County rather than through their mortgage lender.




I know my parcel/account number

I do NOT know my parcel/account number

Second half 2017 property tax payments are now past due. Avoid further charges by paying your taxes online using our safe, secure eCommerce system.

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 this 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.

Property Tax 206-263-2890
Tax Foreclosure 206-263-2649
Personal Property Tax 206-263-2844

TTY Relay 711

Monday-Friday, 8:30 a.m. - 4:30 p.m.