IL-1120-ST-X-V: Payment Voucher for Amended Small Business Corporation Replacement Tax (2024)
Illinois · Illinois DOR · Used for tax years 2024
Form IL-1120-ST-X-V is an Illinois payment voucher for amended Small Business Corporation Replacement Tax. It identifies the corporation, tax year ending, and payment amount to accompany a check or money order attached to the amended return.
Who files this form
Use Form IL-1120-ST-X-V when paying amended Small Business Corporation Replacement Tax by check or money order.
Do not file this voucher if no payment is due or if you pay electronically.
What you'll need
To complete and send the voucher, have:
- Your federal employer identification number (FEIN).
- Your name, C/O information if applicable, mailing address, and phone number.
- The month and year your tax year ends.
- The amount you are paying, in whole dollars.
- A check or money order for that amount.
- Your amended return, to which you will attach the completed voucher and payment.
How to file
- Enter your FEIN, name, C/O information if applicable, address, and phone number.
- Enter the month and year your tax year ends.
- Enter your payment amount in whole dollars only.
- Detach the voucher and enclose a check or money order payable to “Illinois Department of Revenue.” Write your FEIN, tax year ending, and “IL-1120-ST-X-V” on the payment.
- Attach the completed voucher and payment to your amended return and mail them to:
Illinois Department of Revenue
P.O. Box 19016
Springfield, IL 62794-9016
If you pay electronically, do not file this voucher. The form does not provide electronic payment instructions.
Common mistakes
- Filing the voucher when no payment is due or when paying electronically. The form says not to file it in either case.
- Including cents in the payment amount. Use whole dollars only.
- Leaving your FEIN, tax year ending, or “IL-1120-ST-X-V” off your check or money order.
- Making the payment payable to anyone other than “Illinois Department of Revenue.”
- Sending the voucher and payment without attaching them to your amended return.
Questions people ask
Do I file this voucher if I pay electronically?
No. The form says not to file the voucher if you make your payment electronically.
Do I need the voucher if no payment is due?
No. Do not file this form if no payment is due.
What should I write on my check or money order?
Write your FEIN, tax year ending, and “IL-1120-ST-X-V.” Make it payable to “Illinois Department of Revenue.”
Can I enter cents in the payment amount?
No. Enter the payment amount in whole dollars only.
Should I send the voucher with my amended return?
Yes. Attach the completed voucher and payment to your amended return and mail them to the address printed on the voucher.