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 Maricopa 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
September 2026
Payment deadline
First half due October 1, 2026 and delinquent after November 1, 2026; second half due March 1, 2027 and delinquent after May 1, 2027; full-year payment by December 31, 2026 avoids first-half interest.
Valuation protest
April 21, 2026 for the 2027 real-property Notice of Value appeal deadline (2027 NOV mailed February 20, 2026).
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.