Payments

Property tax collection for the current year cannot occur until the certification of the roll by the Treasurer's office (with the exception of personal property advance tax and long plat advance tax). At least one-half of the taxes due must be paid or postmarked by April 30th to avoid interest and penalty charges. If the first half is paid on time, the due date for payment of the remainder is October 31st. Taxes in an amount less than fifty dollars are to be paid in full by April 30th.

The Treasurer's office accepts a maximum of two bank-rolled rolls of coin.

Make checks payable to the Kittitas County Treasurer. NSF checks will be assessed a $35.00 fee per Resolution 2024-013.

Missing tax payments: The US Postal Service has informed us that some mail sent to offices in the Kittitas County Courthouse the week of March 24-28 may be lost or missing. If you have not seen your payment posted, please call the Treasurer’s office for assistance.

Payments by Credit, Debit and eCheck

Payment Portal - click picture below

Electronic Valuation Notices

You will be charged a convenience fee for these types of payments.
(Credit card = 2.5% of payment amount, Debit card = $3.95, eCheck = $2.00)
Accepts most Credit cards, Debit cards & Bank cards

Note: You will need your parcel number and tax amount

  • By phone:

    1-866-279-1721.
  •  

Payments by mail

During peak tax payment times please allow 10 business days for check processing

Kittitas County Treasurer
205 W 5th AVE STE 102
Ellensburg, WA 98926

Payments in person

Kittitas County Treasurer
Kittitas County Courthouse
205 W 5th AVE STE 102
Ellensburg, WA 98926
9:00am – 4:00pm Monday through Friday (except holidays and posted closures)

Upper Kittitas County District Court Offices
700 E 1st ST
Cle Elum WA 98922
1:00pm – 4:00pm Tuesdays and Fridays in April and October.

View a map or get driving directions

Payments made under Protest

Per RCW 24.68.020, a person, firm or corporation may pay their taxes under protest. Information about the requirements for making a payment under protest can be found on the Washington State Department of Revenue website.