State of Illinois
01/27/2026 | Press release | Distributed by Public on 01/27/2026 13:49
FY 2026-17, Changes to United States Postal Service on Postmarks Could Impact Illinois Tax Filings
FY 2026-17, Changes to United States Postal Service on Postmarks Could Impact Illinois Tax Filings
News - Tuesday, January 27, 2026
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The United States Postal Service (USPS) has announced changes to postmarks that could impact tax filings in 2026. While the USPS postmark will still show the date of the first automated processing operation, the postmark may no longer reflect the date when the piece of mail was dropped off at a local post office. This change can directly impact time-sensitive documents such as tax returns and payments.
See Informational Bulletin FY 2026-17, Changes to United States Postal Service on Postmarks Could Impact Illinois Tax Filings for more information.
State of Illinois published this content on January 27, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on January 27, 2026 at 19:49 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]