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Instructions for filing amended Form ST-1-X returns in Illinois for registered retailers who need to correct tax, E911 Surcharge, or ITAC Assessment amounts or request credits. It outlines the process for filing Form ST-1-X, completing Schedule B-X, and the consequences of failing to file. The document also includes instructions for specific lines on Form ST-1-X and Schedule A-X, as well as Schedule B-X.
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ST-1-X Instructions (R-06/17) Page 1 of 5
The period for which you can claim a credit for an overpayment of Sales and Use Tax, E911 Surcharge, or ITAC Assessment depends on when you file your Form ST-1-X. If you file this amended return between January 1 and June 30 of this year, you may file a claim for credit for the amounts you overpaid during the current year and previous 36 months. Beginning July 1, you may file a claim for the amounts you overpaid during the current year and previous 30 months. Note: We use the U.S. Postal Service postmark date as the filing date of a properly amended return (claim for credit). There is no deadline for making an additional payment; however, the longer you wait to pay, the more interest and, when applicable, penalty you will owe. For more information about penalties and interest, see Publication 103, Penalties and Interest for Illinois Taxes, which is available on our website at tax.illinois.gov.
Yes, you can use MyTax Illinois on our website at tax.illinois.gov to file your Form ST-1-X if you filed your original return for the same period through MyTax Illinois. MyTax Illinois also allows for electronic payment of any tax due.
If you need additional amended returns, visit our website at tax.illinois.gov.
Visit our website at tax.illinois.gov or call weekdays between 8 a.m. and 5 p.m. at 1 800 732‑8866 or 217 782‑ 3336. The number for our TDD (telecommunications device for the deaf) is 1 800 544‑5304. If you have a specific question about an amended return you have already filed, call us at 217 782‑ 5906.
Mail your completed return to ILLINOIS DEPARTMENT OF REVENUE PO BOX 19034 SPRINGFIELD IL 62794‑ 9034
You must file Form ST-1-X if you are a registered retailer who files Form ST-1, Sales and Use Tax and E911 Surcharge Return, and you need to
Page 2 of 5 ST-1-X Instructions (R-06/17)
Everyone must complete Steps 1, 2, 4, and 5. You must also complete Step 3 if you believe you have overpaid.
Enter your Illinois account ID and business name as they appear on your original Form ST-1. Also, enter the reporting period for which you are filing the amended return. For example, if you file Form ST-
Mark the reason that best explains why you are amending your Form ST-1. If you mark overpaid, you will need to complete Step 3.
Mark the reason(s) that best explains why you believe that your Form ST-1 is overpaid. If none of the reasons fit your situation, including changes to the E911 Surcharge or ITAC Assessment previously reported, please attach a letter to Form ST-1-X explaining why you believe you are overpaid. Line 1a: If you increase your resale exemptions, you must list all account ID numbers on Schedule RE, available on our website at tax.illinois.gov , and attach it to Form ST-1-X. Line 1c: If you increase your sales to exempt organizations, you must list all Illinois Tax Exemption (E) numbers on Schedule RE, available on our website, and attach it to Form ST-1-X. The organization’s Illinois Tax Exemption number must have been in effect on the day you made the sale. Line 8: Include only the locations on Form ST-2-X that need to be changed. For those locations with no changes, the most recent figures filed will be used. Line 9: Mark if you are a retailer who is exchanging Manufacturer’s Purchase Credit from a customer who previously paid cash. Line 10: Mark if you are exchanging Manufacturer’s Purchase Credit for cash previously paid on items for which you self-assessed use tax. Line 11: Mark the appropriate reason (a through d) if you self-assessed use tax on items that are not taxable.
Complete all applicable lines when making the corrections to the financial information on Form ST-1-X, ST-2-X, Schedule A-X, and Schedule B-X. If you do not complete all lines, we will use the most recent figures filed. For Form ST-2-X, you need to include only the locations that have a change. For those locations with no changes, the most recent figures filed will be used. Drop amounts of less than 50 cents, and increase amounts of 50 cents or more to the next higher dollar.
Line A and Lines 1 through 25: Complete all applicable lines. Enter the figures from your most recent filed return. These figures may be from your original Form ST-1 or from any corrections you have made since you filed your original Form ST-1. If you do not complete all lines, we will use the most recent figures filed when processing this Form ST-1-X.
Line A and Lines 1 through 25: Enter the corrected figures. If there is no change from Column A, enter the figures from Column A. Note: If you have an amount entered in Column A that you are reducing to zero, enter “0” in Column B. Leaving the line in Column B blank may delay the processing of your Form ST-1-X or your changes will not be accepted on your Form ST-1-X. Lines 26 through 28: Follow the detailed instructions listed below.
