USPS Postmark Changes May Affect Tennessee Tax Filing Timeliness
Summary
The United States Postal Service announced changes to the application of postmarks that may affect whether certain Tennessee tax filings mailed to the Department of Revenue are considered timely. Taxpayers filing by mail should consult TN DOR Notice 26-09 for guidance on how these changes impact filing and payment timeliness determinations.
What changed
The United States Postal Service announced changes to postmark application that may impact whether certain tax filings mailed to the Tennessee Department of Revenue are deemed timely. These changes affect the evidentiary value of postmarks for establishing filing dates.
Tennessee taxpayers who file tax returns or payments by mail should verify that their submissions are properly postmarked by USPS on or before the applicable deadline to ensure timely filing status. Affected parties should consult TN DOR Notice 26-09 for complete details on acceptable proof of mailing and how the postmark changes affect Tennessee tax filing requirements.
What to do next
- Refer to TN DOR Notice 26-09 for specifics on USPS postmark changes
- Contact TN DOR for additional guidance on tax filing timeliness requirements
Archived snapshot
Apr 16, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Important Notice: United States Postal Service Changes to Postmarks
Friday, March 27, 2026 | 04:22pm The United States Postal Service announced changes to the application of postmarks that may affect whether certain Tennessee tax filings mailed to the Department of Revenue are considered timely. Read more about how this affects the filing and payment of Tennessee taxes in important notice #26-09.
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