Maricopa property owners who have not handled their 2026 Pinal County tax bill still have a short window before the first installment becomes delinquent.
The first half was due Oct. 1. Pinal County's published rule says the installment ordinarily becomes delinquent after 5 p.m. Nov. 1, but Nov. 1 falls on a Sunday in 2026. When a delinquency date lands on a Saturday, Sunday or legal holiday, the county moves the cutoff to 5 p.m. on the next business day. That makes Monday, Nov. 2, at 5 p.m. the practical first-half cutoff this year.
That date matters most for annual bills over $100, which may be divided into two installments. It does not mean every tax bill follows the same schedule.
Start with the amount of the annual bill
The Pinal County Treasurer's FAQ separates bills into two groups:
Annual taxes over $100: The first half was due Oct. 1 and becomes delinquent after the Nov. 2 cutoff this year. The second half is due March 1 and ordinarily becomes delinquent after May 1.
Annual taxes of $100 or less: The full amount was due Oct. 1 and becomes delinquent after 5 p.m. Dec. 31.
The Treasurer also lists Dec. 31 at 5 p.m. as the full-year payment deadline. That does not erase the earlier first-half delinquency rule for bills over $100. The FAQ says interest on an unpaid first installment begins from the time of delinquency, even when an owner later pays the full year. Check the current parcel balance rather than assuming a Dec. 31 payment will carry no interest.
Check the parcel before sending money
The Treasurer's Parcel Inquiry lets owners search by parcel number, owner or property. It provides the amount due, payment history, tax bill, coupon and receipts.
The county warns that the system updates nightly and is not real time. A payment made during the current business day may not appear immediately. Save the receipt or confirmation and check again after the next update.
Homeowners whose mortgage company pays through escrow should not assume the bill has already been processed. The Treasurer says mortgage companies may apply payment on the actual due date and recommends checking the online payment history, then contacting the mortgage company if the expected payment is missing.
A missing paper bill also does not suspend the deadline. Pinal County describes mailed statements as a courtesy and says the owner remains responsible for making sure the taxes are paid. Owners who did not receive a statement should verify the mailing address held by the Assessor.
Payment routes and the local office
Owners can use the official Treasurer site to reach the payment system. The FAQ also allows bank bill pay, but the payment must be scheduled early enough to be received by the Treasurer by the deadline. Use “Pinal County Treasurer” as the payee, enter the parcel number without dashes and create a separate transaction for each parcel.
For mailed checks, make the check payable to Pinal County Treasurer, include the payment coupon or parcel number, and use:
Pinal County Treasurer
P.O. Box 729
Florence, AZ 85132-0729
Maricopa has a Treasurer satellite office at 19955 N. Wilson Ave., Building 100. Its posted hours are Monday through Friday, 8 a.m. to 4:30 p.m., with a noon-to-1 p.m. closure. A drop box is located to the left of the front doors. The county emphasizes that due times are based on the Florence office and that satellite offices may be closed, so confirm the local office status before relying on an in-person visit near the cutoff.
The Treasurer's toll-free number is 888-431-1311.
What happens after delinquency
Pinal County says delinquent taxes bear simple interest at 16% annually. A fraction of a month counts as a whole month, prorated at 1.33% per month, and additional fees may apply.
That makes the useful sequence straightforward:
Look up the parcel and confirm whether the annual bill is over $100.
Check whether an escrow company has paid.
Choose a payment route that can be received on time.
Save the confirmation and recheck after the nightly update.
Contact the Treasurer if the balance or payment history does not match your records.
Residents reviewing the broader cost of owning a home can also use OurMaricopa's new resident guide, high-water-bill checklist and housing page.
The key distinction is easy to miss: Oct. 1 was the due date, while Nov. 2 at 5 p.m. is this year's first-half delinquency cutoff for bills that qualify for installments.
Sources
Pinal County Treasurer — “Frequently Asked Questions.” Official FAQ. Accessed Oct. 5, 2026. Source for installment thresholds, due and delinquency rules, interest, escrow guidance, bank bill pay and mailing instructions.
Pinal County — “Important Property Tax Dates.” Official tax calendar. Accessed Oct. 5, 2026. Source for the Oct. 1 due date and next-business-day rule when Nov. 1 falls on a weekend or holiday.
Pinal County Treasurer — “Parcel Inquiry.” Official lookup. Accessed Oct. 5, 2026. Source for lookup options and the nightly-update limitation.
Pinal County Treasurer — “Maricopa Office.” Official office page. Accessed Oct. 5, 2026. Source for the Wilson Avenue address, hours and drop-box location.