Chelan County property tax is calculated by multiplying your property’s assessed value by the combined levy rate of every taxing district covering your parcel. For 2026, the countywide average rate is about $7.60 per $1,000 of assessed value, though your actual rate depends on your city, school district, fire district, and other local jurisdictions. Payment is due in two installments: the first half by April 30 and the second half by October 31.1Washington State Department of Revenue. 2026 Property Tax Calendar
How Your Bill Is Calculated
Every property in Chelan County is appraised at its true and fair market value as of January 1 of the assessment year.2Washington State Legislature. Washington Code 84.40.020 – Assessor to List All Taxable Property The Assessor looks at recent sales of comparable properties, the condition of your buildings, and the characteristics of your land. That assessed value is the starting point, not the bill itself.
The second piece is the levy rate, expressed in dollars per $1,000 of assessed value. Each taxing district that serves your property — the county, your school district, fire district, library district, hospital district, and others — adds its own levy to the combined rate applied to your parcel. If your home is assessed at $400,000 and your combined levy rate is $8.00 per $1,000, your annual tax is $3,200.
Washington caps how fast each district can grow its regular levy: no more than one percent per year without voter approval (or the rate of inflation, whichever is lower, for districts with 10,000 or more residents).3Washington Department of Revenue. Property Tax – How The 1% Property Tax Levy Limit Works Voter-approved levies and bonds can push the rate higher. Your bill can still jump in years when new levies pass or when your assessed value rises faster than the rest of the county.
How and When to Pay
If your total annual tax is less than $50, the full amount is due by April 30. Otherwise, pay half by April 30 and the balance by October 31. Mailed payments must be postmarked on or before the due date; a late postmark counts as a late payment regardless of when the envelope arrives.
The Chelan County Treasurer accepts payments through an online portal, by mail, and through drop boxes at the courthouse in Wenatchee. The online system takes electronic checks and credit cards, though credit card transactions carry a processing fee of roughly 2.5 percent. Mailed payments should be personal checks, cashier’s checks, or money orders made payable to the Chelan County Treasurer.
You’ll need your parcel number to look up your balance or pay online. The Chelan County Assessor’s parcel search tool at pacs.co.chelan.wa.us lets you search by address or owner name. Your parcel number also appears on your annual tax statement, which breaks down exactly how much goes to each taxing district.
If you have a mortgage, your lender likely pays your taxes through an escrow account. Even then, you’re ultimately responsible for making sure the tax gets paid on time, because a missed payment creates a delinquency against the property, not the lender. Check your balance each year through the Treasurer’s website.
What Happens If You Pay Late
Missing a deadline triggers interest that accrues immediately. For residential property of four units or fewer, Washington law sets the interest rate at nine percent annually (0.75 percent per month). For commercial property, larger residential buildings, and personal property, the rate climbs to 12 percent annually (one percent per month), plus flat penalties of three percent on June 1 and eight percent on December 1, each calculated on the full unpaid annual amount. These charges cannot be waived.
If taxes remain unpaid for three years, the Treasurer is required to issue a certificate of delinquency and begin foreclosure. You can redeem the property by paying all back taxes, interest, and costs up until the close of business the day before the auction sale.4Washington State Legislature. Washington Code Chapter 84.64 – Lien of Taxes After that, the property is gone.
Senior and Disabled Person Exemption
Washington offers a significant property tax break for seniors and people with disabilities who own and occupy their home as a primary residence. You qualify if you are at least 61 years old by December 31 of the year you file, or retired from regular employment due to a disability. Veterans receiving VA disability compensation at a combined service-connected rating of 40 percent or higher, or with a total disability rating, also qualify.5Washington State Legislature. Washington Code 84.36.381 – Residences, Property Tax Exemptions, Qualifications
The size of the exemption depends on your household’s combined disposable income measured against three thresholds, each tied to a percentage of Chelan County’s median household income and adjusted every three years:6Washington State Legislature. Washington Code 84.36.383 – Exemptions, Definitions
- Income Threshold 1, at 50 percent of county median, provides the largest exemption, eliminating all excess levies and freezing the value on which regular levies are calculated.
- Income Threshold 2, at 60 percent of county median, exempts you from excess levies and partially freezes your assessed value.
- Income Threshold 3, at 70 percent of county median, exempts you from excess levies only.
The dollar amounts for these thresholds change with each adjustment cycle; the Washington Department of Revenue publishes current figures for the applicable tax year. Applications go through the Chelan County Assessor’s office. Once approved, you’ll renew at least once every six years.7Washington Department of Revenue. Property Tax Exemptions and Deferrals
Deferral Programs
If you qualify for the senior or disabled exemption but still can’t cover the remaining tax, Washington lets you defer payment. Deferral doesn’t reduce your tax. It postpones payment until you sell the home, move out, or pass away, at which point the deferred taxes plus interest come due. The state places a lien on the property to secure the amount.
A separate deferral exists for homeowners with limited income regardless of age or disability. Applications for the limited-income deferral are due by September 1.7Washington Department of Revenue. Property Tax Exemptions and Deferrals Both programs require you to own and occupy the home as your primary residence, and the Chelan County Assessor’s office handles intake for both.
Appealing Your Property Valuation
If the Assessor set your property’s value too high, you can challenge it. The appeal is worth pursuing when you have solid evidence, because even a modest reduction lowers your tax bill every year going forward. The strongest cases involve recent comparable sales showing lower values, a recent independent appraisal, or documented physical problems like deferred maintenance or structural damage.
File a petition with the Chelan County Board of Equalization. Under Washington Administrative Code 458-14-056, petitions must be received by July 1 of the assessment year or within 60 days of the date on your value change notice, whichever is later. The Board holds a hearing, reviews your evidence against the Assessor’s, and issues a decision.
If the Board rules against you, you can escalate to the Washington State Board of Tax Appeals within 30 days of the mailing date of the Board of Equalization’s order.8Washington State Board of Tax Appeals. Property Tax Appeal The state board offers an informal process (faster, but its decision cannot be appealed further) and a formal process (which preserves your right to appeal to Superior Court). Two arguments that don’t work: disagreeing with your tax amount without challenging the value, and pointing to a neighbor’s lower assessed value. The Board can only adjust your property’s value. Tax rates are set by the districts and are not part of the appeal.
Relief for Destroyed Property
If your property is damaged or destroyed by fire, flood, wind, or another involuntary cause, you can apply for a reduction in assessed value and a partial refund or abatement of taxes already paid.9Washington Department of Revenue. Destroyed Property The claim must be filed with the Chelan County Assessor within three years of the date of destruction.10Washington Department of Revenue. Destroyed Property Frequently Asked Questions If the Assessor already knows about the damage, they can initiate the reduction without a formal application.
No relief is available if the owner is convicted of arson related to the property.10Washington Department of Revenue. Destroyed Property Frequently Asked Questions If you disagree with the Assessor’s reduced value, you can appeal to the Board of Equalization within 30 days of notification or by July 1, whichever is later. A full rejection of the application, however, cannot be appealed to the Board.