IDOR Alerts Taxpayers to Postal Service Changes that Could Impact Tax Filings

The Illinois Department of Revenue is warning residents about a significant change from the U.S. Postal Service that could affect this year’s tax season. The postmark on mailed items may no longer reflect the exact day tax documents were dropped off at the local post office. This update could create complications for those relying on last-minute mailings to meet the April 15th tax deadline. Officials urge taxpayers to send returns and payments earlier than usual to avoid penalties or late filings. Electronic filing remains an option for those seeking certainty around submission dates.