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Illinois Tax Postmark Changes Could Impact Filings

The Illinois Department of Revenue (IDOR) has issued a notice regarding changes to United States Postal Service (USPS) postmarks that could impact tax filings in 2026. The USPS postmark may no longer reflect the actual drop-off date, potentially affecting time-sensitive documents like tax returns and payments.

Illinois Film Production Tax Withholding Changes

The Illinois Department of Revenue has issued a notice regarding changes to withholding income tax for film production and loan-out companies, effective December 12, 2025. Public Act 104-0453 clarifies responsibilities for paying and reporting Illinois income tax withheld from compensation for services performed in the state.

Illinois DOR: Free Income Tax Preparation Assistance

The Illinois Department of Revenue (IDOR) is alerting taxpayers to a scam involving fraudulent text messages and websites. IDOR also announced that free income tax preparation assistance is available for qualifying low-to-moderate income families and older adults for their 2025 income taxes.

Illinois DOR: 2026 Tax Processing Season Update Webinar Registration

The Illinois Department of Revenue (IDOR) is announcing a free webinar on March 11, 2026, to provide updates on the 2026 tax processing season. The webinar will cover various tax topics including electronic commerce, individual and business income tax, and sales tax.

USPS Postmark Changes May Affect 2026 Tax Filings

The Illinois Department of Revenue (IDOR) has issued a notice alerting taxpayers that changes to United States Postal Service (USPS) postmark procedures may impact tax filings in 2026. Taxpayers should be aware of these potential impacts when submitting their tax documents.