WASHINGTON DC — Starting in 2026, changes to how the U.S. Postal Service handles postmarks could affect anyone mailing time-sensitive documents, including ballots, tax returns, and rent checks.
Traditionally, a postmark reflected the date an item was dropped off at a mailbox or post office. Under the new process, postmarks will instead show the date the mail is processed by an automated sorting machine — which could be several days later. That delay could result in late fees or missed deadlines for certain documents.
To avoid potential problems, the USPS recommends:
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Mailing important items early
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Requesting a hand-stamped postmark at the counter
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Using certified mail for added tracking and proof of mailing
Meanwhile, shipping rates for Priority Mail, Priority Mail Express, and USPS Ground Advantage will increase beginning January 18. The price of a First-Class stamp will remain 78 cents, at least for now.
The Postal Service is also rolling out modernized post office lobbies, featuring smart lockers, digital displays, and expanded self-service options aimed at improving customer convenience.