Chelan County, Washington property-tax payment and appeal deadlines
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The reviewed record below separates published figures from items that still require confirmation with Chelan County Assessor; Chelan County Treasurer collects property taxes.
Rate context
ConfirmChelan County publishes parcel/tax-code-area levy rates rather than one countywide effective rate.
Statement mailing
PublishedMid-March 2026; the county's 2026 notice said statements were delayed and should arrive around mid-March, while the general calendar says statements are mailed around mid-February.
Payment deadline
PublishedApril 30, 2026 for the first half and October 31, 2026 for the second half; the county's 2026 calendar also lists July 1 as the Board of Equalization petition deadline, dependent on Notice of Value mailing.
Valuation protest
PublishedJuly 1, 2026 or within 30 days of the mailing date printed on the Notice of Value, whichever is later, for the Chelan County Board of Equalization.
Do not assume a grace period.
The reviewed record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat a published payment deadline as a hard operational date and retain your receipt or confirmation number.
From assessment to collection
01Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
02Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
03Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.