USPS Postmark Change

Published on January 27, 2026

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Effective December 24, 2025, U.S. Postal Service updated its rules, meaning most automated, machine-applied postmarks now reflect the date an item is first processed at a regional facility, rather than the date it was dropped off. The Collector of Revenue must use a USPS postmark for interest purposes, therefore, please make sure you allow several extra days for delivery, especially near deadlines, as automated processing may not occur immediately. You can also visit a post office retail counter and request a hand-stamped, manual postmark to guarantee the current day’s date. 
The last day to pay the second installment of real estate and personal property taxes as well as supplemental motor vehicle taxes is February 2, 2026. Any tax payments with a postmark of February 3, 2026, or later will accrue interest at 1.5% per month from the due date, January 1st. 

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