USPS makes more changes to cut costs, improve service in 2026. Know how postmarks work to avoid late fees on bills, taxes.

What is new at the post office in 2026? Here's what to know about Postal Service changes in postmark process, postage stamps ...

If you're mailing any time-sensitive documents, you may want to mail it earlier than usual under the agency's new postmark ...

The United States Postal Service has changed the postmark process going into 2026, which potentially could add late fees and penalties to parcels.