The Unites States Postal Service is making changes for 2026, including the postmark process — which could mean late fees and penalties for anyone mailing time-sensitive documents such as tax returns ...

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

The U.S. Postal Service's new postmark process could lead to late fees and penalties when mailing time-sensitive documents if ...

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

The U.S. Postal Service changed when mail is postmarked as it's being processed – which could cause issues with ...

Add Yahoo as a preferred source to see more of our stories on Google. A USPS postmark is an official mark that shows where and when mail was accepted by the Postal Service. It used to include the date ...

Here's what to know about 2026 Postal Service changes in postmark process, postage stamps and USPS shipping rates ...