Washington County, Utah 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 Washington County Assessor.
Rate context
ConfirmWashington County states rates vary by school district, city, and special-service district; no single countywide 2026 effective rate is published.
Statement mailing
Confirmthe current official Washington County Treasurer page reviewed does not publish a specific 2026 tax-bill mailing date; Utah notices are generally mailed before November 1.
Payment deadline
Published2026 Utah real-property taxes are due on or before November 30, 2026; taxes unpaid after November 30 (or the next business day when applicable) are delinquent and subject to statutory penalty and interest. Official guidance: https://tax.utah.gov/commission/appeals/locally-assessed/
Valuation protest
PublishedFor 2026 Washington County property, appeal to the Board of Equalization by September 15, 2026 or within 45 days after the valuation notice is mailed, whichever is later; Washington County states valuation notices are mailed at the end of July. Official FAQ: https://www.washco.utah.gov/departments/assessor/frequently-asked-questions/property-valuation-faqs/
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.