The United States Postal Service (USPS) has announced changes to its postmark process and shipping rates, effective in 2026. The new postmark rule, which took effect on December 24, 2025, alters the way postmarks are applied to mail. Previously, a postmark indicated the date when mail was dropped off at a mailbox or post office counter. Under the new rule, the postmark will reflect the date when the mail is first processed by an automated sorting machine, which may occur days after the mail is deposited. This change could lead to late fees and penalties for time-sensitive documents such as tax returns and bill payments.

In addition to the postmark changes, USPS is also increasing shipping rates for various services starting January 18, 2026. While the cost of a First-Class Mail stamp remains at $0.78, rates for Priority Mail, Priority Mail Express, USPS Ground Advantage, and Parcel Select are set to rise. Priority Mail prices will increase by approximately 6.6%, with starting prices at $10.45 for packages and $11.90 for flat-rate envelopes. Priority Mail Express will see a 5.1% increase, starting at $32.50 for packages. USPS Ground Advantage rates will rise by 7.8%, beginning at $7.20.

USPS is also modernizing its retail locations, introducing redesigned lobbies equipped with technology aimed at improving customer experience. Features will include 24/7 smart lockers, enhanced self-service kiosks, and digital information displays. Tracy Raymond, director of retail operations, stated that these upgrades are intended to meet customer expectations for speed and convenience while maintaining the personal service associated with USPS.

Consumers are advised to mail time-sensitive items several days before deadlines to avoid potential issues with late postmarks. Alternatively, individuals can request a hand-stamped postmark at their local post office on the date of mailing.