Line 2: Enter the correct amount of deductions on this line (from Schedule A-X, Line 29). Line 10: Complete this line only if you filed your original return and paid the tax owed by the due date. If you filed on time, figure your discount at the rate of 1.75 percent (.0175) of the amount you paid on time. If you are increasing the amount of tax due, you may not increase the amount of your discount unless the increased tax due was paid on or before the due date of the original return. If you are decreasing the amount of tax due, you will need to refigure the amount of discount to which you are entitled based on your new figures. Line 16a: Enter the correct amount of Manufacturer’s Purchase Credit (MPC) on this line. However, if you under-reported your MPC, you should claim the credit on a future return. Generally, you cannot claim MPC credit on Form ST‑1 for any reporting period after December 31, 2016. Line 17: If you did not attach a sufficient number of original Forms PST-2 to cover the amount claimed on your original return, you may attach them to this return to receive credit. If you did not take credit for prepaid sales tax on your original return and there are no other changes to that return, you should attach the original Forms PST-2 to any future Form ST-1 return to receive credit. Line 21: Enter the correct amount of E911 Surcharge and ITAC Assessment on this line (from Schedule B-X, Line 10). Line 24: If you have a credit memorandum or prior overpayment and you wish to use it towards what you owe, enter the amount you are using. Line 26: Enter the total amount you have paid. This figure includes the amount you paid with your original Form ST-1, any subsequent amended returns, and any other payments you have made for this reporting period. Be sure to reduce the total amount you have paid by any credit or refund of tax you have received for this reporting period. Specific Instructions
Line 14 ‑ Uncollectible debt on which tax was previously paid Enter amounts that have become worthless or uncollectible and on which tax previously has been paid. You must have charged off the uncollectible amounts as bad debt in your records in accordance with generally accepted accounting principles and have claimed the uncollectible amounts as a deduction pursuant to Section 166 of the Internal Revenue Code on your federal income tax return. Enter only the amount of uncollectible debt. Do not include the tax paid in this amount. Line 15 ‑ Sales of service Enter the correct total of any portion of all service transactions on which you did not charge your customers tax. Identify on the line provided the type of transaction that took place. Line 16 ‑ Other Identify other deductions. Enter the correct amount of sales of the deductions you listed. This amount can include:
ST-1-X Instructions (R-06/17) Page 5 of 5
Lines 1 through 10: Complete all applicable lines. Enter the figures from your most recent filed return. These figures may be from your original Schedule B or from any corrections you have made since you filed your original Schedule B. If you do not complete all lines, we will use the most recent figures filed when processing your Form ST-1-X and Schedule B-X.
Lines 1 through 10: Enter the corrected figures. If there is no change from Column A, enter the figures from Column A. Note: If you have an amount entered in Column A that you are reducing to zero, enter “0” in Column B. Leaving the line in Column B blank may delay the processing of your Form ST-1-X or your changes will not be accepted on your Form ST-1-X.
Line 1 ‑ Enter the correct amount of total receipts from retail transactions of prepaid wireless telecommunications service. Note: Do not complete Schedule B-X in the same manner that you complete Step 4 of Form ST-1-X. Instead Line 1 of Schedule B-X should only report your receipts subject to the E911 surcharge and ITAC Assessment, not all amounts collected for the reporting period. Do not include receipts from sales that are exempt from the E911 surcharge and ITAC Assessment. Also do not include the amount of surcharge and assessment you actually collected from your customers. Figure your breakdown of retail transactions for Chicago locations Locations within the city limits of Chicago are considered Chicago locations for purposes of E911 Surcharge and ITAC Assessment collections. Line 2a ‑ Enter the correct portion of Column B, Line 1 receipts that were collected from retail transactions of prepaid wireless telecommunications service at Chicago locations. Line 2b ‑ Multiply Line 2a by the combined E911 Surcharge and ITAC Assessment rate for Chicago locations. Note: The E911 rate for Chicago locations and the ITAC Assessment rate can be found in the Tax Rate Database on our website at tax.illinois.gov under “Other Miscellaneous Taxes, Fees, and Surcharges.” Line 3a ‑ Enter the correct portion of Column B, Line 1 receipts that were collected from retail transactions of prepaid wireless telecommunications service at Chicago locations at rates different from the Chicago locations included on Line 2a. This line will only be used if a rate change should occur and you are remitting E911 Surcharge and ITAC Assessment for receipts that were subject to the rate prior to the change. Line 3b ‑ Multiply Line 3a by the combined E911 Surcharge and ITAC Assessment rate. Figure your breakdown of retail transactions for non‑Chicago locations Line 5a ‑ Enter the correct portion of Column B, Line 1 receipts that were collected from retail transactions of prepaid wireless telecommunications service at non-Chicago locations. Line 5b ‑ Multiply Line 5a by the combined E911 Surcharge and ITAC Assessment rate for non-Chicago locations. Note: The E911 rate for non-Chicago locations and the ITAC Assessment rate can be found in the Tax Rate Database on our website at tax.illinois.gov under “Other Miscellaneous Taxes, Fees, and Surcharges.” Line 6a ‑ Enter the correct portion of Column B, Line 1 receipts that were collected from retail transactions of prepaid wireless telecommunications service at non-Chicago locations at rates different from the non-Chicago locations included on Line 5a. This line will only be used if a rate change should occur and you are remitting E911 Surcharge or ITAC Assessment for receipts that were subject to the rate prior to the change. Line 6b ‑ Multiply Line 6a by the combined E911 Surcharge and ITAC Assessment rate. Line 9 ‑ Complete this line only if you filed your original return and paid the E911 Surcharge and ITAC Assessment owed by the due date. If you filed your return on time, figure your discount by multiplying the amount you paid on time by the percentage printed in Line 9. If you are increasing the amount of E911 Surcharge and ITAC Assessment due, you may not increase the amount of your discount unless the increased E911 Surcharge and ITAC Assessment due was paid on or before the due date of the original return. If you are decreasing the amount of E911 Surcharge and ITAC Assessment due, you will need to refigure the amount of discount to which you are entitled based on your new figures. Line 10 ‑ Subtract Line 9 from Line 8 and enter this amount on Line 10 and on Step 4, Line 21 of Form ST-1-X.