global Tax USPS Change May Affect Timely Tax Filings February 25, 2026 A recent change to U.S. Postal Service processing rules may impact how mailing dates are recorded for important documents, including tax filings. Beginning in late 2025, placing a letter in a blue USPS collection box or an internal post office drop slot no longer guarantees that the envelope will receive a postmark for the day it was dropped off. Instead, the postmark will reflect the date the mail is processed at a regional facility, which may occur on a later calendar day.For time-sensitive filings, particularly those with strict IRS deadlines, this change could create unexpected delays.To help ensure timely filing:Bring your mail directly to a USPS service counter and request a same-day manual postmarkConsider using Certified Mail or another trackable mailing optionAllow extra time when mailing documents close to a filing deadlineIf you have questions about mailing deadlines for tax documents, our team is happy to help ensure your filings are submitted on time.
