Some customers may not receive USPS same-day postmark. Here's how to make sure you get it

USPS changed what a postmark means. That is a problem. 

How changes to USPS postmarks could impact your tax returns, bills and more

What to know about USPS postmark changes and the impact on bills, taxes and election ballots

A new U.S. Postal Service rule will affect the postmark dates on your mail

USPS changes could impact customers, cause fees

🚨 THE POST OFFICE JUST BECAME A WEAPIZED SYSTEM. They didn’t change the stamps. They changed the stakes. A new USPS rule that took effect December 24, 2025, alters how postmarks are verified for legal deadlines. Tax returns. Court filings. Immigration appeals. This isn’t “administrative.” This is architectural. They’ve introduced ambiguity into the system that proves you met a deadline. Why? Ambiguity is a space the state can occupy. It means a letter you mailed on time can be logged “late.” Yo