Benton County, Oregon 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 Benton County Department of Assessment / Benton County Financial Services Tax Office.
Rate context
Confirmno single countywide effective rate is published; Oregon property taxes vary by local taxing district.
Statement mailing
PublishedNo later than October 25, 2026; the official Benton County Assessment FAQ states property tax statements are mailed no later than October 25.
Payment deadline
PublishedFor tax year 2026, full payment is due November 15, 2026 for a 3% discount; a 2/3 payment is due November 15 with the final 1/3 due May 15, 2027; three installments are due November 15, 2026, February 15, 2027, and May 15, 2027.
Valuation protest
PublishedFor tax year 2026, Property Value Appeals Board petitions are accepted after tax statements are mailed through December 31, 2026; the official Benton County page states the filing deadline is December 31.
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.