Democracy Docket – “The United States Postal Service (USPS) finalized a rule on postmarks to reflect changes in its mail pickup processes that could cause an uptick in blown deadlines for documents sent by post, including mail-in ballots…By the time the overhaul is finished, it’ll affect pick-ups at roughly 24,000 of the country’s 33,700 post offices, impacting roughly 149 million Americans across 70% of U.S. zip codes. Trump has long opposed mail in voting, blaming it — without evidence — for his loss in the 2020 elections, even calling for a complete ban…”

The United States Postal Service (USPS) has adopted a final rule (FR Doc. 2025-20740) adding Section 608.11, “Postmarks and Postal Possession,” to the Domestic Mail Manual (DMM). The rule formally defines postmarks and identifies the types of markings that qualify as such. Its primary purpose is to improve public understanding that while a postmark confirms the USPS possessed a mail piece on the date inscribed, that date does not necessarily align with the date the USPS first accepted possession of the item. The rule clarifies that the USPS does not postmark all mail in the ordinary course of operations and that the absence of a postmark does not imply the USPS did not accept custody. Impact on Postmarking Timing: The rule clarifies that the date displayed on a machine-applied postmark represents the “date of the first automated processing operation” performed at a processing facility, rather than the date the mail was dropped off.

• Potential Delays: Because most postmarks are applied at processing facilities, the date inscribed may be later than the date the mail piece was first accepted by the USPS. This discrepancy is expected to become more common due to the implementation of the “Regional Transportation Optimization” (RTO) initiative and the adoption of “leg-based” service standards.
• Operational Reality: The rule codifies the operational reality that postmarking operations often cross calendar days or occur after transportation from a retail unit, meaning the postmark date is not a “perfectly reliable indicator” of the date of mailing.

Ensuring a Postmark on the Date of Delivery: To assure a postmark is applied on the same day a document is delivered to the USPS, individuals must utilize specific retail services. The final rule outlines the following methods…

This change in USPS processes will have a potentially significant impact on tax filings. IRC §7502 specifically relies upon the postmark date applied to an envelope to determine timely filing if the document is not physically delivered to the IRS office by the due date for such document.