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Illinois Department of Revenue Offers Guidance on Amending State Tax Returns
June 04, 2025
SPRINGFIELD, Illinois, June 4 -- The Illinois Department of Revenue issued the following news on June 3, 2025:

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Illinois Department of Revenue Offers Guidance on Amending State Tax Returns

CHICAGO - The Illinois Department of Revenue (IDOR) is reminding taxpayers that if they discover an error on a previously filed state income tax return--such as a miscalculation, a missed deduction, or unreported income--they are required to file an amended return to . . .

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