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