2026 fiscal calendar
Know the tax date before it becomes a penalty date.
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The verified record below separates published figures from dates that require confirmation with Coconino County Assessor's Office.
Effective rate
no single current effective countywide percentage was published in the official sources reviewed; Arizona tax rates vary by taxing district.
Statement mailing
current official source reviewed does not publish a 2026 tax-bill mailing date.
Payment deadline
First installment due October 1, 2026 and delinquent after November 1, 2026 at 5:00 p.m.; second installment due March 1, 2027 and delinquent after May 1, 2027 at 5:00 p.m.; if total tax is $100 or less, full payment is due October 1 and delinquent November 1 at 5:00 p.m.
Valuation protest
For 2027 real-property Notices of Value mailed February 10, 2026, the Assessor deadline was April 13, 2026; the Board of Equalization deadline was June 15, 2026. The standard rule is no later than 60 days after the Notice of Valuation postmark/deadline shown on the notice.
Critical payment warning
Do not assume a grace period.
The verified county 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 the published payment deadline as a hard operational date and retain your receipt or confirmation number.
Read the calendar in order
From assessment to collection
1. Valuation 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.
2. Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
3. Payment 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.