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 before 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 2011-002.

Credit, Debit and eCheck payments

You will be charged a convenience fee for these types of payments.
(Credit card = 2.49% 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

Payments by AutoPay (ACH)

The Kittitas County Treasurer now offers the ability to pay property taxes automatically through enrollment in AutoPay. Your tax payment(s) will automatically be deducted from your United States bank account. To sign up for AutoPay, you must fill out and return the AutoPay Authorization Agreement and a voided check or a verification letter from your bank to the Kittitas County Treasurer’s office by March 15 or September 15 prior to the first due date for which you want your taxes paid automatically. Your Autopay enrollment will remain in effect until the Kittitas County Treasurer has received written notification to change or cancel your enrollment no less than thirty (30) days prior to your account being debited.

Payments by mail

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