St1 tax form 2026

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The document is the Illinois Department of Revenue's ST-1-X form, which is used for filing an amended Sales and Use Tax and E911 Surcharge Return. It provides instructions for businesses to report corrections to their tax filings, including steps for identifying the business, marking reasons for amendments, correcting financial information, and calculating any overpayments or underpayments. The form includes sections for detailing taxable receipts, deductions, and net tax due.

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Click ‘Get Form’ to open the ST-1-X in the editor.
Begin by identifying your business. Fill in your Account ID and Business Name, and specify the Reporting Period you are amending.
Mark the reason for filing an amended return in Step 2. Choose from options like Overpaid, Underpaid, or Corrections.
If you selected Overpaid, complete Step 3 by indicating why you believe you overpaid your return.
Proceed to Step 4 to correct your financial information. Enter figures in Column A for most recent filed amounts and Column B for corrected amounts.
Finally, sign the form in Step 5 under penalties of perjury, ensuring all information is accurate before submission.

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Versions	Form popularity	Fillable & printable
2024	4.7 Satisfied (40 Votes)
2021	4.8 Satisfied (79 Votes)
2019	4.2 Satisfied (93 Votes)
2018	4.2 Satisfied (96 Votes)
2017	4.3 Satisfied (159 Votes)
2011	4.3 Satisfied (307 Votes)

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St1 tax form 2026

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