Snohomish County Treasurer Updates

  1.      Treasurer Brian Sullivan
    Brian Sullivan

    Brian Sullivan has proudly served the people of Snohomish County for over 30 years. He became one of our most well-respected leaders in the community and has truly made a difference to the people who needed it most.

    Brian was elected to the Mukilteo City Council at the age of 23, which gave him his start in the public sector and the opportunity to become the Mayor of Mukilteo at the age of 29; he is considered one of Mukilteo's most well-loved mayors.

    He continued in his passion to make a positive impact in our county by serving in the Washington House of Representatives as a State Representative from 2001 to 2007.

    Brian has served three terms representing the 2nd Council District as Chair, which includes the cities of Everett, Mukilteo, as well as areas of unincorporated Snohomish County and the Tulalip Indian Reservation. In addition to working as a Snohomish County Councilman Brian was also a Chair on the Finance and Economic Development Committee and the Snohomish County Health Board.

    Currently Brian is proudly serving as the Snohomish County Treasurer, which oversees payment and maintenance of approximately 300,000 parcels in Snohomish County and manages investments and funds for outside districts which includes fire and school districts. The Treasurer's office operates with the utmost care and accuracy and transparency for all citizens and agencies that we conduct business with.

    The Customer Service Center is currently closed to the public for the health of our staff and the public.

    The tax payment drop box is now open for payment of property taxes by check. The drop box is located on the County Campus across from the café outside of the Administration East building.

    • Tax payment drop box checked weekdays
    • No cash payments
    • No excise documents or excise payments

    If mailing your payment please allow 7-10 business days for your tax payment to post. 

    Due Dates: 
    • First half taxes are due by postmark April 30th, 2021.

    • The second half taxes are due by postmark October 31st, 2021.

    Property Tax Payments:

    • Check payments may be mailed as normal. Please do not put your payment in the County Campus Ballot Drop Boxes.
    • Credit card payments may be made over the phone by calling 833-440-3332 or by visiting our payment site.

    Excise Tax:
    We cannot guarantee documents submitted by our previous cutoff times will be processed same day through the month of February. Excise transactions can be sent through the mail. If you have any questions please call 425-388-3888.

    Other questions please see our contact list, or call 425-388-3366 or email

Pay Taxes Online


Treasurer Public Records